Construction
151 tools available
Created by Kaushik Rabadiya
Construction Calculators: Construction calculators instantly estimate material quantities, dimensions, and costs for concrete, roofing, framing, and flooring projects.
Who it's for: Designed for contractors, DIY home improvers, and builders who need to plan material purchases accurately and avoid waste.
Explore Construction Calculators
AC tonnage
Instantly calculate ac tonnage using manualjcalculatedbtu, manualjcalculation, ceilingheight. Free, accurate construction calculator with real-world examples.
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Air changes per hour
Instantly calculate air changes per hour using air changes per hour, airflow cubic feet, area. Free, accurate construction calculator with real-world examples.
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Air conditioner BTU
Instantly calculate air conditioner btu using additionalpeople, calculatoroptions, ceilingheight. Free, accurate construction calculator with real-world example
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Aluminum weight
Instantly calculate aluminum weight using baseheight, density, height. Free, accurate construction calculator with real-world examples.
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Angle cut
Instantly calculate angle cut using along, aplank, ashort. Free, accurate construction calculator with real-world examples.
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Angle of depression
Instantly calculate angle of depression using angleofdepression, horizontaldistance, verticaldistance. Free, accurate construction calculator with real-world ex
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Asphalt
Instantly calculate asphalt using area, costperweight, density. Free, accurate construction calculator with real-world examples.
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Baluster
Instantly calculate baluster using baluster width, balusters needed, post number. Free, accurate construction calculator with real-world examples.
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Beam deflection
Instantly calculate beam deflection using ssmax, ssmid, areamomentofinertia. Free, accurate construction calculator with real-world examples.
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Beam load
Instantly calculate beam load using a1, a10, a2. Free, accurate construction calculator with real-world examples.
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Bending stress
Instantly calculate bending stress using i beam ix, i beam sx, i beam section bendingstress. Free, accurate construction calculator with real-world examples.
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Birdsmouth cut
Instantly calculate birdsmouth cut using building width, heel cut, height above plate. Free, accurate construction calculator with real-world examples.
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Board and batten
Instantly calculate board and batten using battenmaterial, battens, boardmaterial. Free, accurate construction calculator with real-world examples.
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Board foot
Instantly calculate board foot using board foot, length, no of pieces. Free, accurate construction calculator with real-world examples.
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Board on board fence
Instantly calculate board on board fence using fence height, fence length, number of pickets. Free, accurate construction calculator with real-world examples.
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Boiler size
Instantly calculate boiler size using age, bedroombaths, bedrooms. Free, accurate construction calculator with real-world examples.
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Bolt circle
Instantly calculate bolt circle using a, n, offsetx. Free, accurate construction calculator with real-world examples.
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Bolt torque
Instantly calculate bolt torque using boltmaterial, bolt dia, clamplingforce. Free, accurate construction calculator with real-world examples.
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Bowl segment
Instantly calculate bowl segment using cutting angle, inner diameter, inner fudge factor. Free, accurate construction calculator with real-world examples.
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Box fill
Instantly calculate box fill using aclamps, adevice, aground. Free, accurate construction calculator with real-world examples.
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Brick
Instantly calculate brick using bag weight, bags needed, brick height. Free, accurate construction calculator with real-world examples.
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Carbon equivalent
Instantly calculate carbon equivalent using b, c, ce aws. Free, accurate construction calculator with real-world examples.
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Carpet (rug)
Instantly calculate carpet (rug) using areacirc, areaeli, areahex. Free, accurate construction calculator with real-world examples.
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Cement
Instantly calculate cement using a, b, bag weight. Free, accurate construction calculator with real-world examples.
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CFM
Instantly calculate cfm using ach, airflow, area. Free, accurate construction calculator with real-world examples.
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Chicken coop size
Instantly calculate chicken coop size using area per 1 bantam, area per 1 regular, quantity bantam. Free, accurate construction calculator with real-world examp
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Clearance hole
Instantly calculate clearance hole using clearancehole, diameter, diameterhead. Free, accurate construction calculator with real-world examples.
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Concrete
Instantly calculate concrete using area, bag weight, bags. Free, accurate construction calculator with real-world examples.
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Concrete - column
Instantly calculate concrete - column using bag weight, bags, cement1. Free, accurate construction calculator with real-world examples.
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Concrete - tube
Instantly calculate concrete - tube using bag weight, bags, density. Free, accurate construction calculator with real-world examples.
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Concrete block
Instantly calculate concrete block using blockheight, blockprice, blockpricecustom. Free, accurate construction calculator with real-world examples.
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Concrete block fill
Instantly calculate concrete block fill using blockheight, blockthickness, blockwidth. Free, accurate construction calculator with real-world examples.
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Concrete cylinder
Instantly calculate concrete cylinder using bag weight, bags, cement1. Free, accurate construction calculator with real-world examples.
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Concrete driveway cost
Instantly calculate concrete driveway cost using concretecost, concreteprice, concretetotal. Free, accurate construction calculator with real-world examples.
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Concrete stairs
Instantly calculate concrete stairs using area carriage, area nosing, area step. Free, accurate construction calculator with real-world examples.
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Concrete weight
Instantly calculate concrete weight using concrete, density, volume. Free, accurate construction calculator with real-world examples.
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Countersink depth
Instantly calculate countersink depth using angle, depth, diameter. Free, accurate construction calculator with real-world examples.
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Crushed stone
Instantly calculate crushed stone using ccrushedstone, cextra, cstone. Free, accurate construction calculator with real-world examples.
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Cubic yard
Instantly calculate cubic yard using area 8, area 9, b width 4. Free, accurate construction calculator with real-world examples.
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Deck stain
Instantly calculate deck stain using amount stain, amount stain baluster, amount stain baluster metric. Free, accurate construction calculator with real-world e
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Decking
Instantly calculate decking using board length, board list, board size. Free, accurate construction calculator with real-world examples.
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DIY shed cost
Instantly calculate diy shed cost using costroof, costslab, costwall. Free, accurate construction calculator with real-world examples.
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Door header size
Instantly calculate door header size using headersizes, maximumheaderspan, options. Free, accurate construction calculator with real-world examples.
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Drywall
Instantly calculate drywall using amount of drywall, amount of drywall eu, area of drywall panel. Free, accurate construction calculator with real-world example
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Elevation grade
Instantly calculate elevation grade using gradeangle, gradebasic, gradepercentage. Free, accurate construction calculator with real-world examples.
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Epoxy
Instantly calculate epoxy using circle volume, coating, diameter. Free, accurate construction calculator with real-world examples.
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Fence
Instantly calculate fence using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world examples
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Fence cost
Instantly calculate fence cost using concrete cost, concrete for cuboid post, concrete for round post. Free, accurate construction calculator with real-world ex
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Fence estimate
Instantly calculate fence estimate using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world
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Fence material
Instantly calculate fence material using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world
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Fence perimeter
Instantly calculate fence perimeter using area, gate opening, if gate. Free, accurate construction calculator with real-world examples.
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Fence picket
Instantly calculate fence picket using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world e
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Fence post depth
Instantly calculate fence post depth using depth, height, ratio. Free, accurate construction calculator with real-world examples.
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Fire flow
Instantly calculate fire flow using exterior exposures, floors, height v. Free, accurate construction calculator with real-world examples.
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Fire glass
Instantly calculate fire glass using areacircular, arearectangular, areasquare. Free, accurate construction calculator with real-world examples.
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Floor area ratio
Instantly calculate floor area ratio using builtuparea, ctb, carpetarea. Free, accurate construction calculator with real-world examples.
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Floor joist
Instantly calculate floor joist using a, b, c. Free, accurate construction calculator with real-world examples.
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Flooring
Instantly calculate flooring using area, cost per area, length. Free, accurate construction calculator with real-world examples.
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Framing
Instantly calculate framing using percent, price, spacing. Free, accurate construction calculator with real-world examples.
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French drain
Instantly calculate french drain using density, displaygraveldensityandweight, drainpipe. Free, accurate construction calculator with real-world examples.
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Furnace size
Instantly calculate furnace size using area, avetemp, avetempperzone. Free, accurate construction calculator with real-world examples.
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Gallons per minute
Instantly calculate gallons per minute using gpm, time, volume. Free, accurate construction calculator with real-world examples.
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Gallons per square foot
Instantly calculate gallons per square foot using g sft, height, length. Free, accurate construction calculator with real-world examples.
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Gambrel roof
Instantly calculate gambrel roof using anglealpha, anglebeta, anglegamma. Free, accurate construction calculator with real-world examples.
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Glass weight
Instantly calculate glass weight using area, areacircular, areaellipse. Free, accurate construction calculator with real-world examples.
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Gravel
Instantly calculate gravel using area, density, depth. Free, accurate construction calculator with real-world examples.
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Gravel driveway
Instantly calculate gravel driveway using density, depth, gravelcost. Free, accurate construction calculator with real-world examples.
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Grout
Instantly calculate grout using area, arealength, areawidth. Free, accurate construction calculator with real-world examples.
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Heat loss
Instantly calculate heat loss using heat loss, height, insulation. Free, accurate construction calculator with real-world examples.
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Hole volume
Instantly calculate hole volume using diameter, concrete volume cylinder, concrete volume rectangle. Free, accurate construction calculator with real-world exam
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Hoop house
Instantly calculate hoop house using greenhouse type, archheight archedroof, bowlength archedroof. Free, accurate construction calculator with real-world exampl
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Insulation
Instantly calculate insulation using m0, m1, m10. Free, accurate construction calculator with real-world examples.
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Junction box sizing
Instantly calculate junction box sizing using b1, b2, b3. Free, accurate construction calculator with real-world examples.
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K-factor
Instantly calculate k-factor using bend allowance, bend angle, inside radius. Free, accurate construction calculator with real-world examples.
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Ladder angle
Instantly calculate ladder angle using ladder angle, ladder bottom, ladder length. Free, accurate construction calculator with real-world examples.
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Limestone
Instantly calculate limestone using area, density, depth. Free, accurate construction calculator with real-world examples.
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Liters per minute
Instantly calculate liters per minute using angle, areacircle, bigcrosssectionalarea notfullpipe. Free, accurate construction calculator with real-world example
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Log weight
Instantly calculate log weight using angle, boardthickness, boardvolume. Free, accurate construction calculator with real-world examples.
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Lumber
Instantly calculate lumber using length, price, quantity. Free, accurate construction calculator with real-world examples.
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Lumber weight
Instantly calculate lumber weight using density, long, quantity. Free, accurate construction calculator with real-world examples.
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Material removal rate
Instantly calculate material removal rate using cutting speed drilling, cutting speed grooving, cutting speed turning. Free, accurate construction calculator wi
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Metal roof cost
Instantly calculate metal roof cost using cost, cost 2, est area. Free, accurate construction calculator with real-world examples.
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Metal weight
Instantly calculate metal weight using alloydensity, alloyoption, baseheight. Free, accurate construction calculator with real-world examples.
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Miter angle
Instantly calculate miter angle using miterangle a and b same width, miterangle a and b same width print, miterangle of a a is wider. Free, accurate constructio
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Mortar
Instantly calculate mortar using bagweight, blocks, bricks. Free, accurate construction calculator with real-world examples.
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Paint
Instantly calculate paint using amount of paint, cost per unit, door height. Free, accurate construction calculator with real-world examples.
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Paver
Instantly calculate paver using area shape, brick l, brick size. Free, accurate construction calculator with real-world examples.
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Paver sand
Instantly calculate paver sand using area, density, depth. Free, accurate construction calculator with real-world examples.
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Pipe volume
Instantly calculate pipe volume using density, diameter, length. Free, accurate construction calculator with real-world examples.
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Pipe weight
Instantly calculate pipe weight using density, innerdiameter, length. Free, accurate construction calculator with real-world examples.
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Pitch diameter
Instantly calculate pitch diameter using td2temp, td2temp, basic major diameter external. Free, accurate construction calculator with real-world examples.
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Plate weight
Instantly calculate plate weight using shape, area, areacircular. Free, accurate construction calculator with real-world examples.
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Plywood
Instantly calculate plywood using area, length, plywoodarea. Free, accurate construction calculator with real-world examples.
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Pond
Instantly calculate pond using depth, diameter, edgingwidth. Free, accurate construction calculator with real-world examples.
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Pool volume
Instantly calculate pool volume using depth1, depth2, length. Free, accurate construction calculator with real-world examples.
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Post hole concrete
Instantly calculate post hole concrete using concrete for cuboid post, concrete for round post, number of posts. Free, accurate construction calculator with rea
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Privacy fence
Instantly calculate privacy fence using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world
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Punch force
Instantly calculate punch force using material, perimeter, strength. Free, accurate construction calculator with real-world examples.
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Rafter length
Instantly calculate rafter length using angle, calculate, duration. Free, accurate construction calculator with real-world examples.
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Ramp
Instantly calculate ramp using ada standards check, application selection, cm 1525. Free, accurate construction calculator with real-world examples.
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Rebar
Instantly calculate rebar using edgespacing, gridlength, gridwidth. Free, accurate construction calculator with real-world examples.
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Retaining wall
Instantly calculate retaining wall using backfill, backfillheight, backfilllength. Free, accurate construction calculator with real-world examples.
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Rip rap
Instantly calculate rip rap using isbashconstant, area, averagerockdiameter. Free, accurate construction calculator with real-world examples.
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River rock
Instantly calculate river rock using area, density, depth. Free, accurate construction calculator with real-world examples.
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Rivet size
Instantly calculate rivet size using d, dtrigger, allowance. Free, accurate construction calculator with real-world examples.
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Rolling offset
Instantly calculate rolling offset using angle, fittingangle, horizontaloffset. Free, accurate construction calculator with real-world examples.
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Roof pitch
Instantly calculate roof pitch using angle, pitch, pitch2. Free, accurate construction calculator with real-world examples.
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Roof shingle
Instantly calculate roof shingle using bundlesize, coverage per bundle, footprintarea. Free, accurate construction calculator with real-world examples.
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Roof truss
Instantly calculate roof truss using angle, calculate, duration. Free, accurate construction calculator with real-world examples.
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Roofing
Instantly calculate roofing using house base area, house length, house width. Free, accurate construction calculator with real-world examples.
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Round pen
Instantly calculate round pen using circumference, diameter, length. Free, accurate construction calculator with real-world examples.
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SAG
Instantly calculate sag using diameter, radius, sag. Free, accurate construction calculator with real-world examples.
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Sand
Instantly calculate sand using area, density, depth. Free, accurate construction calculator with real-world examples.
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Sealant
Instantly calculate sealant using actualvolumeneeded, depth, length. Free, accurate construction calculator with real-world examples.
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Shiplap
Instantly calculate shiplap using are there doors, are there windows, area shape. Free, accurate construction calculator with real-world examples.
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Siding
Instantly calculate siding using door area, door height, door width. Free, accurate construction calculator with real-world examples.
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Size to weight (rectangular box)
Instantly calculate size to weight (rectangular box) using density, height, length. Free, accurate construction calculator with real-world examples.
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Snow load
Instantly calculate snow load using alaska ground snow load, alberta, britcol. Free, accurate construction calculator with real-world examples.
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Sonotube
Instantly calculate sonotube using ratiomultiplierforgravel, ratiomultiplierforsand, bagsize. Free, accurate construction calculator with real-world examples.
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Spindle spacing
Instantly calculate spindle spacing using calculatoroptions, endspaceslanted centered, endspace centered. Free, accurate construction calculator with real-world
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Spindle speed
Instantly calculate spindle speed using cutting speed, diameter of part, feed per tooth. Free, accurate construction calculator with real-world examples.
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Spiral staircase
Instantly calculate spiral staircase using actualriserrise, angleofrotation, handraillength. Free, accurate construction calculator with real-world examples.
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Square feet to cubic yards
Instantly calculate square feet to cubic yards using area, height, volume. Free, accurate construction calculator with real-world examples.
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Square footage
Instantly calculate square footage using area rec, length, quantity. Free, accurate construction calculator with real-world examples.
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Square meter
Instantly calculate square meter using shape, diameter, radius. Free, accurate construction calculator with real-world examples.
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Square yard
Instantly calculate square yard using unitarealaborcost, unitareamaterialprice, unitborderlaborcost. Free, accurate construction calculator with real-world exam
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Square yards
Instantly calculate square yards using cost, length, price. Free, accurate construction calculator with real-world examples.
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Stair carpet
Instantly calculate stair carpet using carpetarea nonosingoverhang, carpetarea withnosingoverhang, carpetcost nonosingoverhang. Free, accurate construction calc
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Stairs
Instantly calculate stairs using angle, angle2, angle3. Free, accurate construction calculator with real-world examples.
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Steel plate weight
Instantly calculate steel plate weight using area, areacircular, arearectangular. Free, accurate construction calculator with real-world examples.
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Steel weight
Instantly calculate steel weight using areahexbar, areapipe, arearectangularbar. Free, accurate construction calculator with real-world examples.
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Stone
Instantly calculate stone using area circular, area rectagular, cost circular. Free, accurate construction calculator with real-world examples.
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Tank volume
Instantly calculate tank volume using alpha, capsule h, capsule h filled. Free, accurate construction calculator with real-world examples.
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Taper
Instantly calculate taper using dial, dias, length. Free, accurate construction calculator with real-world examples.
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Thinset
Instantly calculate thinset using advancedmode, area, arealength. Free, accurate construction calculator with real-world examples.
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Thread
Instantly calculate thread using cmax, d1maxint, d1minint. Free, accurate construction calculator with real-world examples.
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Thread pitch
Instantly calculate thread pitch using pitch, threadlength, threadsperinch. Free, accurate construction calculator with real-world examples.
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Tile
Instantly calculate tile using advancedmode, area, area length. Free, accurate construction calculator with real-world examples.
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Tonnage
Instantly calculate tonnage using area, density, depth. Free, accurate construction calculator with real-world examples.
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True position
Instantly calculate true position using feature type, material condition, measured x. Free, accurate construction calculator with real-world examples.
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Trump's Wall
Instantly calculate trump's wall using advanced mode, annual cost of guards, assembly cost per element. Free, accurate construction calculator with real-world e
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Vertical curve
Instantly calculate vertical curve using curve length, custom distance, custom elevation. Free, accurate construction calculator with real-world examples.
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Vinyl fence
Instantly calculate vinyl fence using columnwidth, columns, fenceheight. Free, accurate construction calculator with real-world examples.
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Vinyl fence cost
Instantly calculate vinyl fence cost using columnprice, columnwidth, columns. Free, accurate construction calculator with real-world examples.
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Vinyl siding
Instantly calculate vinyl siding using area, door height, door number. Free, accurate construction calculator with real-world examples.
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Wainscoting
Instantly calculate wainscoting using basedepth, bottommargin, capdepth. Free, accurate construction calculator with real-world examples.
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Wall square footage
Instantly calculate wall square footage using ceilingheight, choice, doors. Free, accurate construction calculator with real-world examples.
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Wallpaper
Instantly calculate wallpaper using adjusted height, adjusted height2, cost per unit. Free, accurate construction calculator with real-world examples.
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Welding
Instantly calculate welding using length, length1, length2. Free, accurate construction calculator with real-world examples.
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Wood beam span
Instantly calculate wood beam span using a, b, c. Free, accurate construction calculator with real-world examples.
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Wood fence
Instantly calculate wood fence using concrete for cuboid post, concrete for round post, fence height. Free, accurate construction calculator with real-world exa
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FAQs
Do construction calculators account for waste or offcuts?
Many of our construction tools include an optional 'waste percentage' field (typically 5-10%) so you can accurately order enough material for the job.
Are these estimates suitable for professional bidding?
They provide an excellent baseline for estimating quantities, though professionals should always verify final numbers against site-specific conditions and local building codes.
Information on this page is informed by ACI/ASTM engineering standards.