Free Cash Flow Calculator

Free Cash Flow (FCF) starts with the cash generated from core business operations and subtracts capital expenditures (CapEx)—the money spent to maintain or expand physical assets like property, plants, and equipment. The primary formula is expressed as:

Free Cash Flow = Operating Cash Flow - Capital Expenditures

Beyond absolute cash flow, this calculator also determines critical derived metrics: Free Cash Flow per Share (FCF divided by total outstanding shares), Free Cash Flow Yield (FCF per share divided by the current stock price, or total FCF divided by market capitalization), and the Free Cash Flow Margin (FCF divided by total revenue), which highlights operational efficiency.

Imagine you are analyzing a manufacturing firm with the following financial figures: Operating Cash Flow of $1,500,000, Capital Expenditures of $400,000, Total Revenue of $5,000,000, 1,000,000 shares outstanding, and a current stock price of $20.00.

First, compute the Free Cash Flow: $1,500,000 (Operating Cash Flow) minus $400,000 (CapEx) equals $1,100,000. Next, find the FCF per share by dividing $1,100,000 by 1,000,000 shares, resulting in $1.10 per share. To find the FCF yield, divide the $1.10 per share by the $20.00 stock price, giving a 5.5% yield. Finally, divide the $1,100,000 FCF by the $5,000,000 revenue to arrive at a healthy 22% Free Cash Flow Margin.

When reviewing free cash flow, always examine trends over multiple periods rather than relying on a single quarter, as seasonal investments can temporarily skew capital expenditures. Keep in mind that negative FCF is not always a red flag if the company is aggressively reinvesting in high-ROI growth projects, but it does require closer scrutiny of cash burn rates. Finally, compare the FCF yield against prevailing risk-free interest rates to determine whether the stock offers adequate compensation for equity risk.