Age in Years, Months, and Days Calculator

To calculate someone's age in years, months, and days:

1. Find the differences between the person's birth year/month/day and the current year/month/day:
   • years = birth_year - current_year;
   • months = birth_month - current_month; and
   • day = birth_day - current_day.
2. Replace them in the following formula: age = (years × 365) + (months × 31) + days.
3. Divide the result by years from step 1 and truncate it to get the age in years.
4. Multiply the remainder of step 3 by 12 and truncate it to get the months.
5. Multiply this last remainder by 31 to get the days.

🙋 This result is an approximation since not every month or year has 31 or 365 days, respectively. Use our age in years, months, and days calculator to get the exact result!

With our age in years, months, and days calculator, you can also find a person's age on dates other than the present time 👶👩🧓.

For example, if we wanted to find how old a celebrity was at the time of their passing, we can input the person's birth date into the calculator and their decease date in the "Current date" field.

Our calculator will then output the exact amount of years, months, and days that the person lived throughout their entire life!

Similarly, we can input a future date ⌚ to find how old will you or someone else's be at that time.

Feel free to check any of our other age calculators 📅!

• Chronological age calculator;
• Age in weeks calculator;
• Age in months calculator;
• Age in years calculator;
• Age in days calculator;
• Age in hours calculator;
• Age in minutes calculator;
• Age in seconds calculator; and
• Days old calculator.