How is age calculated?

Age is calculated as the difference between your birth date and the target date, broken down into years, months, and days. The calculation accounts for varying month lengths and leap years.

Can I calculate age at a future date?

Yes. Enter a target date in the "Age at date" field to see how old you will be on that date. Leave it blank to use today's date.

How does the date difference calculator work?

Enter two dates and the tool shows the exact difference in years, months, days, total days, total weeks, and total months. The order of the dates does not matter.

Can I subtract days from a date?

Yes. In the Add/Subtract Days tab, enter a negative number to go backwards in time, or a positive number to go forward.

sigxlabs/Calculators

Age Calculator

Calculate exact age in years, months, and days. Also supports date difference and add/subtract days.

age calculator

how old am i

date difference calculator

days between dates

Date of birth

Age at date (optional)

How to use

1
Go to the Age tab
Enter your date of birth. Optionally, set a target date to calculate your age at a specific point in time.
2
Use Date Difference
Switch to the Date Difference tab to find the exact time between any two dates.
3
Add or subtract days
Use the Add/Subtract Days tab to calculate a future or past date by entering a number of days (use negative for subtraction).
4
Review results
All results show years, months, days, and total time in various units.

FAQ

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