Age Calculator
Calculate your exact age in years, months, and days from your date of birth. You can also calculate age at any specific date in the past or future.
Formula reviewed for accuracy. Our methodology & sources
Age Calculator
date calculator
How It Works
The calculator compares your date of birth with today (or any date you choose) and counts the whole years, months, and days between them, borrowing days from the previous month when needed so the breakdown is always accurate. It also totals the elapsed time in months and days for quick reference, and works out how many days remain until your next birthday. Because it uses the real length of each month, leap years and varying month lengths are handled automatically.
Examples
Born January 1, 1990
Age on January 1, 2025.
Frequently Asked Questions
How is age calculated?
Age is calculated by counting the number of full years, months, and days that have passed since your date of birth up to today or a target date.
Can I calculate age on a future date?
Yes! Enter any future date as the "Age at Date" field to see how old you (or someone else) will be on that date.
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