Age Calculator
Calculate age in calendar years, months and days on a chosen date.
Inputs stay on your device; no account required.
Calendar calculation without time zones. Month-end anniversaries use the last valid day: a February 29 birthday reaches its anniversary on February 28 in non-leap years. Not a legal age determination.
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About this tool
Calculate age in calendar years, months and days on a chosen date. Calendar calculation without time zones. Month-end anniversaries use the last valid day: a February 29 birthday reaches its anniversary on February 28 in non-leap years. Not a legal age determination.
How to use
- Enter the birth date and the date on which to calculate age.
- Calculate and compare calendar years, months and days with the total day count.
Example
1988-01-15 to 2026-10-12 → 38 years, 8 months, 27 days.
Frequently asked questions
How are leap-day birthdays handled?
Calendar calculation without time zones. Month-end anniversaries use the last valid day: a February 29 birthday reaches its anniversary on February 28 in non-leap years. Not a legal age determination.
Do I need an account?
No. This free tool can be used without creating an account.
Where is my input processed?
This tool processes its input in your browser. Tool input is not uploaded for processing. General site usage statistics are separate; see the privacy policy.