Age Calculator

Calculate exact calendar age in years, months, and days, plus total elapsed days and weeks.

Privacy: Calculations and drafts stay on this device unless you explicitly enable account sync.

Date of birth

Date-only calendar arithmetic avoids timezone shifts and handles leap years.

Birth date

Calculate age on

Exact age

Choose a birth date to calculate the exact age.

Support

What this tool does

Calculate elapsed calendar age between two dates.

How to use it

Enter birth date and a comparison date, then read years, months, days and total elapsed days.

Worked example

2000-01-01 to 2026-01-01 is 26 years, 0 months and 0 days.

Limitations and checks

End-of-month and leap-day anniversaries are clamped to valid calendar dates. This is a calendar calculation, not a jurisdiction-specific legal age determination.

How your data is processed

The operation runs in your browser. Copy and download actions use your device. Where Save work is offered, a local copy is stored; eligible work can sync only under your enabled account settings. See Privacy for site analytics and storage details.

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