How is age calculated?

The tool compares the birth date with the target date and returns complete years, remaining months, remaining days, and total calendar days.

Can I calculate age on a future or past date?

Yes. Change the target date to calculate age on any date after the birth date.

How are February 29 birthdays handled?

For birthday countdowns in non-leap years, February 29 is treated as February 28.

Is my birth date stored?

No. The calculation runs in your browser and is cleared when you leave or refresh the page.

Age Calculator - Calculate Age by Birth Date

Age Calculator

Calculate age by birth date, target date, exact years, months, days, total days, and next birthday countdown.

Birth date

Age on date

Years

Months

Days

Total days

9,131

Next birthday

Next birthday: 2026-05-24

Countdown

0days

Calculated from 2001-05-24 to 2026-05-24.

Calculate age from a date of birth

Use this age calculator to find exact age from a birth date to today or any target date. It shows years, months, days, total days lived, and the next birthday countdown.

Common age calculator use cases

Check exact age and days until the next birthday.
Fill forms that ask for age on a specific date.
Compare dates for records, school years, or membership age.
Plan milestones by calculating age on a future date.

Related tools

Date Calculator Unit Converter

Age Calculator FAQ

How is age calculated?: The tool compares the birth date with the target date and returns complete years, remaining months, remaining days, and total calendar days.
Can I calculate age on a future or past date?: Yes. Change the target date to calculate age on any date after the birth date.
How are February 29 birthdays handled?: For birthday countdowns in non-leap years, February 29 is treated as February 28.
Is my birth date stored?: No. The calculation runs in your browser and is cleared when you leave or refresh the page.