Age Calculator

Calculate exact age in years, months and days from a date of birth, plus total days and days until the next birthday.

Age
31 years, 4 months, 30 days
Total months
376
Total weeks
1,639
Total days
11,475
Days until next birthday
213

Formula

Age is counted in whole calendar years, then whole months, then remaining days between the two dates.

About this calculator

Useful for forms, exam and job eligibility cut-off dates, and visa applications. Change the second date to find the age on any past or future day.

Amounts are shown without a currency symbol, so the calculator works for any currency: enter all values in the same one.

Frequently asked questions

How are leap-year birthdays handled?

The calculation uses real calendar months, so 29 February is handled correctly and February counts as 28 or 29 days as appropriate.

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