Age Calculator
Calculate your exact age instantly — in years, months, weeks, days, hours, minutes and seconds, plus your next birthday countdown, zodiac signs and life progress.
Quick examples
How this calculator works
Everything runs locally in your browser — no dates are uploaded anywhere.
- Step 1
Pick your date of birth
Choose the exact day you were born. You can optionally set an 'Age at date' to check your age on any past or future date.
- Step 2
We compare calendar dates
Years, months and days are subtracted calendar-style with borrowing, so real month lengths and leap days are respected — never a flat 365-day year.
- Step 3
Extras get derived
Totals, next birthday countdown, zodiac signs, leap-year facts, decimal age and life progress are calculated from the same exact difference.
Frequently asked questions
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