Age Calculator
Calculate exact age in years, months and days — plus total weeks, days, hours and minutes.
Quick answer: Calculate exact age in years, months and days — plus total weeks, days, hours and minutes.
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Frequently asked questions
- How is age computed when birthday hasn't happened yet this year?
- The same way we informally count age — your birthday this year hasn't yet rolled over, so you're still the previous age. The number of months and days fills in the rest.
- What about leap years?
- Leap years are handled correctly. February 29 birthdays default to celebrating on Feb 28 in non-leap years for the 'next birthday' calculation.
- Can I calculate age on a future date?
- Yes — change the 'calculate age on' field to any date in the future. Useful for figuring out how old someone will be at an event.
- Are dates uploaded anywhere?
- No — every calculation runs in your browser. Nothing leaves your device.
- Does it work across timezones?
- Calculations use the browser's local timezone, which is what you want for a birthday calculation. The result is the same regardless of the time of day.