Age Calculator
Calculate your exact age in years, months and days from a date of birth, plus total weeks and days and your next birthday. Private and instant.
26 years 5 months 19 days
About this tool
Enter a date of birth (and optionally an "age at" date) to get an exact age broken down into years, months and days, along with handy totals such as the number of weeks and days you have been alive.
The calculator uses calendar-aware math, correctly accounting for varying month lengths and leap years.
Examples
- Born 1990-06-15, today 2026-06-19 → 36 years, 0 months, 4 days
- Total days lived is shown alongside total weeks and months
- Your next birthday and days remaining are displayed automatically
Frequently asked questions
How is age calculated exactly?
We compare the day, month and year of both dates and borrow from months and years where needed, just like counting on a calendar. Leap years and different month lengths are handled automatically.
Can I calculate age on a past or future date?
Yes. Change the "age at" date to any date to see how old someone was or will be then.
Is my date of birth stored?
No. The calculation happens in your browser and nothing is saved or transmitted.
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