🎂 Age Calculator
Enter your date of birth below to get your exact age — not just years, but the full breakdown down to the second. This calculator also shows your next birthday countdown, the day of the week you were born, your zodiac sign, birthstone, generation, and your birth date converted to the Afghan Hijri Shamsi calendar.
How the Age Calculator works
The calculator takes the difference between your date of birth and today's date (or any date you choose), correctly accounting for leap years and the varying number of days in each month — so 'years, months, and days' always adds up exactly right, not just an approximation.
Step-by-step calculation
- 1Enter your date of birth.
- 2Optionally choose another "as of" date instead of today.
- 3Count full years, then full months, then the remaining days.
- 4Read your age, next birthday and extra facts.
Worked example
Born March 15, 1990: on November 14, 2026 you are 36 years, 7 months and 30 days old.
Age Calculator examples
| Date of birth | You are |
|---|---|
| May 10, 1960 | 65 years, 7 months, 22 days old |
| May 10, 1975 | 50 years, 7 months, 22 days old |
| May 10, 1990 | 35 years, 7 months, 22 days old |
| May 10, 2000 | 25 years, 7 months, 22 days old |
| May 10, 2015 | 10 years, 7 months, 22 days old |
Age on January 1, 2026. Other inputs kept at the calculator's default values. Results calculated by this calculator.
Why use an Age Calculator?
Get your exact age for forms, applications, milestones or just curiosity — without counting months by hand.
Important factors that can affect your results
- Leap years and February 29 birthdays.
- Which date you count "as of" (today or another date).
- Time zone near midnight can shift the date by one day.
Frequently asked questions
Is my date of birth stored anywhere?
No. The calculation runs entirely in your browser's own JavaScript. Nothing is sent to a server, logged, or saved.
How accurate is the leap year handling?
Fully accurate — the calculator applies the standard Gregorian leap year rule (divisible by 4, except century years unless also divisible by 400) automatically.
Can I calculate my age as of a future or past date instead of today?
Yes — use the optional "Calculate as of" field, or try the dedicated Age on Any Date calculator for a cleaner future/past view.
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Last reviewed November 2026 · How we build and check our tools · Report a problem