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Age Calculator
Enter your date of birth to instantly see your exact age in years, months, and days — plus a countdown to your next birthday.
How it works
- Pick your date of birth using the date picker
- Click "Calculate age" to see your exact age breakdown
- View your age in years, months, and days using exact calendar math
- See how many days remain until your next birthday and what age you'll be turning
Frequently asked questions
How accurate is the age calculator?
It uses exact calendar math, not 30-day month approximations, and handles leap years automatically — so the years, months, and days are precise.
Does it handle leap years?
Yes — leap years are taken into account in every calculation, including total days lived and the countdown to your next birthday.
What does "total days lived" mean?
It's the exact number of calendar days that have passed between your birth date and today.
Is my date of birth stored anywhere?
No. The entire calculation runs in your browser. Nothing is sent to a server or saved.
Can I calculate someone else's age?
Of course — just enter their date of birth instead of yours.
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