Age Calculator
Find your exact age in years, months, days — and much more.
Find your exact age in years, months, days — and much more.
Our Age calculator is designed to be fast, accurate, and easy to use. Follow these steps:
An age calculator measures the exact difference between two dates. The calculation isn't as simple as subtracting years — it must account for varying month lengths (28, 29, 30, or 31 days) and leap years. Our tool uses a precise algorithm that:
All computation happens locally in your browser using JavaScript — no data is ever sent to a server.
Here are some common scenarios to show you how the calculator works:
Born
January 1, 2000
Age in 2026
26 years old
Born
February 29, 2000
Leap year birthday
Handled correctly
Born
December 31, 1999
Age in days (approx)
~9,703 days old
There are dozens of age calculators online, but here's what makes ours different:
An age calculator is an online tool that computes your exact age from your date of birth up to today or any target date — giving results in years, months, days, hours, minutes, and seconds.
Very accurate. It accounts for leap years, varying month lengths, and calculates the precise difference between two dates down to the second.
Yes. Simply enter their date of birth. If you want to calculate a historical figure's lifespan, enter the date they passed away as the target date.
Yes. The calculator correctly handles February 29 leap year birthdays. In non-leap years, the birthday is treated as March 1 for countdown purposes.
No. Our age calculator runs entirely in your browser using JavaScript. Your birth date never leaves your device and is never sent to any server.
The zodiac sign is determined by your birth month and day using the standard Western astrology date ranges (e.g., Aries: March 21 – April 19, Taurus: April 20 – May 20, etc.).
It shows exactly how many days remain from today until your next birthday. If today is your birthday, it shows 0 days — happy birthday! 🎂
Yes, completely free. No sign-up, no account, no hidden fees. Use it as many times as you like on any device.
EverydayTools.tech is committed to your privacy. This age calculator is a client-side tool — all computations happen directly in your web browser. We do not collect, store, or transmit your date of birth or any personal data. The only data we collect is standard anonymous website analytics (page views, device type) through Google Analytics, as described in our Privacy Policy.