Age Calculator
Find out your exact age in years, months, and days from your date of birth, plus how many days until your next birthday.
Defaults to today.
How to use Age Calculator
- Pick your date of birth.
- Optionally set an 'as of' date (defaults to today).
- Click Calculate to see your exact age and days until your next birthday.
Frequently Asked Questions
How does the age calculator work?
It compares your date of birth with the 'as of' date and computes the exact number of years, months, and days between them, counting leap years correctly.
How old will I be on a specific date?
Use the optional 'Age as of' field: pick any future or past date and the calculator will compute your age at exactly that date.
How many days until my next birthday?
The calculator shows the date of your next birthday and the number of days remaining, based on the current date.
Is my birth date safe?
Yes. All calculations happen locally in your browser. Your date of birth is never sent to any server or stored anywhere.
Can I calculate someone else's age?
Yes, simply enter another person's date of birth in the calculator.