Age Calculator
Find your exact age in years, months, days, weeks and hours. See when your next birthday is and how many days away it falls.
How to Use
- 1
Enter your date of birth
Pick your birth date from the date picker. Future dates are blocked.
- 2
Choose the "age at" date
Leave it as today, or change it to any past or future date to calculate age at a specific point.
- 3
View your exact age
See your age in years, months and days, plus totals for months, weeks, days and hours.
- 4
Check your next birthday
See the date of your next birthday and how many days away it is.
Frequently Asked Questions
Yes. Leap day birthdays are handled correctly. When the "age at" year is not a leap year, the birthday is considered to fall on 1 March for that year.
Yes — just change the "age at" field to any date you want.
Total hours is simply your age in days multiplied by 24. For someone 30 years old that's around 262,800 hours.
Yes. All calculations happen in your browser. Your date of birth is never sent to any server.
We use the date-fns library for precise difference calculations, handling leap years and varying month lengths correctly.