Age Calculator
Enter your date of birth to see your exact age in years, months, and days.
Related Guide
How to Calculate Age Online from a Date of Birth
About This Tool
Free age calculator online — calculate your exact age in years, months, weeks, and days from your date of birth. Also shows the number of days until your next birthday. Enter any birthdate and any reference date (or today) to get the precise age down to the day, accounting for leap years and varying month lengths. Used for: calculating age for official forms and government documents, determining age eligibility for programs (e.g., age 18+ or 65+), working out ages for pension calculations, curiosity about someone's exact age on a historical date, and baby age tracking in weeks and months. The calculation correctly handles Feb 29 birthdays in leap years.
How to Use
- 1
Enter your birthdate
Pick the day, month, and year of birth from the date picker.
- 2
Set the reference date
Leave as today, or change to any date to calculate age on that specific day.
- 3
Read your exact age
See your age in years, months, and days, plus days until your next birthday.