Age Calculator
Calculate your exact age in years, months, and days from your date of birth with leap year support.
Leave empty to use today's date.
Handles leap years and varying month lengths correctly.
Age Calculator – Calculate Your Exact Age from Date of Birth
Use this age calculator to find your exact age in years, months, and days. It is useful for official forms, visa applications, school admissions, and anywhere you need an accurate age based on your date of birth and a specific reference date.
How to use the age calculator
- Enter your date of birth in the "Date of birth" field.
- Optionally choose a reference date, or leave it blank to use today's date.
- Click "Calculate age" to see your exact age.
- Use "Clear" to reset the form and start again for someone else.
What this age calculator shows
- Exact age in years, months, and days.
- Total days lived (approximate, based on calendar days between the two dates).
- Correct handling of leap years and months with different lengths.
Age calculator FAQs
Can this calculate ages in the future?
Yes. Set the reference date to any future date to see how old you will be on that day, as long as it is after your date of birth.
Why do months and days sometimes look different than I expect?
The calculator uses calendar-aware logic: months have different lengths and leap years add extra days in February, so the breakdown into years, months, and days reflects actual calendar time.