Age Calculator
Calculate your exact age in years, months, days, hours, and seconds. Find out how old you are or the age difference between two dates.
How old am I in days?
The calculator converts your date of birth into total days, weeks and months lived, not just years. Enter your birth date above and the results panel shows the exact number of days between that date and today, so you can track milestones such as 10,000 days lived.
Age in months
Growth charts, visa forms and childcare records often ask for an age in months. The months figure counts complete calendar months since the birth date, while the years, months and days breakdown shows the remainder in days.
Chronological age for school enrolment
Enrolment cut-offs use chronological age on a fixed date rather than today. Set the target date to that cut-off date and the calculator reports the exact age on that day, including leap years.
Measuring two arbitrary dates instead of an age? Days Between Dates · Time to Decimal Calculator
About Age Calculator
Calculate your exact age in years, months, and days. Find out how old you are down to the day, or calculate age on any specific date. Great for birthdays and age verification.
Use Cases
How to use
Enter your birth date
Optionally enter a target date
View your exact age
See breakdown in years, months, days
Pro Tips
- Calculate age on a future date for planning
- Great for finding exact ages for legal forms
- Shows total days lived too
- Use the target date field to check an age on a school or visa cut-off date
- Copy Result puts the full years, months, days and total-days figure on your clipboard
Frequently Asked Questions
Yes, leap years are accurately calculated in the age computation.
Yes, enter any date to see age at that point in time.
Accurate to the day, accounting for all calendar variations.
Enter your birth date and leave the target date as today. The Total days lived card shows the exact number of days, and the weeks and months cards break the same span down differently.
Set the target date to the enrolment cut-off date instead of today. The calculator then reports the chronological age on that date in years, months and days.