How is age calculated?

Age is calculated from your birth date to the selected date, showing completed years, months, and days.

Can I calculate age for a past or future date?

Yes, you can set any target date — past or future — to calculate age relative to that date.

Yes, completely free with no sign-up required.

Age Calculator

Calculate your exact age in years, months, and days. Find out how many days you have lived and when your next birthday is.

Date of Birth

What is an Age Calculator?

An age calculator computes your exact age from your date of birth to today. It breaks down your age into years, months, and days, and also tells you the total number of days you have lived.

How to use this tool

Enter your date of birth using the date picker
Click Calculate Age
Your exact age and next birthday information will be displayed instantly

What you get

Age in years, months, and days
Total days lived
Date and countdown to your next birthday

Example use cases

Legal purposes: Verify age for legal documents or age-restricted services
Health tracking: Calculate age accurately for medical records
Fun: Find out exactly how many days you have been alive