Calculators · FREE

Age Calculator

Calculate age between two dates. Processing for supported tools happens locally in your browser.

About Age Calculator

Use this browser-based utility for everyday tasks. Review output before relying on it and retain a copy of important originals.

Read the Age Calculator guide →

About Age Calculator

Use an age calculator to find the elapsed time between a date of birth and another date, such as today or a chosen milestone. Check the selected date before using the result in forms or records.

How to use Age Calculator

  1. Enter the date of birth.
  2. Choose Calculate.
  3. Read the result in years, months and days, counted up to today.
  4. Check the date before you use the result in any official paperwork.

Official use

The calculator only works with the date you type. It does not check identity documents or the time of birth, and it does not apply the age rules of a school, an employer or a country. For admissions, a job application, a pension or a legal matter, rely on the official documents and the rules of the office that asks.

Frequently asked questions

Can I calculate age on a past date?

No. The age calculator always counts up to today. For the days between two dates use Date Difference Calculator.

Why can the result differ from dividing days by 365?

Calendar years include leap days and months have different lengths, so age is shown as calendar years, months and days.

Can I see age on a past date?

No. The age calculator always counts to today. For the days between two dates use Date Difference Calculator.

Does it show my age in days?

It shows years, months and days. For the total number of days use Date Difference Calculator with today's date as the end date.

More Calculators tools

Want more detail, examples and answers to common questions? Read the Age Calculator guide.

About Age Calculator

Use an age calculator to find the elapsed time between a date of birth and another date, such as today or a chosen milestone. Check the selected date before using the result in forms or records.

How to use Age Calculator

  1. Enter the date of birth.
  2. Choose Calculate.
  3. Read the result in years, months and days, counted up to today.
  4. Check the date before you use the result in any official paperwork.

Official use

The calculator only works with the date you type. It does not check identity documents or the time of birth, and it does not apply the age rules of a school, an employer or a country. For admissions, a job application, a pension or a legal matter, rely on the official documents and the rules of the office that asks.

Frequently asked questions

Can I calculate age on a past date?

No. The age calculator always counts up to today. For the days between two dates use Date Difference Calculator.

Why can the result differ from dividing days by 365?

Calendar years include leap days and months have different lengths, so age is shown as calendar years, months and days.

Can I see age on a past date?

No. The age calculator always counts to today. For the days between two dates use Date Difference Calculator.

Does it show my age in days?

It shows years, months and days. For the total number of days use Date Difference Calculator with today's date as the end date.

More Calculators tools

Want more detail, examples and answers to common questions? Read the Age Calculator guide.