Age Calculator

Calculate your exact age in years, months, and days
About this Chronological Age Calculator

This chronological age calculator is a free online age calculator that shows the exact time between your date of birth and a target date. It is designed as a practical age calculator for everyday use as well as clinical and educational settings where you need precise chronological age.

How this chronological age calculator works:

  • Uses your date of birth and a "calculate age on" date to calculate age precisely
  • Acts as an age calculator in years, months and days with totals for days, weeks and months lived
  • Automatically accounts for leap years and different month lengths when it calculates age
  • Shows zodiac and Chinese zodiac alongside your chronological age for quick reference

Pearson-style chronological age calculator use cases:

  • Use this tool like a Pearson chronological age calculator when scoring standardized tests that require exact chronological age
  • Quickly calculate age for school placement, speech and language evaluations or developmental checklists
  • Keep a consistent method to calculate age across clinics, classrooms and HR workflows

All age calculator results are based on the Gregorian calendar. If you need to calculate age for legal, medical or assessment purposes, always confirm requirements for how chronological age must be reported.

Age Calculator FAQ

What is a chronological age calculator?

A chronological age calculator is an age calculator that measures the exact time between your birth date and another date. This chronological age calculator shows your age in years, months and days so you do not have to manually calculate age from a calendar.

Is this like a Pearson chronological age calculator?

Yes. While it is not affiliated with Pearson, this tool works very similarly to a Pearson chronological age calculator. You enter a date of birth and a test date, and the age calculator returns the chronological age that many Pearson assessments require when you calculate age for scoring.

How do I use the age calculator to calculate age?

Enter your date of birth, choose the date you want to calculate age on, and press the button. The age calculator will calculate age automatically and display your chronological age plus totals in days, weeks and months.

Can this age calculator in years, months and days handle future or past dates?

Yes. You can use the age calculator in years, months and days to calculate age on any past or future date as long as it is not earlier than your birth. That makes the chronological age calculator useful for planning milestones and filling out forms that ask you to calculate age on a specific day.

When should I use a chronological age calculator instead of estimating?

Any time a form, assessment or report needs exact age in years, months and days, you should use a chronological age calculator. This online age calculator reduces mistakes that happen when people try to calculate age in their head and keeps your records consistent over time.

Chronological Age Calculator – Free Online Age Calculator | CalcCentral