MiAgeCalculator.com

Date Tool

Age Calculator

Fast and clear age calculation from any birth date.

Why use this calculator

Calendar accurate

Age is calculated in exact years, months, and days using real calendar differences.

Leap-year ready

February 29 birthdays are handled properly for both leap years and non-leap years.

Private by default

Calculations run in your browser. No sign-up and no personal profile required.

How to use this age calculator

  1. Enter your date of birth.
  2. Keep As of date as today or choose any custom date.
  3. Click Calculate age to get exact years, months, and days.

What is an age calculator?

An age calculator is a tool that measures your chronological age from your date of birth (DOB) to a selected date. Instead of rough approximations, it gives a clear age breakdown in years, months, and days.

Mi Age Calculator is designed for quick and accurate results. You can calculate your current age, check age at a past or future date, and use live age mode to see age running in real time.

Common use cases

Education and admission

Check student age eligibility for school admissions, exams, and academic forms.

HR and recruitment

Verify age criteria in hiring workflows, application screening, and policy checks.

Documents and planning

Use exact age values for legal paperwork, insurance forms, and milestone planning.

How age is calculated accurately

  1. The calculator reads your birth date and the selected target date.
  2. It compares calendar parts (year, month, day) instead of using rough day-only estimates.
  3. Month-length differences and leap-year scenarios are applied for exact results.
  4. In live mode, hours, minutes, and seconds update every second.

This approach gives consistent results for birthday calculations, age verification, and date-of-birth based tools.

Visitors often search for terms like age calculator by date of birth, DOB age calculator, calculate age in months and days, birthday countdown calculator, and live age clock.

If you need policy details or deeper explanations, visit the About and FAQ pages.

Quick answers

How do I calculate age from date of birth?

Enter your birth date, choose an as-of date if needed, and click calculate.

Can I calculate age for a future or past date?

Yes. Set the As of date to any date and the result updates instantly.

What does live age mode show?

It updates age every second and displays live hours, minutes, and seconds.

Does it work with leap-year birthdays?

Yes. February 29 birthdays are handled correctly in leap and non-leap years.

Is this calculator free?

Yes, it is free to use.