Dates & Time
Age Calculator
Calculate exact age in years, months and days from a birth date.
Tip: For legal or administrative use, calculate age against the exact reference date required by the form.
What is this calculator for?
An age calculator finds the exact time between a birth date and a reference date. It reports age in years, months and days, which is more precise than subtracting birth year from current year. This matters for forms, school eligibility, benefits, anniversaries and personal planning. The calculation accounts for month lengths and leap years, so someone born on February 29 or near the end of a month gets a more accurate result than with a simple year difference.
Use the calculator
Enter your numbers below — the calculator runs entirely in your browser, in English, with no signup.
How to use it
- Enter the birth date.
- Choose today's date or another reference date.
- Read the exact age in years, months and days.
Questions and answers
Why not just subtract years?
Subtracting years ignores whether the birthday has happened yet and misses month/day precision.
Does leap year matter?
Yes. Exact date calculations should account for February 29 and different month lengths.
Why only this English page?
This English page is part of the curated i18n rollout. The calculator engine is shared with the Albanian version to keep formulas consistent.