Age Calculator

Calculate exact age from a birth date to today or to any other target date with calendar-aware totals.

Preparing Age Calculator

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Input

Enter a birth date, then choose whether you want the age calculated to today or to a custom target date. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Age Calculator

Add the birth date and optional target date, and the calculator will break the elapsed time into calendar years, months, days, and cumulative totals.

What this calculator is for

This calculator is for birthdays, forms, insurance checks, school admissions, and any date-based situation where an exact age matters more than a rough year count.

Tips

Leave the target date blank when you want the result measured against today automatically.
Use the actual legal birth date because even a one-day shift can change age-sensitive deadlines.