Age and Date Calculators

Convert calendar dates into ages, durations and working-day counts. Leap-year handling and inclusive date options are built into each tool.

7 Tools Available• Free & Private

Age Calculator

Find exact age in years, months and days from a date of birth.

Measure the gap between two dates in years, months, weeks and days.

Count the days between two dates, including or excluding the end date.

Add or subtract a number of days from a starting date.

See how many days remain until the next birthday.

Count Monday–Friday days and optionally skip listed holidays.

Test whether a year has 29 February under Gregorian rules.

Convert calendar dates into ages, durations and working-day counts. Leap-year handling and inclusive date options are built into each tool.

Formulas clearly stated on every tool

Interactive worked examples included

Zero cookies required for calculations