Age & days-between calculator
Exact age in years/months/days, days between dates, weekday of any date.
Free for personal, school and small-business use. No sign-up.
How to use this template
Download the .xlsx and open it in Microsoft Excel, Google Sheets (File → Import) or LibreOffice Calc. Type only into the yellow cells – white cells contain formulas and update automatically. Save a copy for each month or project.
