CPVCPV Technologies
Online Tools / Age Calculator
Everyday tools

Age Calculator

Calculate age between a date of birth and a selected reference date.

Use the tool

Free to use in your browser. Calculations happen locally on this device.

Age—
Total days lived—
Next birthday—
Days until birthday—

About this tool

Calculates calendar age between two dates, total elapsed days, and the next birthday. Age calculations can vary in official contexts; use the relevant authority’s rules when required.

CPV Technologies provides this utility for general informational use. Check input values and assumptions before relying on a result.

Want a walkthrough?

Read the step-by-step guide to the Age Calculator for examples, tips and answers to common questions, or browse all guides.