Find your exact age, days lived, next birthday, age difference and the date when you will reach a specific age.
People use an age calculator for different questions: exact age today, days lived, time until the next birthday, age difference between two people, or the date when someone will turn 18, 30 or 60. This calculator brings those answers together in one consistent date engine with clear rules for leap years, February 29 birthdays and civil calendar comparisons.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/age-calculator"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Age Calculator"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
It compares the birth date with a reference date and returns the exact civil age in years, months and days. The same engine also powers days lived, next birthday, age difference and future target age calculations.
Enter a birth date to begin
Dates and calculations stay only in your browser.