Age Calculator
Enter a date of birth to get the exact age in years, months and days, the day of the week you were born, and how many days until the next birthday.
What “calculated on your device” means for this tool
When you open this page, your browser downloads the calculator itself, the same way any web page loads. From then on, every calculation happens inside your browser, on your own device. The dates you enter, including birthdays, are never sent to this website's server or to anyone else.
What is saved: nothing. Dates are forgotten when you close the page.
Visit counting: this site counts visits with privacy-friendly analytics. No cookies, no ads, no tracking across other sites, and your IP address is not stored. It records which page you opened, your country, your device type and how long you stayed.
How to use the Age Calculator
- Enter the date of birth.
- Leave “Age on” as today, or pick another date.
- Read the exact age at the top.
- See total months, weeks, days and the next birthday below.
Questions
How is age calculated?
In full years, then the months and days since the last birthday, the same way ages are counted on forms.
What day of the week was I born?
It is shown as “Born on a”.
Is my birthday saved?
No. Nothing is stored or sent; the dates are forgotten when you close the page.
Popular uses: Age & Date Calculator · Days Between Dates
Still stuck, or want a tool that isn't here? Ask on the Nebula Discord.