Age Calculator
Enter a date of birth to see the exact age in years, months and days, plus totals in months, weeks and days and the countdown to the next birthday. Optionally calculate the age on a specific date.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
How to use Age Calculator
- 1
Open Age Calculator and fill in the fields.
- 2
Pick any options that apply.
- 3
Read the result straight away — it recalculates as you type.
What you get
- Years / months / days breakdown
- Totals in months, weeks, days
- Next-birthday countdown
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- Does it account for leap years?
- Yes. The breakdown uses real calendar months and the day totals count actual elapsed days, so leap years are handled correctly.