Age Calculator
To calculate age, enter the date of birth and the date to measure to (today by default). ClickZM counts completed years, then months, then days, the way ages are written on documents, and shows the total in months, weeks, days and hours plus your next birthday.
- Free
- No signup
- Runs in your browser
How to use Age Calculator
- 1Enter your values in the fields; defaults show a worked example.
- 2Pick the units or options that apply to you.
- 3Read the result, which updates instantly as you type.
- 4Check the formula note under the result to see exactly how it was worked out.
Age Calculator: questions people ask
How do I calculate my exact age?
Subtract the birth year from this year, then subtract one if your birthday has not happened yet this year. The calculator also counts the remaining months and days.
How are 29 February birthdays handled?
In common years the birthday is counted on 28 February.
Is my data uploaded when I use the Age Calculator?
No. The Age Calculator runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the Age Calculator work on iPhone, Android and Mac?
Yes. The Age Calculator runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the Age Calculator free?
Yes. The Age Calculator is free with no signup, no watermark and no daily limit.