Age Calculator

Calculate exact age in years, months, days, weeks and hours, plus days until your next birthday.

Processed on your device Works offline Free, no sign-up

How to use Age Calculator

Are leap years counted?

Yes, the calculation uses real calendar dates.

Is Age Calculator free?

Yes. Age Calculator is completely free, with no sign-up, no watermark and no usage limits.

Is my data uploaded to a server?

No. Age Calculator runs entirely in your browser. Your files and text never leave your device.

Does it work offline?

Yes. After Red Cat Tools has loaded once, this tool keeps working without an internet connection. You can also install Red Cat Tools as an app.

Days, weeks and business days between dates.

Birthday, age and gender from a Sri Lankan NIC.

Body Mass Index in metric or imperial units.

X% of Y, percent change, and more.

Monthly installment, total interest and schedule.

Sale price, savings and stacked discounts.