Are my numbers private?

Yes. Every calculation runs in your browser, and what you type stays on your device.

Does it work offline?

Yes. Once this page has loaded, it keeps working without an internet connection.

The maths keeps full precision and only rounds what you see. For loans and taxes, check the final figures with your bank or tax office.

See a time in other cities and time zones, with daylight saving handled for you.

Are my numbers private?: Yes. Every calculation runs in your browser, and what you type stays on your device.
Does it work offline?: Yes. Once this page has loaded, it keeps working without an internet connection.
How exact are the results?: The maths keeps full precision and only rounds what you see. For loans and taxes, check the final figures with your bank or tax office.

Ready-made settings for common jobs.

More calculators for everyday numbers.

Age

Exact age, next birthday

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Hours and minutes

Of, is what %, change

Everyday sums, with history