Which functions are available?

sqrt, abs, sin, cos, tan (radians), ln, log (base 10), exp, round, floor and ceil, plus the constants pi and e.

It gives the remainder after division: 17 mod 5 is 2.

Is anything I enter stored?

No. The calculation happens in your browser and nothing is sent or saved.

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

A quick calculator with brackets, powers, roots and a running history.