Contact

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Reporting a wrong result

If a calculator gives a result you think is wrong, please include the name of the calculator, the shape, every number and unit you entered, and the result you expected. That makes it possible to repeat the calculation.

Suggesting a calculator

If a calculator you need is missing, send its name and what it should work out. New calculators are added from these requests.

Writing to the author

To reach the author directly, see the author page.