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Reporting an incorrect result

Accuracy matters more than anything else here, so these reports get looked at first. Including the following makes a problem much faster to reproduce:

• Which calculator you were using.
• The exact numbers you entered.
• The answer you got, and the answer you expected.
• Your browser and device, if the problem looks like a display issue.

Suggesting a calculator

If there is a percentage calculation you keep doing by hand, it is worth mentioning — a short description of the situation is more useful than a formula, because it explains what the tool would actually need to do.

What this address is not for

No personalised financial, tax, medical or legal advice can be offered, and homework cannot be completed on request. The how-to guide and the formula reference explain the working behind every calculator on the site.