Contact
Corrections are the most welcome kind of message. If a calculator gives an answer you believe is wrong, tell us what you entered and what you expected.
Write to hello@fourfunctioncalculator.com. Messages are read by a person, and reports of incorrect results are prioritised over everything else.
Reporting a wrong answer
The fastest way to get something fixed is to include:
- The page you were on.
- Exactly what you typed into each box, including any mode you had selected.
- The answer you got and the answer you expected.
- Your browser and device, if the problem looks like a display issue rather than a math one.
Most calculators on this site put your inputs into the address bar, so copying the full URL captures everything in one step.
Suggesting a calculator
Suggestions for new tools are welcome. The ones most likely to get built are the ones where a step-by-step answer is genuinely more useful than a single number.
Business details
DigiKasvu — sole proprietorship registered in Finland, Business ID 3612228-8. Correspondence in English please.