Contact us

Questions, corrections, bug reports, or ideas for a calculator you wish existed — we read everything that comes in. The fastest way to reach us is email:

What to include

• Bug reports: tell us which calculator, what you entered, what you expected, and what you got instead. A screenshot helps a lot.
• Questions about a result: mention the tool and the inputs you used so we can reproduce it.
• Tool suggestions: describe the question you're trying to answer — that's more useful to us than a feature spec.

Response time

TidyCalcs is a small operation, so replies can take a few days — but bug reports get priority, and every message gets read.

Just want to explore the tools? Head back to the homepage for the full list.