Contact
We would genuinely like to hear from you — especially if something looks wrong. Send us a message and we will read it.
What to write about
- An inaccurate result. If a calculator's number looks wrong, tell us the calculator and the inputs you used — accuracy is the whole point of the site, and we will check it.
- A calculator you wish existed. Suggestions for new calculators are always welcome.
- A bug or display problem. Let us know your device and browser so we can reproduce it.
- A general question. Anything else about the site.
We read every message, though we cannot promise an individual reply to all of them.