Contact us
Anything else — questions, feedback, or just to say hello.
Every message goes to a person, not a ticket queue. If a calculator gave you a number you think is wrong, the most useful report includes the tool name, the exact values you entered, the result you got and the result you expected — see how we build and verify each calculator for what happens after that.
Something more specific?
These go to the same inbox but ask for the details we'd otherwise have to email you for.
- Request a calculatorTell us what you needed and couldn't find. Requests genuinely drive what we build next.
- Advertise with usPlacements, sponsorship and media enquiries from brands who want to reach people mid-calculation.
- Write for usPitch a contribution if you know a subject well enough to explain the maths behind it.
- Partnerships and linksResource-page inclusion, embeds and collaborations with other independent sites.