Contact
Found a wrong result, a broken page, or want to suggest a tool? Email us and we'll reply, usually within a couple of days.
What helps us fix things fast
- The address of the tool page you were using.
- The values you entered and the result you expected.
- Your browser and device (for example "Safari on iPhone").
We don't use a contact form on purpose: it would need a server, and this site doesn't have one. Your email goes straight to a person.