Contact Us
Found a bug, spotted a wrong result, or want a tool we do not have yet? We would like to hear about it.
The fastest way to reach us is email. Write to [email protected] and we will get back to you.
Reporting a problem with a tool
If a calculator or converter gave you a result that looks wrong, please include these details so we can reproduce it quickly:
- The address of the tool you were using
- The exact values you entered
- The result you saw, and the result you expected
- Your browser and whether you were on a phone or a computer
Reports like this are the reason our tools keep improving, so they are always welcome.
Suggesting a new tool
We add tools based on what people actually ask for. Tell us what task you are trying to finish and we will look at whether a tool can help.
Business and partnership enquiries
For anything commercial, use the same address — [email protected] — and mention what it is about in the subject line so it reaches the right person.
Explore the tools
While you are here, you may find what you need on our tools home page, the full sitemap, or read more about who we are. Our privacy policy and terms of use explain how the site works.