Contact
Found a bug, spotted a wrong conversion factor, or want a specific calculator built next? We read everything.
The fastest way to reach us is email:
What to include
- Which calculator or page you were using
- The numbers you entered and the result you expected
- Browser and device, if something rendered oddly
Other requests
For feature suggestions, see the roadmap in the guides section — if your idea is already listed, a quick "+1" helps us prioritise it.