Contact Us
Bug reports, calculator requests, and feedback are all welcome.
Email us
We read every message and aim to reply within a few days. If you are reporting a calculation issue, please include the numbers you entered and the result you expected — it helps us reproduce the problem quickly.
What to write about
- Bug reports — a result that looks wrong, a page that does not load, a layout issue on your device.
- New calculators — tell us the calculation and we will consider adding it.
- Privacy questions — see our privacy policy first; anything unclear, just ask.