Contact Us
We'd love to hear from you — whether you've found an error in a calculator, have a suggestion to make a tool better, or want a calculator we haven't built yet.
The best way to reach us is by email: [email protected]
To help us respond quickly, please include:
- The name or link of the calculator you're writing about.
- What you entered and what result you expected.
- Your device and browser, if you're reporting something that looks broken.
Corrections
Accuracy matters to us. If you believe a formula or figure is wrong, tell us where it appears and what the correct value should be, ideally with a source. We update tools promptly when we confirm an issue.
New calculator requests
Tell us the exact question you want answered (for example, “how much filament will this print use?”) and we'll consider adding it.