Contact
Contact
Questions, corrections, or feedback — we read everything.
We welcome bug reports, calculation corrections, requests for new tools, and feedback on existing tools. Pick the most appropriate channel below.
General feedback
[email protected]Calculation corrections
[email protected]Please include the tool slug, your inputs, and the expected vs actual result. Source citations are appreciated.
Affiliate / partnership
[email protected]We aim to respond within 2 business days. Calculation corrections are prioritized — if you find a real bug, we'll fix it and credit you on the page if you'd like.
When reporting a calculation issue, please include:
- 1. Tool URL (e.g.
/concrete/slab) - 2. Inputs used (e.g.
l=10, w=10, t=4, q=1) - 3. Result shown by the calculator
- 4. Expected result (with source — e.g. "Quikrete bag yield table says X")
- 5. Browser and OS
We do not store emails or contact information beyond what is needed to respond to your message. We do not add you to any mailing list (we don't have one). Your message is governed by our privacy policy.