Contact

Spotted a number that looks wrong, want a calculator we don’t have yet, or something isn’t working on your device? We’d like to hear about it.

Email: hello [at] supplymath.com

Helpful to include

• The page address (URL) and the numbers you entered.
• What you expected to see, and where that figure comes from (bag label, supplier quote, plans).
• Your device and browser if something looks broken.

We read every message and fix confirmed errors quickly. We can’t give site-specific engineering or building-code advice; for structural work, please talk to a local professional.