Contact BuildingMath

Questions, feedback, or spotted an error in a calculation? We want to hear about it — the accuracy of these calculators matters more to us than anything else on the site. Email us at contact@buildingmath.com and we read every message.

If you are reporting a possible calculation error, it helps enormously if you include: which calculator you used, the exact measurements and options you entered, the result the site gave you, and the figure you expected (and where it came from, such as a product bag or supplier quote). That lets us reproduce the case and fix it properly.

BuildingMath is operated by JD Projects, a registered Danish sole proprietorship.