Contact
Get in touch
BuildCalc is run by a small team. The best way to reach us is by email — we read every message and especially want to hear about any result that looks off.
Report a number
Think a density, coverage rate, or result looks wrong? Tell us the calculator and your inputs and we will recheck the formula.
Request a calculator
Need help planning a building or craft project? Tell us the task and the result you need.
Business & advertising
Questions about advertising, partnerships, or media use of our calculators.
Looking for how our calculators work or where our data comes from? See our About page.