Contact us

Found a bug, spotted a number that looks off, or want a calculator we haven't built yet? We'd genuinely like to hear it — accuracy reports are how these tools get better.

Email us at hello@thebuildcalculator.com and we'll get back to you within a few days.

Before reporting a result as wrong

• Check the units — depth fields are in inches, lengths in feet, on every calculator.
• Densities vary by supplier and moisture; our figures are industry-standard averages.
• Waste factors are included where noted — your raw math may differ by that percentage.