Construction Calculators
Made Simple
Free DIY & contractor calculators for concrete, roofing, landscaping, flooring, paint and more.
Popular calculators
Most-used tools by DIYers and contractors.
Browse by category
Concrete & Masonry
Slabs, footings, bags, gravel base and more.
ExploreLandscaping
Gravel, mulch, soil and outdoor materials.
ExploreFlooring & Interior
Tile, paint, square footage and interior work.
ExploreRoofing & Exterior
Roofing materials and exterior surfaces.
ExploreConversion Tools
Cubic yards, square footage and unit conversions.
ExploreFrequently asked questions
▸Are these construction calculators free?
Yes — every calculator on BuildMateCalc is 100% free with no signup required.
▸Do you support metric and imperial units?
All calculators include a unit toggle so you can work in feet/inches or meters/centimeters.
▸Are the calculations accurate?
We use the same formulas contractors use. Always add a waste factor and double-check with your supplier before ordering materials.
▸Can I use BuildMateCalc on my phone?
Yes. The site is mobile-first with large touch-friendly inputs and a sticky bottom navigation bar.