Calculate anything
for your project
Materials, costs, quantities — get accurate estimates for home improvement projects in seconds.
Browse by Category
Landscaping & Outdoor
Calculate how much mulch, gravel, topsoil, sod, and other landscaping materials you need for your outdoor projects.
Concrete & Masonry
Estimate concrete, brick, paver, and block quantities for slabs, walls, patios, and other masonry projects.
Painting & Staining
Figure out how many gallons of paint or stain you need for interior walls, decks, fences, and more.
Flooring
Calculate tile, laminate, vinyl plank, carpet, and grout quantities with waste factor included.
Landscaping & Outdoor
3 calculators
Concrete & Masonry
3 calculators
Painting & Staining
2 calculators
Flooring
3 calculators
About Calcomo
Calcomo provides free, accurate calculators for home improvement and construction projects. Whether you're building a patio, painting a room, or laying new flooring, our tools help you estimate the right amount of materials before you buy.
All calculators include waste factors, cost estimates, and detailed explanations of formulas used. Results are approximate — always verify quantities with your supplier or contractor before making large purchases.