Free Construction Calculators — Concrete, Lumber, Roofing & More

Our construction calculators give contractors, homeowners, and DIYers accurate material estimates before a single nail is driven. Whether you're pouring a concrete slab, framing a wall, laying flooring, or reroofing a house, each tool applies industry-standard waste factors so you order exactly what you need — not a rough guess.

Material overages inflate job costs; shortages stall work and force expensive second trips to the supply yard. Running the numbers first means tighter quotes, fewer surprises on-site, and projects that finish on time and on budget — whether you're a weekend DIYer or a seasoned contractor managing multiple jobs.

Flooring & Surfaces

Calculate materials for floors, walls, and ceilings.

Structure & Frame

Estimate concrete, lumber, and structural components.

Outdoor & Landscaping

Plan landscaping materials and outdoor areas.

Systems & Energy

Size HVAC systems, solar panels, and electrical loads.