Every calculator a homeowner needs, in one place

Free calculators for building, remodeling, and maintaining your home — enter your measurements and get a straight answer.

Browse by category

Measuring & volume

Square footage, cubic yard, cubic feet, volume, circles

Concrete & masonry

Concrete, gravel, brick, mortar, sand, countertops

Lumber & framing

Stairs, decks, fences, siding, studs, shop math

Sizing, chemistry dosing, and equipment sizing

Blow-in attic insulation bags and R-value

Electrical & utilities

kWh cost, solar, wire gauge, load, ventilation

Dwelling rebuild cost estimator

Roof pitch, area, shingles, rafters, metal panels, and cost

Flooring & tile

Tile, flooring cost, carpet, laminate, thinset, grout

Paint & drywall

Paint, wall square footage, drywall, mud, wallpaper, cost

HVAC — heating & cooling

BTU, AC tonnage, mini-split, furnace, heat pump, SEER

Everyday & hobby

Furniture fit, markup, aquarium, sewing, and more

Popular this week

Concrete Calculator Concrete Square Footage Calculator Measuring Pool Volume Calculator Pool Gravel Calculator Concrete Cubic Yard Calculator Measuring Circle Calculator Measuring Deck Calculator Lumber Fence Calculator Lumber Kitchen Remodel Cost Calculator Everyday kWh Cost Calculator Electrical Solar Panel Calculator Electrical Pool Chemical Calculator Pool Electrical Load Calculator Electrical Brick Calculator Concrete Desk Height Calculator Everyday Room Size Calculator Everyday