Construction Calculators

Free online construction and home improvement calculators for measuring, estimating materials, and planning renovation projects.

Area & Measurements

Square Footage Calculator — Calculate room and total square footage for multiple rooms with metric/imperial support

Concrete Calculator — Cubic yards, cubic feet, and 80lb bags needed for slabs and columns
Paint Calculator — Gallons of paint needed for any room, accounting for doors, windows, coats, and waste
Tile Calculator — Tiles and boxes needed for floors or walls with waste factor and grout lines
Flooring Calculator — Material quantity and cost for hardwood, laminate, vinyl plank, carpet, or tile
Mulch Calculator — Cubic yards and bags of mulch for multiple garden beds at any depth
Gravel Calculator — Cubic yards and tons of gravel for driveways, paths, and drainage

Electricity Cost Calculator — Monthly and annual electricity cost per appliance and total household
Solar Panel ROI Calculator — Payback period and 25-year savings after the 30% federal tax credit

Rent vs Buy Calculator — Compare true long-term cost of renting vs buying, including equity, appreciation, and opportunity cost