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
Materials
- 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
Utilities & Energy
- 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
Real Estate & Finance
- Rent vs Buy Calculator — Compare true long-term cost of renting vs buying, including equity, appreciation, and opportunity cost