All calculators
15 free calculators for home projects. Each one shows its formula, a worked example and reference tables generated by the same code.
Outdoor and structure
- Concrete calculatorCubic yards and bag counts for slabs, columns and post holes.
- Gravel calculatorCubic yards, tons and bags of gravel, sand or topsoil for any depth.
- Deck calculatorDeck boards, joists and screws, with real board lengths and offcuts.
- Roofing calculatorRoof area from pitch, squares, shingle bundles and edge trim.
- Fence calculatorPosts, rails, pickets and bags of concrete for a wood fence with gates.
- Brick and block calculatorBricks or concrete blocks and bags of mortar for a wall, plus pavers.
- Mulch calculatorBags or cubic yards of mulch, compost or garden soil for beds and raised beds.
- Stair calculatorRisers, treads and stringer length, checked against IRC limits.
Inside the house
- Tile calculatorTiles and boxes, with grout joint and layout waste.
- Flooring calculatorBoxes of laminate, vinyl plank or wood flooring, plus underlayment.
- Drywall calculatorSheets, screws, joint compound and tape for walls and ceilings.
- Carpet calculatorSquare yards to buy from a 12 ft roll, with seams, pad and tack strip.
- Wallpaper calculatorRolls of wallpaper counted strip by strip, with the pattern repeat.
- Paint calculatorGallons and quarts for walls, ceilings and primer.