Home & DIY

Roof pitch, slope, and other home and DIY calculators. The math runs in your browser, and nothing you type is uploaded.

• Roof Pitch Calculator

  Enter rise and run (or an angle) to get roof pitch, degrees, slope %, and the pitch multiplier. Add your footprint to estimate roofing squares and bundles.

• Concrete Calculator

  Enter slab, round pad or post hole sizes to get cubic feet, cubic yards, and how many 40, 60 or 80 lb bags of concrete mix to buy, waste included.

• Deck Material Calculator

  Turn your deck's length and width into a shopping list: deck boards, linear feet, joists, rim board, screws and posts. Free, no sign-up.

• Mulch & Gravel Calculator

  Find how much mulch, gravel or stone you need. Enter area and depth to get cubic yards, bag counts and tons, plus how far one yard covers.

• Paver Calculator

  Estimate how many pavers to buy for a patio or walkway, plus the base gravel in tons and bedding sand in bags. Handles joints and waste.

• Paint Calculator

  Enter room size, doors, windows and coats to see how many gallons of paint you need for walls and ceiling, in gallons or gallons plus quarts.