Home & Yard Calcs

Free calculators for planning US home projects. Each one estimates materials in feet, inches, cubic yards, and standard bag sizes, and shows its formula, waste allowance, and sources so you can check the math.

Concrete and Masonry

Concrete CalculatorEstimate cubic yards and 40, 50, 60, 80, or 90 lb concrete bags for a slab, footing, or Sonotube, using Quikrete and Sakrete data-sheet bag yields.
Rebar CalculatorEstimate rebar sticks, linear feet, weight, tie points, and chairs for a slab or footing grid in US units, with a lap-aware cut list and CRSI bar weights.

Decks

Deck Board CalculatorEstimate deck boards, joists, and face screws for a rectangular deck in feet and inches, and check spacing against 2021 IRC Table R507.7 or the 2026 Trex chart.

Fences and Outdoor

Fence CalculatorEstimate wood fence posts, rails, pickets, and bags of post-setting concrete in US units, using Quikrete's 3x-wide hole rule with a frost-depth check.

Driveways and paths

Gravel CalculatorConvert a driveway, path, or drain into cubic yards and tons of gravel or stone. Edit the density, then split a base layer from the surface stone.

Insulation and Energy

Insulation CalculatorFind the ENERGY STAR attic R-value for your US climate zone and estimate AttiCat blown bags or EcoTouch batt packages, plus the thickness to install.

Garden beds

Mulch CalculatorEstimate cubic yards and bags of mulch for a bed, a circle, or a tree ring. Top-up mode subtracts the depth you already have and keeps mulch off the trunk.

Painting and Interiors

Paint CalculatorEstimate interior wall and ceiling paint in gallons from room size, doors, windows, and coats, then split the wall paint into 5-gallon, gallon, and quart cans.

Patios and Hardscaping

Paver Patio CalculatorEstimate pavers, compacted base in cubic yards and tons, bedding sand, and edge restraint for a patio, walkway, or driveway, with ICPI base depths.

Garden walls

Retaining Wall Block CalculatorEstimate blocks, caps, a 6 inch leveling pad, and drainage stone, in US units, for a straight garden wall or a fire-pit circle, plus a height check.

Roofing