MATERIALS & ESTIMATING / TOOL COLLECTION

Construction calculators for materials you can order.

Work out how much concrete, gravel, mulch, flooring, tile, paint, brick, roofing or asphalt to buy, in the units suppliers sell, with waste and cost.

See the 10 calculators
01 / TOOLS IN THIS COLLECTION10 CALCULATORS

Choose your tool.

01 / TOOLSquare Footage CalculatorArea of rooms and spaces in square feet, square meters or yards, with shapes and cost.Open calculator 02 / TOOLConcrete CalculatorConcrete for slabs, footings, columns and steps in cubic yards and premix bags.Open calculator 03 / TOOLGravel CalculatorGravel, stone or sand for an area and depth, in cubic yards and tons.Open calculator 04 / TOOLMulch CalculatorMulch, topsoil or compost for a bed: cubic yards and number of bags.Open calculator 05 / TOOLFlooring CalculatorHow much flooring to buy: area, waste and boxes for wood, laminate, vinyl or carpet.Open calculator 06 / TOOLTile CalculatorTiles and boxes for a floor or wall, by tile size, grout joint and waste.Open calculator 07 / TOOLPaint CalculatorGallons of paint for walls and ceilings, by coats and coverage, minus doors and windows.Open calculator 08 / TOOLRoofing CalculatorRoof area from footprint and pitch, roofing squares, shingle bundles and cost.Open calculator 09 / TOOLBrick CalculatorBricks and mortar for a wall, by brick size and joint thickness, with openings.Open calculator 10 / TOOLAsphalt CalculatorTons of asphalt for a driveway or paving area from its size and thickness.Open calculator
02 / HOW TO CHOOSE

Start with
the right question.

Start with the square footage calculator if you only need an area. Flooring, tile and paint turn that area into boxes and gallons. Concrete, gravel, mulch and asphalt add a depth to get volume, then convert to bags, cubic yards or tons with a stated density. Roofing adjusts the footprint for pitch, and brick counts units per square foot by brick and joint size. These are material estimates, not structural or code advice.

WORKED EXAMPLE

A 10 ft × 12 ft slab 4 inches thick needs 40 cubic feet of concrete, about 1.48 cubic yards. A 10 ft × 20 ft path 3 inches deep needs 50 cubic feet of gravel, about 1.85 cubic yards.

QUESTIONS / 03SHORT ANSWERS

Common questions.

How many cubic yards are in a ton of gravel?

It depends on the stone. Crushed stone weighs more per cubic yard than mulch or sand, so the gravel calculator converts with a stated density for each material and lets you enter your supplier’s figure.

Why add a waste allowance?

Cuts, breakage and uneven surfaces use extra material. The calculators add the percentage you choose and always round boxes, bags and bundles up to whole units.