All calculators
Seventeen calculators across five project types. Each one works in imperial and metric units and explains exactly how it calculates.
Concrete
Concrete CalculatorConcrete volume for slabs, footings, columns, tubes and steps — in cubic yards, cubic metres and bags.Open calculator Concrete Slab CalculatorHow much concrete a patio, shed base or driveway slab needs, with bag counts and cost.Open calculator Concrete Bag CalculatorHow many bags of pre-mixed concrete you need, using the yield printed on your bag.Open calculator Cubic Yard CalculatorConvert length × width × depth into cubic yards, cubic feet and cubic metres.Open calculator
Landscaping
Gravel CalculatorCubic yards, tons or tonnes of gravel and crushed stone for paths, beds and bases.Open calculator Pea Gravel CalculatorPea gravel for patios, paths and play areas — volume, weight and number of bags.Open calculator Gravel Driveway CalculatorStone for a layered gravel driveway — tons per layer, compaction allowance and truckloads.Open calculator Mulch CalculatorHow many cubic yards or bags of mulch you need for garden beds at any depth.Open calculator Topsoil CalculatorTopsoil volume, weight and bags for lawns, raised beds and levelling.Open calculator
Flooring & Tile
Tile CalculatorHow many floor or wall tiles and boxes you need, including grout joints and cutting waste.Open calculator Shower Tile CalculatorTiles for shower or tub surround walls — up to three walls, minus windows and niches.Open calculator Flooring Waste CalculatorAdd the right waste allowance for laminate, vinyl plank, hardwood or tile and round up to full boxes.Open calculator Grout CalculatorHow much grout to buy based on tile size, tile thickness and joint width.Open calculator