All calculators
36 free calculators, grouped by project. Each one gives a shopping list, shows the math behind it and downloads as a PDF report.
Land & acreage
Acres, lot size, square footage and volume: measure the ground before you plan anything on it.
Acreage Calculator
Acres of any field, lot or parcel from its measurements.
Open calculatorAcres to Square Feet Converter
Convert acres to square feet and back, instantly.
Open calculatorHectares to Acres Converter
Convert hectares, acres and square meters both ways.
Open calculatorLot Size to Acres Calculator
Square feet and acres of any four-sided lot, plus lot coverage.
Open calculatorSquare Footage Calculator
Square footage of any yard, bed or lawn, any shape.
Open calculatorCubic Yard Calculator
Turn length, width and depth into cubic yards.
Open calculatorGravel, stone & sand
Tons and yards of gravel, pea gravel, river rock, crushed stone and sand.
Gravel Calculator
Tons or cubic yards for a path, base or driveway.
Open calculatorPea Gravel Calculator
Tons, yards and bags of pea gravel for paths, patios and play areas.
Open calculatorRiver Rock Calculator
River rock for beds, borders and dry creek beds, by rock size.
Open calculatorCrushed Stone Calculator
Crushed stone for bases, drainage and driveways, loose or compacted.
Open calculatorLandscape Rock Calculator
Decorative rock for beds and ground cover, in tons and bags.
Open calculatorSand Calculator
Tons, yards or 50 lb bags of sand for any depth.
Open calculatorMulch & ground cover
Bags or yards of wood mulch and rubber mulch, at the right depth.
Soil & garden beds
Soil, topsoil, fill dirt, compost and raised beds, plus how many plants fit.
Soil Calculator
Bags or bulk yards of garden soil for any bed or planter.
Open calculatorRaised Bed Soil Calculator
Fill one or several raised beds, with the mix split out.
Open calculatorTopsoil Calculator
Yards and tons of topsoil to level, fill or build a lawn.
Open calculatorFill Dirt Calculator
Yards, tons and truckloads of fill dirt, with compaction.
Open calculatorCompost Calculator
Compost for top-dressing a lawn or amending garden beds.
Open calculatorPlant Spacing Calculator
How many plants fit an area, in a grid or offset rows.
Open calculatorLawn
Sod, grass seed and fertilizer: quantities for a new or existing lawn.
Patios, pavers & walls
Pavers, flagstone, base, sand, concrete and retaining wall blocks.
Paver Calculator
Pavers, base gravel and bedding sand for a patio or path.
Open calculatorPaver Base Calculator
Tons of compacted base gravel under a patio or driveway.
Open calculatorPaver Sand Calculator
Bedding sand for the 1 inch layer under pavers.
Open calculatorPolymeric Sand Calculator
Bags of joint sand from paver size and joint width.
Open calculatorFlagstone Calculator
Tons and pallets of flagstone by thickness.
Open calculatorConcrete Calculator
Bags or yards of concrete for slabs, patios and post holes.
Open calculatorRetaining Wall Calculator
Blocks, caps and base gravel for a garden wall.
Open calculatorFences & decks
Posts, pickets, rails, concrete and deck boards for outdoor wood structures.
Driveways
Gravel layers and road base for a driveway that carries cars.
Pools & ponds
Gallons in any pool or pond, the number every chemical dose and pump size starts from.
Guides and about
Depth charts, buying advice and how Terrainity works.