Calculator collection
Soil & mulch calculators
Mulch, topsoil, sand and raised-bed soil in yards, tons and bags.
Decomposed Granite CalculatorFree decomposed granite calculator. Enter path or patio size and depth to get DG in cubic yards, tons, m³ and bags, with your supplier's density as an override.Open calculator Excavation CalculatorFree excavation calculator. Enter length, width, depth and soil type to get bank cubic yards, loose yards after swell, m³ and truckloads to haul away.Open calculator 
Fill Dirt CalculatorFree fill dirt calculator. Enter area and depth to get cubic yards, tons and m³ of fill dirt for backfill, grading, low spots, ponds and pool fill-ins.Open calculator 
Mulch CalculatorFree mulch calculator. Enter bed size and depth to get cubic yards, cubic feet, cubic meters and 1.5, 2 or 3 ft³ bags of mulch for any bed or tree ring.Open calculator 
Paver Base CalculatorFree paver base calculator. Enter patio or walkway size and base depth to get cubic yards, tons and m³ of crusher run or #57 stone under pavers.Open calculator Paver CalculatorFree paver calculator. Enter patio size, paver size and pattern to get pavers to buy, pavers per square foot, plus base gravel and bedding sand in tons and m³.Open calculator 
Paver Sand CalculatorFree paver sand calculator. Enter patio size to get cubic yards, tons, m³ and 0.5 ft³ bags of bedding sand at 1 in, plus polymeric joint sand bag counts.Open calculator Pine Straw CalculatorPine straw calculator: enter bed size, the coverage on your bale and the depth you want to get bales of pine straw, area in m² and total cost.Open calculator Polymeric Sand CalculatorFree polymeric sand calculator. Enter patio size, paver size, joint width and paver thickness to get bags of polymeric sand, coverage per bag and joint volume.Open calculator 
Raised Bed Soil CalculatorSoil calculator for raised beds. Enter bed length, width and depth to get cubic feet, cubic yards, litres and bags of soil for 4x4, 4x8 or any size bed.Open calculator 
Sand CalculatorFree sand calculator. Enter area and depth to get cubic yards, tons, tonnes, cubic meters and 50 lb bags of sand for pavers, sandboxes and pool bases.Open calculator 
Topsoil CalculatorFree topsoil calculator. Enter area and depth to get cubic yards, tons, cubic meters and bags of topsoil or fill dirt for a lawn, garden bed or grading job.Open calculator FAQ
Frequently asked questions
How do I calculate mulch in cubic yards?
Area in ft² × depth in inches ÷ 324. A 300 ft² bed at 3 in needs 300 × 3 ÷ 324 = 2.78 yd³. Clemson Extension uses the same formula.
How deep should mulch be?
Clemson Extension recommends a 2–3 in layer of organic mulch over the roots of trees, shrubs and beds, kept at least a hand's width away from trunks.
How much topsoil do I need for a new lawn?
Penn State Extension says at least 4 to 6 in of good topsoil (firmed or settled depth) is needed for good turf. At 4 in, 1,000 ft² needs 1,000 × 4 ÷ 324 = 12.3 yd³.
How do I fill a raised bed?
Volume = length × width × height. University of Illinois Extension gives the example of a 6 × 3 ft bed with 12 in sides holding 18 ft³ (0.67 yd³), filled with a 1:1 mix of compost and garden soil.
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