Landscaping Material Calculators
Work out how much topsoil, gravel, stone or grass seed your project needs, in the units your supplier actually quotes in. Every calculator shows its working, so you can check the number rather than take it on trust.
Typical dry weight. For depth presets, coverage, cost and delivery, see the full Topsoil calculator.
All calculators
Grouped by material. Each one returns cubic yards, tons and a bag count, because quarries quote by weight, yards load by volume and garden centers sell bags, and the three rarely agree.
Soil & Dirt2 calculators
Topsoil Calculator
Yards, tons and bags, with depth presets for seed, sod and beds.
Fill Dirt Calculator
Volume with a compaction allowance for holes and low spots.
Rock & Gravel4 calculators
Gravel Calculator
Eight grades, each with its own weight per cubic yard.
River Rock Calculator
Tons and coverage by rock size, from 1-3" to 3-5".
Pea Gravel Calculator
Patios, dog runs and the joints between flagstone.
Decomposed Granite Calculator
Tons, yards and stabilizer, with compaction allowed for.
Projects3 calculators
Gravel Driveway Calculator
Three courses, three grades, weighed and priced separately.
French Drain Calculator
Stone, pipe, fabric and the fall across the run.
Shed Base Gravel Calculator
Pad size, border overhang and the right grade of stone.
Lawn7 calculators
Lawn Square Feet Calculator
Add and subtract areas to get the mowable grass.
Grass Seed Calculator
Seeding rates by species, new lawn or overseeding.
Lawn Mowing Cost Calculator
What a visit should cost, from either side of the deal.
Lawn Mowing Time Calculator
How long it takes on each of the four machines.
Lawn Mowing Calculator
A season priced as a contract, with the margin on it.
Acres Per Hour Calculator
Work rate from deck width and ground speed.
Calories Burned Mowing
From lawn size, plus the miles you walked behind it.
More calculators1 calculator
Pine Straw Calculator
Bale counts for any bale size, from mini to jumbo.
How the calculators work
- Enter your area and depth. Measure in feet or meters, or take a preset depth for a path, a driveway, a garden bed or a lawn under sod.
- Get yards, tons and bags together. Suppliers quote in different units, so every result shows all three and tells you which one to order in.
- Check it against the chart. Each page carries a coverage or weight table beside the tool, drawn from the same figures, so a chart can never disagree with the calculator next to it.