Free construction calculator
Gravel, mulch and topsoil calculator
How many yards, tons or bags: crushed stone, pea gravel, river rock, sand, topsoil or mulch, from the area and the depth.
Result
| Area | 200 ft² |
|---|---|
| Cubic yards | 1.85 yd³50 ft³ |
| Tons | 2.59At about 1.4 t/yd³ |
| 0.5 ft³ bags | 100If you buy it bagged |
- Weights vary by stone and moisture; your supplier’s number wins. Add 10 to 15% when it will be compacted.
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Plain words, feet and inches. Dex shows the numbers and how it got them.
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How it works
Cubic feet are length × width × (depth in inches ÷ 12), and cubic yards are cubic feet ÷ 27.
Stone and soil are sold by the ton too. Typical weights: crushed stone and pea gravel about 1.4 tons per cubic yard, river rock and sand about 1.35, topsoil about 1.1. Wet material weighs more.
Mulch is sold by the yard or in 2 ft³ bags (13.5 bags to a yard).
Worked example
A 10 × 20 ft area at 3" deep is 50 ft³: 1.85 yd³.
In crushed stone that is about 2.6 tons; in mulch, 25 bags of 2 ft³.
Questions people ask
How much area does a yard of mulch cover?
About 108 ft² at 3" deep, 162 ft² at 2" deep.
How many tons is a yard of gravel?
About 1.4 tons for crushed stone or pea gravel. It ranges from about 1.3 to 1.5 by stone and moisture.
How many bags of mulch in a yard?
13.5 bags of 2 ft³.
How deep should a gravel driveway be?
Usually 4 to 6" of base stone under 2 to 3" of top stone, more on soft ground.
More free calculators
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- Square corner (3-4-5) calculatorThe diagonal that makes a corner 90°, and how far out a corner is.
- Concrete calculatorCubic yards and bags for slabs, footings and round columns.
- Paver and patio calculatorPavers, gravel base and bedding sand for a patio or walk.
- Roof pitch calculatorPitch, angle, rafter length and roofing squares.
- Block wall calculatorCMU block count, courses and mortar for a block wall.
- Slope and grade calculatorDrop over a run, inches per foot, percent grade and degrees.
Built by Northdesk
These calculators are made by Northdesk, construction business software with Dex, an AI assistant, built in.
- Landscaping contractorsMaintenance routes, patio and wall installs, seasonal crews and a yard full of stone.
- Concrete contractorsPours that move with the weather, footings measured off the plans, finishers on the right site at 6 AM, and an inspector who signs in before you pour.
- Construction schedulingThe calendar and crew schedule show who is on which project each day.
Run the day from one desk.
We’ll set Northdesk up around your company: your name, your logo, only what you use. Dex will book you a walkthrough with our team.