Topsoil Calculator
Sections
Add one section for each part of your site. Each has its own shape and depth. Tick "Subtract" for areas that need no soil.
Result
| Volume | |
| Other units | |
| Area | |
| Weight | |
| Truckloads | |
| Bags | |
| Cost, bulk | — |
| Cost, bags | — |
Weights are estimates and change with moisture. Bulk delivery is usually cheaper than bags.
Dirt and topsoil calculator FAQ
How does this dirt calculator work?
Enter the length, width and depth of each area. The calculator multiplies them to get the volume, adds your allowance for waste, settling and compaction, then shows the result in cubic yards or cubic metres, along with weight, truckloads, bags and cost. Add a section for each separate area, and tick Subtract for ponds, paths or buildings.
How much dirt do I need?
Use this how much dirt do I need calculator by entering the area and the depth you want to fill. By hand, length x width x depth in feet divided by 27 gives cubic yards. For example, a 10 ft x 10 ft area filled 6 inches deep is 10 x 10 x 0.5 = 50 cubic feet, or about 1.85 cubic yards. In metres, length x width x depth gives cubic metres.
How much fill dirt do I need?
Measure the area and the depth of the hole or low spot, then enter them in the fill dirt calculator. If the fill will be compacted in layers, add 15 to 25 percent in the compaction box, because loose dirt shrinks when it is packed down. Fill dirt is usually heavier than topsoil, so choose the heavy or custom density for a better weight and truckload estimate.
What is the difference between fill dirt and topsoil?
Fill dirt is usually subsoil used to raise or level ground and to fill holes. It has little organic matter, so it is not meant for growing plants. Topsoil is the darker, organic-rich layer used for lawns, gardens and planting beds. A common approach is to level with fill dirt and finish with a layer of topsoil.
How do I use the dirt calculator in yards?
Choose feet or yards for the length and width and inches for the depth. The result appears in cubic yards, and one cubic yard equals 27 cubic feet or about 0.765 cubic metres. You can switch any measurement between feet, inches, yards, metres and centimetres, so you can mix units.
How many yards of topsoil do I need?
One cubic yard of topsoil covers about 324 square feet at 1 inch deep, 108 square feet at 3 inches deep, and 54 square feet at 6 inches deep. For your own job, enter the size and depth in this top soil calculator and it gives the cubic yards directly. Suppliers usually sell topsoil by the cubic yard in the US, and by the tonne or cubic metre in the UK.
How do I use the top soil calculator for a raised bed?
Measure the inside length, width and soil depth of the bed. A 4 ft x 8 ft raised bed filled 12 inches deep needs 32 cubic feet, about 1.2 cubic yards. A 1.2 m x 2.4 m bed filled 30 cm deep needs about 0.86 cubic metres. Use one section per bed, or the Quantity box for identical beds, and add a little extra for settling. Many gardeners fill beds with a mix of topsoil and compost rather than topsoil alone.
How much extra should I order?
Order about 10 percent extra for waste and settling on most jobs. Use 15 to 25 percent for compaction if the soil will be rolled or packed in layers, and allow more again for uneven or sloping ground. Ordering a little too much is usually cheaper than paying for a second delivery.
How much does a cubic yard of topsoil weigh, and how many truckloads is that?
Topsoil weighs roughly 2,000 to 2,400 pounds per cubic yard, which is about 1.2 to 1.4 tonnes per cubic metre, depending on moisture and type. Truck sizes vary widely, from small tippers carrying a few cubic yards to large trucks carrying 18 or more, so ask your supplier for the real capacity. Enter your truck size in the calculator to see how many loads you need.
Can I calculate an irregular shaped area?
Yes. Split the area into simple shapes such as rectangles, circles and triangles, add a section for each, and the calculator adds them together. For a pond, path or building inside the area, add it as a section and tick Subtract. Each section can have its own depth.