Dirt calculator · cubic yards
Soil Calculator
How much soil do you need? Pick the soil, measure each area and get the cubic yards.
1 · Material
2 · Two quick choices: depth, then size
2a · Pick a depthLength × width in feet. Add as many areas as you need; we add them up.
Recommended order
6 yd³
of Topsoil
covers 400 sq ft at 4″ · 1 dump truck
400 sq ft × 4 in ÷ 12 ÷ 27 = 4.94 yd³. Plus 15% for settling and spreading, rounded up to a whole yd³.
3 · Get your delivered quote
One cubic yard of topsoil
- = 27 cubic feet
- covers 81 sq ft at 4″
- weighs about 2200 lb
- a full truck is about 18 yd³
About this material: Topsoil →
How much does a yard of soil cover?
Cubic yards = area (sq ft) × depth (in) ÷ 12 ÷ 27. Tons = cubic yards × the material’s density. The calculator then adds the buffer for compaction and spreading and rounds up. Tons use our catalog densities: red clay 1.3 t/yd³; baseball clay 1.3 t/yd³.
Swipe the table sideways →
| Material | Depth | Used for | Coverage | Per 100 sq ft |
|---|---|---|---|---|
| Topsoil | 2″ | Fill low spots and level a lawn. | 162 sq ft per yd³ | 0.62 yd³ |
| Topsoil | 4″ | New lawn or sod. (typical) | 81 sq ft per yd³ | 1.23 yd³ |
| Topsoil | 6″ | New planting bed. | 54 sq ft per yd³ | 1.85 yd³ |
| Garden Soil Mix | 6″ | In-ground beds over loosened soil. | 54 sq ft per yd³ | 1.85 yd³ |
| Garden Soil Mix | 12″ | Most vegetables. (typical) | 27 sq ft per yd³ | 3.7 yd³ |
| Garden Soil Mix | 18″ | Tomatoes and root crops. | 18 sq ft per yd³ | 5.56 yd³ |
| Compost | ½″ | Top-dress a lawn. | 648 sq ft per yd³ | 0.15 yd³ |
| Compost | 1″ | Top-dress beds. (typical) | 324 sq ft per yd³ | 0.31 yd³ |
| Compost | 2″ | Mix into new beds. | 162 sq ft per yd³ | 0.62 yd³ |
| Fill Dirt | 6″ | One compacted 6″ lift. | 54 sq ft per yd³ | 1.85 yd³ |
| Fill Dirt | 12″ | Most low spots and grading. (typical) | 27 sq ft per yd³ | 3.7 yd³ |
| Fill Dirt | 2 ft | Deep fill, placed in 6–8″ lifts. | 14 sq ft per yd³ | 7.41 yd³ |
| Red Clay | 4″ | Thin compacted cap. | 62 sq ft per ton | 1.6 tons |
| Red Clay | 6″ | Compacted base, in 6–8″ layers. (typical) | 42 sq ft per ton | 2.41 tons |
| Red Clay | 12″ | Pond liners need 12″ or more. | 21 sq ft per ton | 4.81 tons |
| Baseball Clay | 1″ | Resurface worn areas. | 249 sq ft per ton | 0.4 tons |
| Baseball Clay | 2″ | Infield top layer. (typical) | 125 sq ft per ton | 0.8 tons |
| Baseball Clay | 4″ | Rebuild a mound or plate area. | 62 sq ft per ton | 1.6 tons |
Before the buffer. Updated November 2026
How much soil for common projects
Swipe the table sideways →
| Project | Depth | Area | Estimate |
|---|---|---|---|
| New lawn 1,000 sq ft topsoil | 4″ | 1,000 sq ft | ~13 cubic yards |
| Raised bed 4 ft × 8 ft garden mix | 12″ | 32 sq ft | ~1.2 cubic yards |
| Low-spot fill 500 sq ft | 6″ | 500 sq ft | ~9 cubic yards fill dirt |
| Top dressing 2,000 sq ft | 1/2″ | 2,000 sq ft | ~3 cubic yards screened topsoil |
| Equestrian arena footing refresh | 3″ | 5,000 sq ft | ~46 cubic yards red clay |
Before the buffer. Measure your own areas above for an order quantity.
Which soil: topsoil, garden mix, compost, fill dirt or clay?
Delivered by dump truck. “From” prices are per yd³ on a full truck, delivery included; the second line is the smallest load.
Topsoil →Screened topsoil for lawns, sod and leveling.From $46.03/yd³ on a full truck2 yd³ from $432.68 delivered
Garden Soil Mix →A blended mix for raised beds and vegetables.From $56.29/yd³ on a full truck2 yd³ from $456.24 delivered
Compost →Organic matter to top-dress beds and lawns.From $46.03/yd³ on a full truck2 yd³ from $432.68 delivered
Fill Dirt →Bulk fill for grading and low spots.From $28.07/yd³ on a full truck2 yd³ from $391.48 delivered
Red Clay →Compactable clay for bases and pond liners.From $59.39/ton on a full truck2 tons from $603.40 delivered
Baseball Clay →Infield and mound clay for ballfields.From $72.42/ton on a full truck2 tons from $500.38 deliveredSoil mistakes to avoid
Confusing topsoil with fill dirt
Topsoil grows plants. Fill dirt is structural subsoil with no organic matter. Buying the wrong one wastes money — fill dirt costs less per yard and does not support a lawn.
Soil layer too shallow
A 1-inch topsoil layer over compacted subgrade fails. Plan 4–6 inches for lawns and 8–12 inches for beds so roots have room to establish.
Pure compost in beds
Compost holds too much water and can burn roots. Cap it at 10–20% of the fill volume. The rest should be garden soil mix or topsoil.
Skipping subgrade prep
Soil on top of compacted construction subsoil drains poorly and stunts roots. Loosen the top 4 inches of subgrade before spreading topsoil.
Forgetting settlement
Soil settles 10–20% in the first month after watering. Order to your finished grade plus the buffer, not the strict math.
Soil calculator questions
Need another material? All calculators →
Know how much soil you need? Get your delivered quote.
We’ll quote your 6 yd³ of topsoil, delivery included.
