How to use the cubic yards to square feet calculator
- 1
Enter the cubic yards
Type the volume you have or plan to order, in cubic yards.
- 2
Choose a depth
Enter the installed thickness and pick the depth unit. The depth must be greater than zero.
- 3
Read the coverage
The calculator shows the area covered in square feet, square yards, and square meters.
Formula
Square feet = cubic yards x 324 / depth (in)
One cubic yard is 27 cubic feet, which is 324 square feet at 1 inch deep. Dividing 324 by the depth in inches gives the area one cubic yard covers, so multiplying by your cubic yards gives total coverage.
Worked example
How much area does 5 cubic yards cover at 3 inches deep?
- 1Multiply cubic yards by 324: 5 x 324 = 1,620.
- 2Divide by the depth in inches: 1,620 / 3 = 540.
5 cubic yards covers about 540 square feet at 3 inches deep.
Why coverage needs a depth
A cubic yard is a fixed amount of material, but the area it covers is not fixed. Spread it 1 inch deep and it covers 324 square feet. Pile it 12 inches deep and it covers only 27 square feet. The depth is the missing piece that turns a volume back into an area.
To go the other way and turn a known area and depth into a volume, use the square feet to cubic yards calculator.
Where coverage matters
Estimating area from a delivered volume is useful for jobs such as:
- Checking how far a mulch or compost delivery will spread
- Planning gravel depth so one load covers the driveway
- Confirming a soil order will fill a bed to the right level
- Comparing two depth options for the same amount of material
Shallower versus deeper coverage
Coverage and depth move in opposite directions. Halving the depth doubles the area covered, and doubling the depth halves it. This is why a thin decorative layer stretches much further than a structural base of the same material.
Use the table below to compare common depths at a glance, then fine tune with the calculator.
Cubic Yards Coverage by Depth
Square feet covered for each cubic-yard amount and depth. Values are generated from cubic yards times 324 divided by depth in inches.
| Cubic yards | 1 in | 2 in | 3 in | 4 in | 6 in | 8 in | 12 in |
|---|---|---|---|---|---|---|---|
| 0.5 | 162 sq ft | 81 sq ft | 54 sq ft | 40.5 sq ft | 27 sq ft | 20.25 sq ft | 13.5 sq ft |
| 1 | 324 sq ft | 162 sq ft | 108 sq ft | 81 sq ft | 54 sq ft | 40.5 sq ft | 27 sq ft |
| 1.5 | 486 sq ft | 243 sq ft | 162 sq ft | 121.5 sq ft | 81 sq ft | 60.75 sq ft | 40.5 sq ft |
| 2 | 648 sq ft | 324 sq ft | 216 sq ft | 162 sq ft | 108 sq ft | 81 sq ft | 54 sq ft |
| 3 | 972 sq ft | 486 sq ft | 324 sq ft | 243 sq ft | 162 sq ft | 121.5 sq ft | 81 sq ft |
| 5 | 1,620 sq ft | 810 sq ft | 540 sq ft | 405 sq ft | 270 sq ft | 202.5 sq ft | 135 sq ft |
| 10 | 3,240 sq ft | 1,620 sq ft | 1,080 sq ft | 810 sq ft | 540 sq ft | 405 sq ft | 270 sq ft |
Frequently asked questions
- How many square feet does a cubic yard cover?
- It depends on depth. One cubic yard covers 324 square feet at 1 inch, 108 square feet at 3 inches, and 81 square feet at 4 inches.
- What is the formula for cubic yards to square feet?
- Square feet equals cubic yards times 324 divided by the depth in inches.
- Can I convert cubic yards to square feet without a depth?
- No. A volume covers different areas at different depths, so a depth is required before you can find the area.
- How much area does 10 cubic yards cover?
- At 2 inches deep, 10 cubic yards covers about 1,620 square feet. At 4 inches it covers about 810 square feet. See the table for other depths.
- Why does deeper material cover less area?
- The total volume is fixed, so using more of it per square foot, which is what greater depth means, leaves less to spread, reducing the area covered.
- Are these coverage numbers exact for my site?
- They are exact geometric values. Actual installed coverage can vary with grade, settling, and compaction, so treat them as planning estimates.
- What is the difference between square yards and square feet here?
- Both measure the area covered. There are 9 square feet in a square yard, and the calculator reports both.
Coverage uses the exact relationship that one cubic yard equals 324 square feet at 1 inch deep. Table values are generated from the calculation engine. See the YardCalc calculation methodology for how values are checked.
Results are planning estimates. Last reviewed 2026-06-16.