Construction calculator
Square Feet to Cubic Yards Calculator
Estimate cubic yards from area and depth for mulch, topsoil, gravel, compost, concrete, and other project materials.
Material volume
Square Feet to Cubic Yards
Estimate how many cubic yards of material you need when you know area and depth.
Selected depth
3 inches
0.25 feet deep
Estimated material volume
0.926 cu yd
Formula: square feet x depth in feet / 27. Add extra for compaction, waste, and uneven ground.
Cubic feet
25 cu ft
Before waste allowance
Depth in feet
0.25
Used in the volume formula
With 10% extra
1.019 cu yd
Common planning buffer
Formula
cubic yards = square feet x depth in feet / 27
Use the depth your material will be spread. For example, 3 inches is 0.25 feet.
Example Conversions
| Area | Depth | Cubic yards |
|---|---|---|
| 100 sq ft | 3 in | 0.926 cu yd |
| 500 sq ft | 3 in | 4.63 cu yd |
| 100 sq ft | 4 in | 1.235 cu yd |
| 200 sq ft | 6 in | 3.704 cu yd |