Enter length, width, and depth to calculate volume in cubic yards — the number you need when ordering mulch, gravel, soil, concrete, or any bulk material.
The Square Yards Calculator with Depth is a tool used to quickly calculate measurements, conversions, and estimates so you can plan materials and project decisions with confidence.
Cubic Yards = (Length ft × Width ft × Depth ft) ÷ 27. Or in yard units: Length yd × Width yd × Depth yd = Cubic yards directly.
Area = 200 ft² = 22.2 yd². Volume = 200 × 0.25 = 50 ft³ ÷ 27 = 1.85 cubic yards.
Area = 1,500 ft² = 166.7 yd². Volume = 1,500 × 0.5 = 750 ft³ ÷ 27 = 27.78 cubic yards.
At 3 inches deep, 1 cubic yard covers about 108 square feet (12 yd²). At 6 inches deep, 1 cubic yard covers 54 square feet (6 yd²). At 12 inches, it covers just 27 square feet (3 yd²).
Common areas × depths.
| Area (ft²) | 2" deep | 4" deep | 6" deep | 12" deep |
|---|
yd² × depth (in yards) = yd³. For depth in inches: yd² × (inches ÷ 36).
Square yards = 2D area. Cubic yards = 3D volume. Add depth to convert from area to volume.
At 1": 324 ft². At 2": 162 ft². At 3": 108 ft². At 4": 81 ft². At 6": 54 ft². At 12": 27 ft².
100 × (3/36) = 8.33 cubic yards.
When ordering bulk materials sold by cubic yard: mulch, gravel, topsoil, sand, concrete, asphalt.