Enter length, width, and depth in feet, inches, yards, or meters to get the volume in cubic yards. One cubic yard is 27 cubic feet — the standard unit for ordering soil, gravel, mulch, and concrete.
You need approximately
3.7 cubic yards
Cubic feet
100 ft³
Cubic yards
3.7 yd³
Cubic meters
2.83 m³
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Field notes
The single most common ordering error is leaving depth in inches — feet × feet × inches gives a number 12 times too big. Convert depth to feet first, every time. When an area is L-shaped or curved, split it into rectangles you can actually measure and add the volumes; guessing an "average" width on an irregular bed is where orders go wrong.
How the cubic yard calculator works
The math behind the tool:
cubic yards = (length × width × depth, all in feet) ÷ 27