Square Feet to Cubic Yards
Convert an area in square feet with a given depth to cubic yards.
Formula
yd³ = (area ft² × depth ft) ÷ 27
- 1 cubic yard = 27 cubic feet.
- Depth is entered in inches and converted to feet (÷12).
100 sq ft area, 4 in depth
Inputs
- Area: 100 sq ft
- Depth: 4 in
100 × (4/12) = 33.33 cu ft ÷ 27 = 1.235 cu yd.
Frequently asked questions
Why do I need this conversion?
Concrete, fill dirt, mulch, and aggregates are typically sold in cubic yards. This calculator converts your rectangular area and depth to the units your supplier uses.