Square Feet to Cubic Yards Calculator
Convert square footage to cubic yards quickly and accurately. Enter your area in square feet and the desired depth — choose from inches, feet, or centimeters. Get the volume in cubic feet, cubic yards, estimated material weight, and even approximate cost. Essential for ordering concrete, topsoil, gravel, mulch, and sand.
Total square footage of the area
Depth in the unit selected below
How do I convert square feet to cubic yards?
To convert square feet to cubic yards, multiply the area (sq ft) by the depth (in feet), then divide by 27 (since 1 cubic yard = 27 cubic feet). Formula: Cubic Yards = (Area in sq ft × Depth in ft) ÷ 27. If your depth is in inches, first convert to feet by dividing by 12. For example: 500 sq ft at 4 inches deep = (500 × (4÷12)) ÷ 27 = 6.17 cubic yards. This conversion is essential for ordering concrete, soil, gravel, sand, or mulch.
How many cubic yards are in 100 square feet?
It depends on the depth. At 1 inch deep: 100 × (1/12) ÷ 27 = 0.31 cubic yards. At 2 inches: 0.62 cubic yards. At 4 inches: 1.23 cubic yards. At 6 inches: 1.85 cubic yards. At 12 inches (1 foot): 3.70 cubic yards. Always specify the depth when ordering materials — cost varies directly with volume, not area.
When do I need to convert square feet to cubic yards?
Common scenarios: Ordering concrete for a slab (measured in cubic yards), buying topsoil or fill dirt for landscaping, ordering gravel or crushed stone for driveways and pathways, purchasing mulch for garden beds, calculating sand needed for a paver base. Suppliers typically sell bulk materials by the cubic yard. Knowing the conversion prevents over-ordering (wasted money) or under-ordering (project delays).
What is the difference between a square foot and a cubic yard?
A square foot measures area (length × width, two dimensions). A cubic yard measures volume (length × width × height, three dimensions). One cubic yard = 27 cubic feet = a cube 3 feet on each side. To visualize: a cubic yard of concrete fills a 3×3×3 foot space, enough for about 81 square feet at 4 inches thick. Square footage tells you how much ground to cover; cubic yards tell you how much material you need to cover it at a given depth.