Square Footage to Cubic Yards Calculator. Square Footage to Cubic Yards Calculator: Convert square footage to cubic yards for mulch, topsoil, gravel, sand, and concrete. Enter area and depth to.

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Square Footage to Cubic Yards Calculator — Volume

Square Footage to Cubic Yards Calculator: Convert square footage to cubic yards for mulch, topsoil, gravel, sand, and concrete. Enter area and depth to

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Material Waste FactorOptional

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1 ft (12 in) 1 ft 1 ft² = 144 in²

Square Feet to Cubic Yards Calculator — Volume for Concrete, Mulch, and Gravel

Cubic yards is the standard ordering unit for concrete, mulch, topsoil, compost, gravel, crushed stone, sand, fill dirt, and most bulk landscape materials. Suppliers cannot convert your square footage to cubic yards for you — they need a volume. You must calculate the area, apply the material depth, and convert. Getting this wrong results in one of two costly outcomes: a short concrete pour that forces an emergency second delivery with a minimum-charge fee, or a massive pile of surplus gravel in the driveway that the delivery truck cannot take back.

Formula: Cubic Yards = (Length ft × Width ft × Depth ft) ÷ 27. Convert depth from inches to feet by dividing by 12. This calculator accepts area in square feet and depth in inches or feet, then outputs cubic yards automatically.

3 ft = 1 yd3 ft3 ft1 Cubic Yard= 27 cubic feet

Depth to Volume: Quick Reference

  • 1" deep × 1,000 sq ft: 3.09 cubic yards
  • 2" deep × 1,000 sq ft: 6.17 cubic yards
  • 3" deep × 1,000 sq ft: 9.26 cubic yards
  • 4" deep × 1,000 sq ft: 12.35 cubic yards
  • 4" deep × 100 sq ft: 1.23 cubic yards (small concrete slab)
  • 6" deep × 400 sq ft (driveway): 7.41 cubic yards
  • 12" deep × 500 sq ft (raised bed fill): 18.52 cubic yards
1" deep3.09cu ydper1,000sq ft3" deep9.26cu yd6" deep18.52Depth doubles = volume doubles

Common Material Depths and Recommended Volumes

  • Mulch (weed suppression): 2–3 inches recommended; use 2" for existing beds, 3" for new beds
  • Topsoil (lawn overseeding topdress): 0.25"–0.5" application = 0.77–1.54 cu yd per 1,000 sq ft
  • Topsoil (new lawn from scratch): 4"–6" = 12–18.5 cu yd per 1,000 sq ft
  • Compost (garden bed amendment): 2"–4" tilled in
  • Pea gravel (path or play area): 2"–3" = 6–9 cu yd per 1,000 sq ft
  • Crushed stone (driveway): 4"–6" base = 12–18.5 cu yd per 1,000 sq ft
  • Concrete (patio slab): 4" = 12.35 cu yd per 1,000 sq ft
  • Sand (under pavers): 1"–2" bedding layer

Bulk Delivery Minimums and Cost Efficiency

Most bulk material suppliers have minimum delivery quantities of 2–5 cubic yards. If your project needs less, it may be more economical to buy bagged materials. One cubic yard of mulch equals approximately 13 bags of 2 cubic foot mulch. One cubic yard of topsoil equals approximately 27 bags of 40 lb topsoil. Break-even is typically around 2 cubic yards — above that, bulk delivery is almost always cheaper per cubic yard than bagged product.

Related tools: concrete calculator · landscaping calculator · lawn calculator · pool calculator

Splitting Large Orders: Bulk vs. Bagged Economics

For projects between 1 and 4 cubic yards, compare bulk delivery against bagged material costs before ordering. One cubic yard of premium hardwood mulch from a landscape supply company averages $35–$75 delivered (minimum order). Thirteen bags of 2 cu ft mulch from a home centre at $4.50 per bag = $58.50 for the same cubic yard — competitive, and you can return unopened bags. At 2 cubic yards, bulk becomes cheaper: $70–$150 delivered vs. $117 in bags. At 3 cubic yards and above, bulk delivery is almost always more economical. The break-even point shifts based on delivery fees (which often have minimums of $75–$150 for orders under 5 yards), local retail pricing, and whether you can handle the labour of unloading a bulk delivery. Calculate your cubic yards needed first, then run both scenarios before ordering.

Bulk delivery3 cu yd≈ $150 totalincl. deliveryBagged (2 cu ft)40 bags≈ $180 totalno delivery fee≥ 3 cu yd → bulk is usually cheaper

How It Works

1

Select Shape

Choose from 13 shapes including rooms, walls, circles, triangles, and more.

2

Enter Dimensions

Input measurements in any unit. Add quantity, waste factor, and material price.

3

Get Results

View area in ft², in², yd², m², acres plus cost estimate — all at once.

Frequently Asked Questions

Square footage is a 2D measurement and cubic yards are 3D, so you need a depth. Multiply the area (sq ft) by the depth (ft), divide by 27 (cu ft per cu yd). Example: 500 sq ft × 0.5 ft deep = 250 cu ft ÷ 27 = 9.26 cubic yards.
Calculate the area in square feet, multiply by the slab thickness in feet (e.g., 4 inches = 0.333 ft), and divide by 27. For 500 sq ft with a 4-inch slab: 500 × 0.333 = 166.5 cu ft ÷ 27 = 6.17 cubic yards. Add 10% for waste.
Calculate the area in square feet, multiply by the desired depth in feet (3 inches = 0.25 ft), and divide by 27. For 200 sq ft with 3 inches of mulch: 200 × 0.25 = 50 cu ft ÷ 27 = 1.85 cubic yards.
It depends on the depth. One cubic yard (27 cu ft) covers: 324 sq ft at 1 inch deep, 108 sq ft at 3 inches deep, 81 sq ft at 4 inches deep, and 54 sq ft at 6 inches deep.
Square footage measures flat area (length × width) — used for flooring, painting, sod. Cubic yardage measures volume (length × width × depth ÷ 27) — used for bulk materials like concrete, gravel, soil, and mulch.
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