Cubic Yard Calculator
Work out a volume in cubic yards — from length, width and depth — with cubic feet and cubic metres alongside.
Cubic yards are how bulk materials are ordered — but the job is measured in feet and inches. This calculator is the bridge: dimensions in, cubic yards out.
For concrete with bags, use the concrete calculator; for pure volume, use this one.
Your results
Enter your measurements and press Calculate.
Quantities are rounded up to whole tiles, planks, boxes or bags, after the wastage allowance. Cost appears only when you enter a price.
Formula
All lengths are converted to a single unit before the calculation: 1 ft = 0.3048 m, 1 in = 25.4 mm, 1 ft² = 0.09290304 m², 1 yd² = 9 ft². Material quantities are rounded up — you cannot buy part of a tile, plank or bag.
How to use this calculator
- Enter the length, width and depth.
- Read the volume in cubic yards, cubic feet and cubic metres.
- Use the Copy results button to copy the answer.
Worked example
| Slab | 10 ft × 10 ft × 4 in deep |
|---|---|
| Cubic feet | 10 × 10 × ⅓ = 33.33 ft³ |
| Cubic yards | 33.33 ÷ 27 = 1.23 yd³ |
| Cubic metres | 33.33 × 0.028316846592 = 0.9439 m³ |
Check it by hand: every step above uses the formula in the box. If your numbers match the example inputs but the calculator gives a different answer, please report it via the contact page.
Frequently asked questions
How many cubic feet are in a cubic yard?
27 ft³. A cubic yard is a 3 ft × 3 ft × 3 ft cube. Divide cubic feet by 27 to get cubic yards — this calculator does it for you.
How do I calculate cubic yards?
Multiply length × width × depth, then divide by 27 (if you measured in feet). A 10 × 10 ft slab, 4 in deep, is 1.23 yd³.
When do I need cubic yards?
For bulk materials ordered by the yard — concrete, topsoil, mulch, gravel. Suppliers quote by the cubic yard (US) or cubic metre (UK/AU); this calculator gives you both.
What is the difference between this and the concrete calculator?
This page is pure volume — no bags, no wastage, no cost. The concrete calculator adds bag counts and wastage for a concrete job.
Related calculators
Estimates only. Results are for planning. Measure twice, confirm box coverage and tile sizes on the packaging you buy, and follow the manufacturer's instructions. See the disclaimer.