Yard Size Calculator
Enter the length and width of the area, how deep you want the material and what it is. The calculator gives cubic yards, cubic metres, the weight and how many bags you would need.
- Cubic yards and m³
- Mulch to concrete
- Weight and bags
For feet, enter depth in inches. For metres, enter depth in centimetres.
Bulk landscape materials are sold by the cubic yard. A cubic yard is a cube 3 feet on each side, 27 cubic feet. Multiply length by width by depth in feet and divide by 27. One cubic yard of mulch covers about 100 square feet at 3 inches deep.
Cubic yard chart
Per 100 square feet. Search for a depth.
| Depth (in) | Cubic yards | Cubic feet | 2 cu ft bags |
|---|---|---|---|
| 1 | 0.31 | 8.3 | 5 |
| 2 | 0.62 | 16.7 | 9 |
| 3 | 0.93 | 25 | 13 |
| 4 | 1.23 | 33.3 | 17 |
| 6 | 1.85 | 50 | 25 |
| 12 | 3.7 | 100 | 50 |
Multiply by your area in hundreds of square feet. A 20 × 10 ft bed is 2 × the figures shown.
Depth and volume
A 10 × 10 ft bed. Slide the depth.
The drawing shows the bed as a slab. Depth matters more than people expect: going from 2 to 3 inches adds 50%.
How to work out cubic yards
Length × width × depth. Step through it.
Measure the area
Length and width in feet.
For round beds, use 3.14 × radius² for the area, then multiply by depth.
Mulch, topsoil or gravel
Typical depths. Compare them.
Keeps weeds down and moisture in.
For new lawns and raised beds.
Paths and driveways.
Heavy materials like gravel can overload a pickup. Check the weight before collecting.
Before ordering
Delivery tips. Tick each item.
Tick each item as you go.
Bulk delivery is usually cheaper than bags above about 2 cubic yards.
What you get
Order quantities. Each tile explains one result.
Bulk order.
Metric.
Tons and tonnes.
2 cu ft bags.
10% more.
Weights are in US short tons per cubic yard. Wet material can weigh 20% more.
Frequently Asked Questions
No question matches that search.
How do I calculate cubic yards?
Length × width × depth in feet, then divide by 27.
How much area does a cubic yard of mulch cover?
About 100 ft² at 3 inches, or 160 ft² at 2 inches.
How many bags of mulch in a yard?
About 13.5 bags of 2 cubic feet.
How much does a cubic yard of gravel weigh?
About 1.4 US tons.
How much topsoil for a 10 × 10 ft area?
About 1.2 cubic yards at 4 inches deep.
How do I convert cubic yards to cubic metres?
Multiply by 0.765.
How deep should mulch be?
2 to 4 inches.
Order the right amount
Measure the area, choose the depth and get cubic yards, weight and bags. Add a little extra and your project will not run short halfway through.
More size calculators
Each one has its own calculator, worked examples and answers to common questions.