Cubic Yards Calculator
Enter a length, a width and a depth in feet and inches and get the cubic yards to order, rounded up once to the supplier's step, with the working shown for an example. An area that is not a rectangle can be drawn with Draw a shape.
Estimates for planning, not professional advice. Read the full notice.
The drawing did not open. Length and width are still here.
Area: shape and size
Skip the drawingDrag a round corner to move it. The small hollow diamond on a side is its curve handle: drag it across the side to curve the side (it is not a corner). To add a corner (a new point), tap the side itself, then choose Add a point here. Tapping a corner or a side opens its actions. Drag empty space to move the view; pinch, or Ctrl and the mouse wheel, to zoom. The keys are listed under Keys.
Keys
- Tab
- next corner; each says how far it is from corner 1
- Arrow keys on a corner
- move it one square; ten with Shift; 1/16 in with Alt
- Delete or Backspace
- remove the corner; its two sides join in one straight side
- + on a corner
- add a corner halfway along the next side
- Arrow keys on the drawing
- move the view; farther with Shift
- + and - on the drawing
- zoom in and out
- 0 on the drawing
- show the whole shape
- Ctrl+Z (Cmd+Z on a Mac)
- undo, except inside a typed field (it keeps its own)
- Ctrl+Shift+Z or Ctrl+Y
- redo
- Escape while dragging
- put it back where it was
- Enter on a corner or side
- go to its actions
- Escape in the actions
- close them and go back to the drawing
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- Area
- 41.67 ft²
- Perimeter
- 31 ft 8 in
- Cut-out edges
No area until the shape is fixed.
Estimate for planning, from what you entered and the product data shown. Check product labels and your supplier before you buy.
Shape: Rectangle Change
Sides
Corners
Cut-outs
Feet and inches, like 12' 6"
Example: a narrow bed
0.5 yd³ to order (0.39 yd³ exact)
- Volume in cubic feet 10.42 ft³
- Cubic yards at the supplier's step 0.5 yd³
Your project
Enter a size to see your total.
Each product is rounded up once for the whole project, so the total can be less than the items bought alone added together. A line counted from a cut layout (sheets, boards or tiles laid out piece by piece) is counted for each item and added.
Shopping list
| Item | Size | Buy |
|---|---|---|
| Material by the cubic yard | 1 yd³ | 0.5 yd³ |
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Worked example: a narrow bed
Show the working
- Area 12 ft 6 in × 3 ft 4 in = 41.67 ft²
- Volume at the depth 41.666667 ft² × 3 in = 10.42 ft³
- Add the waste allowance, once 10.416667 ft³ + 0 % waste = 10.42 ft³
- Cubic yards: divide by the cubic feet in a yard 10.416667 ft³ ÷ 27 ft³ in a yd³ = 0.39 yd³
- Round up once, to the supplier's step 0.39 yd³ = 0.5 yd³
Assumptions
The figures behind the example. Sourced figures link to their source below; a default is a starting value to check against your label or supplier.
| Assumption | Value | Details and changes |
|---|---|---|
| Landscape waste or overage | 0% | |
| Default No silent overage. Check your label or supplier. | ||
| Supplier's smallest yard step | 0.5 yd³ | |
| Default Suppliers sell bulk in steps. Check your label or supplier. | ||
Feet and inches, like 12' 6"
By shape
Volume in cubic feet and cubic yards for common shapes
| Shape and size | Cubic feet | Cubic yards | Cubic yards at the step |
|---|---|---|---|
| Triangle 10 ft base, 6 ft high × 3 in | 7.5 ft³ | 0.28 yd³ | 0.5 yd³ |
| Tiny square 2 ft × 2 ft × 2 in | 0.67 ft³ | 0.02 yd³ | 0.5 yd³ |
| Curved edge, 10 ft × 4 ft with an arc of 8 ft radius × 3 in | 13 ft³ | 0.48 yd³ | 0.5 yd³ |
| Round, 8 ft across × 2 in | 8.38 ft³ | 0.31 yd³ | 0.5 yd³ |
| Box 7 ft × 14 ft × 2 ft | 196 ft³ | 7.26 yd³ | 7.5 yd³ |
Each shape's area comes from that shape's formula, and the area is multiplied by the depth. The calculator takes a length, a width and a depth, or a shape you draw and a depth; these rows show other shapes worked out the same way. The step column uses the supplier's step in the assumptions above.
Questions
How do I convert square feet to cubic yards?
Square feet are an area, so they need a depth. Multiply the area by the depth in feet to get cubic feet, then divide by the cubic feet in one cubic yard. The calculator converts the depth for you, and the worked example shows each step.
How do I work in feet and inches?
Type each size in feet and inches as you measured it, with the digits and the unit marks, and the calculator reads the feet and the inches together. A depth in inches is converted to feet before the volume is worked out.
How do I change cubic feet to cubic yards?
Divide the cubic feet by the number of cubic feet in one cubic yard, which is shown in the working above. The result is the exact cubic yards, and the supplier's step is applied only once, at the end.