Rubber Mulch Calculator
Enter the size of the area and a depth and get the rubber mulch as a volume, then as pounds and bags from the weight on your product's label; the starting weights are an example only.
A ready-made setup of the Mulch Calculator.
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
The drawing did not load. Check your connection and try again.
- Area
- 100 ft²
- Perimeter
- 40 ft
- 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 rubber mulch area
19 Rubber mulch bag
- Volume in the area 25 ft³
- Cubic yards to order 0.93 yd³
- Cubic yards at the supplier's step 1 yd³
- Pounds, from the example weight 750 lb
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 |
|---|---|---|
| Rubber mulch by the bag | Rubber mulch bag | 19 |
Save on this device
Saved projects
No saved projects yet.
Worked example: a rubber mulch area
Show the working
- Area 10 ft × 10 ft = 100 ft²
- Volume at the depth 100 ft² × 3 in = 25 ft³
- Add the waste allowance, once 25 ft³ + 0 % waste = 25 ft³
- Cubic yards: divide by the cubic feet in a yard 25 ft³ ÷ 27 ft³ in a yd³ = 0.93 yd³
- Pounds: multiply by the weight of a cubic foot 25 ft³ × 30 pcf = 750 lb
- Bags: divide by the bag weight, round up once 750 lb ÷ 40 lb = 19 rubber mulch bags
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"
Rubber mulch volume by area and depth
Cubic feet of rubber mulch for four area sizes at four depths, before any waste allowance
| Area | 2 in deep | 3 in deep | 4 in deep | 6 in deep |
|---|---|---|---|---|
| 100 ft² | 16.67 ft³ | 25 ft³ | 33.33 ft³ | 50 ft³ |
| 200 ft² | 33.33 ft³ | 50 ft³ | 66.67 ft³ | 100 ft³ |
| 500 ft² | 83.33 ft³ | 125 ft³ | 166.67 ft³ | 250 ft³ |
| 1,000 ft² | 166.67 ft³ | 250 ft³ | 333.33 ft³ | 500 ft³ |
Volume only: pounds follow from the weight you enter, because no source gives a weight for rubber mulch.
What two thousand pounds of rubber mulch covers
Area covered by two thousand pounds of rubber mulch at four depths, at the example weight per cubic foot
| Depth | Area covered |
|---|---|
| 2 in | 400 ft² |
| 3 in | 266.67 ft² |
| 4 in | 200 ft² |
| 6 in | 133.33 ft² |
This uses the example weight in the starting fields. Your product's weight changes every row.
Questions
How much rubber mulch do I need for a playground?
Enter the area and the depth you will lay; the calculator gives the volume first, and the pounds and bags from the weights you type. The depth for a playground is your own figure to set.
How much area does two thousand pounds of rubber mulch cover?
The second table works it out at the example weight and four depths. Replace the weight with your product's and the same arithmetic holds.
Why are the weights an example only?
No source in this site gives a weight for rubber mulch or its bags. The starting values only show how pounds and bags are worked out, and your label's weights replace them.