Raised Bed Soil Calculator
Raised beds and large pots are filled with bagged soil, sold by the cubic foot or liter. Enter the inside size of each box and this totals the soil you need.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply length, width and depth for one bed to get its volume, then multiply by the number of beds for the total.
Bags are counted by dividing the total by the size of one bag and rounding up. Measure inside the boards, since the wood takes up no room for soil.
Worked example
2 beds of 8 ft by 4 ft at 12 in deep take 64 ft³ of soil, which is 43 bags of the size you entered.
Questions
Should I fill the whole bed with bagged soil?
Many gardeners fill with a mix of bagged soil and compost. Filling a large bed with bagged soil alone can get expensive quickly.
Why do I need an extra bag?
Bags often hold a little less than their label, and soil settles. Rounding up means you do not run out before the last bed.
How deep should a raised bed be?
Around 10 to 12 inches suits many vegetables. Herbs and flowers can use less, and deeper beds give roots more room.
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