FREE GARDEN CALCULATOR
Raised Garden Bed Calculator.
Calculate fill volume for a raised bed.
01 / YOUR MEASUREMENTSUS CUSTOMARY UNITS
02 / YOUR ESTIMATE
Fill in your measurements and hit calculate to see your estimate here.
Planning estimate only. Verify actual quantities, product labels and site conditions before purchasing.
GOOD TO KNOW
How much fill does a raised bed need?
Calculate the interior dimensions, not the outside frame. Depth should reflect how much of the bed you actually plan to fill. Allow for settling if needed.
Example calculation
An 8 × 4 ft bed filled 12 inches deep needs 32 cubic feet before any extra allowance.
Tips for a better estimate
- Measure the actual usable space, not just the outer boundary.
- Double-check units and product packaging before ordering.
- Round purchases up where appropriate to avoid running short.