Raised Bed Volume Calculator

Plan soil purchases confidently for any raised bed. Compare bags, bulk loads, and budget quickly. Adjust for settling and moisture to avoid shortages later.

Calculator
Choose a shape, enter dimensions and fill depth, then calculate adjusted soil volume.
Switching units updates labels and bag logic.
Use custom if you already know bed area.
Multiplies results for identical beds.
Enter plan-view bed area only.
Use soil depth, not bed wall height.
Common range is 5–15% for settling.
Optional planning
These fields estimate bags, costs, and weight.
Leave blank to skip bulk cost.
Imperial uses cu ft; metric uses liters.
Used with bag size to estimate cost.
Optional weight estimate. Varies by moisture.
Reset
Downloads use the most recent calculated results.
Example data table
Bed type Dimensions Fill depth Beds Settling Adjusted volume
Rectangular 8 × 4 (ft) 12 (in) 1 10% ~2.17 cu yd
Rectangular 2.4 × 1.2 (m) 30 (cm) 2 8% ~1.87 m³
Circular 6 (ft) diameter 10 (in) 1 12% ~0.65 cu yd
Examples are rounded for quick planning.
Formula used
First calculate bed area, then multiply by fill depth, then apply settling.
How to use this calculator
  1. Select a unit system that matches your tape measure.
  2. Pick the bed shape and enter the required dimensions.
  3. Enter the soil fill depth you actually plan to add.
  4. Set the number of identical beds to scale totals.
  5. Add a settling allowance so your bed stays full.
  6. Optionally enter bag or bulk rates to estimate costs.
  7. Press Calculate to see results above this form.
  8. Download CSV or PDF for purchasing and records.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.