Interactive raised bed calculator
Enter bed size. Get soil volume, bags, cost, and a shopping list.
Default example: one 4×8×12 in bed, 10% settling, and 2 ft³ bags. Results update automatically as inputs change.
More planners: mix, containers, spacing, top-off, depth, cost, multi-bed, shapes
Raised Bed Soil & Planting Calculator
4×8 Raised Bed 24 Inches Soil Calculator
Calculate soil volume and bags for a 4×8 raised bed filled 24 inches deep.
Preset: raised bed dimensions
Formula: 4 × 8 × 2 ft = 64 ft³
Worked example: A 4×8 bed at 24 inches deep needs 64 ft³ before settling.
Adjust the live inputs above before copying the shopping list, printing the result, or buying material.
4×8 bed at 24 inches
These rows use one 4×8 bed, 0 in freeboard, 10% settling allowance, and 2 ft³ bags. Change the live calculator for other assumptions.
| Depth | Before settling | With 10% | 2 ft³ bags | Planning note |
|---|---|---|---|---|
| 24 in | 64.00 ft³ | 70.40 ft³ / 2.61 yd³ | 36 | Very deep bed: compare bulk delivery with bags and check whether full-depth premium mix is necessary. |
Quick copy: 24 in: 64 ft³ before settling; 70.4 ft³ with 10% settling; 2.61 yd³; about 36 × 2 ft³ bags.
What to verify
- Measuring outside dimensions instead of inside fill dimensions.
- Forgetting freeboard below the bed rim.
- Buying bags without checking the package volume.
Page-specific notes
- At this volume, bulk soil may be worth comparing with bags.
Disclaimer
BedSoil results are planning estimates for buying and mixing soil. They are not agricultural, engineering, pest, disease, fertilizer, or crop-yield advice. Check product labels, local material quality, drainage, bed construction, climate, and crop variety before purchasing materials.