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 10 Inches Soil Calculator
Preset calculator for a 4×8 raised bed filled 10 inches deep.
Preset: raised bed dimensions
Formula: 4 × 8 × 10/12 ft = 26.67 ft³
Worked example: A 4×8×10 in raised bed needs about 26.67 ft³ before settling.
Adjust the live inputs above before copying the shopping list, printing the result, or buying material.
4×8 bed at 10 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 |
|---|---|---|---|---|
| 10 in | 26.67 ft³ | 29.33 ft³ / 1.09 yd³ | 15 | Common raised-bed depth: a practical planning depth for many vegetables when soil and watering are managed well. |
Quick copy: 10 in: 26.67 ft³ before settling; 29.33 ft³ with 10% settling; 1.09 yd³; about 15 × 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
- Useful for shorter metal beds or partially filled beds.
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.