Formula and Assumptions
Soil volume = length x width x depth. Bag count = volume / bag size.
Actual conditions, local rates, product labels, and contractor recommendations can change the final quantity or cost.
Example Calculation
An 8 x 4 ft bed at 12 inches deep needs 32 cubic feet of soil.
Tips
- Raised beds settle after watering.
- Mix compost based on plant needs.
- Confirm bag volume before buying.
FAQ
Can I use inches for depth?
Yes, depth is entered in inches.
Does this include compaction?
No, buy a little extra if soil settles.
Can I estimate cubic yards?
Yes, the result includes cubic yards.
Does it work for round beds?
This version is for rectangular beds.