Soil Calculator — Garden Bed Volume & Bags Needed
Cubic Feet
—
Cubic Yards
—
Liters
—
Bags Needed
—
How to Calculate Soil Volume
Rectangular: L x W x D. Circular: pi x r2 x D. Converts between cubic feet, yards, and liters.
Most raised beds need 12 inches of soil. 1 cubic yard = 27 cubic feet, fills a 4x8 bed ~10 inches deep.
Standard bags: 1, 1.5, or 2 cu ft. Bulk soil by the cubic yard is more economical for large projects.
Frequently Asked Questions
How much soil for a 4x8 raised bed?
Filled 12 inches deep: 32 cubic feet (1.2 cubic yards), about 21 bags of 1.5 cu ft soil.
Cubic feet vs cubic yards?
1 cubic yard = 27 cubic feet. Yards are for bulk delivery, feet for bagged products.
Should I fill a raised bed entirely with soil?
Many gardeners fill the bottom third with leaves and compost, then top with garden soil.
How much does garden soil weigh?
About 75-100 lbs per cubic foot. A cubic yard weighs 2,000-2,700 lbs.