SPECIFICATION: RAISED GARDEN BED & VEGETABLE PATCH

4×8 Raised Garden Bed Soil Calculator (10" Depth)

A 4×8 foot raised planter box measures 32 square feet. Filling it to a 10-inch soil depth requires 26.7 net cubic feet. Because garden compost and loose loam settle approximately 18% after initial watering, you need 1.15 cubic yards (16 bags of 2 cu ft soil blend).

Bed Dimensions & Material

Adjust square footage or target layer thickness.

32 SQ FT

Nutrient-dense humified organic matter for soil conditioning and vegetable garden beds.

LAYER DEPTH10" Depth
Retail Bag Size
Weed Barrier Fabric
Landscape Soil & Mulch Strata Schematic
Organic SOIL8' × 4' (10" Depth)
Soil and mulch strata cross section for Organic Mushroom / Leaf Compost Blend10" DEPTH10" ORGANIC MUSHROOM / LEAF COMPOST BLEND+18% Settling CompensationNATIVE SUBSOIL (SCARIFIED SUBGRADE)GARDEN BED SPAN: 8 FT × 4 FT (32 SQ FT)
Total Order Volume:1.27 cu yds
Retail Bag Yield:18 Bags
Estimated Weight:0.9 Tons
Settling Factor:+18%
Dual Delivery Comparison
DIY STORE PICKUPRETAIL BAGS
18 Bags
2 cu ft bags (~1 pallets)
Total Weight:1,778 lbs
Pickup Truck Trips:1 Trips
BULK DUMP TRUCKCOMMERCIAL HAULER
1.27 cu yds
1 Single-Axle Dump Truckload(s)
Tonnage:0.9 Tons
Settling Allowance:+18%
Frequently Asked Questions

How many bags of soil fill a 4x8 raised bed at 10 inches deep?

You need approximately 16 bags of 2.0 cu ft soil or organic compost mix to account for water settlement.

What soil mix ratio is best for raised vegetable beds?

The recommended trade blend is 50% screened topsoil, 30% organic compost or well-rotted manure, and 20% coarse aeration material (perlite, vermiculite, or coconut coir).