Raised garden bed soil calculator
Figure out the fill before the soil bags start piling up by the gate.
Enter the bed size, pick the bag size you buy locally, and keep the first shopping trip close to what the bed actually needs.
Volume32.0 cu ft
Bulk order1.19 cu yd
Bag count22 bags
Current bed8 x 4 ft bed at 12 in depth
8 x 4 x 12 in
About 32 cubic feet. This is the common starter bed that often surprises people at checkout.
12 x 4 x 12 in
About 48 cubic feet. A bulk-yard delivery starts making more sense here than stacked bag runs.
Shallow top-up
Refreshing a settled bed with 2 or 3 inches takes far less material than a full new fill.
Soil calculator for raised garden beds
Bag counts and yard totals for the common bed shapes.
Raised bed garden soil calculator
Reference table for standard raised bed sizes.
Calculate soil for raised garden bed
Quick formula and the depth conversions most people need.
Raised garden bed soil mix calculator
Split total volume into topsoil, compost, and aeration material.
How to calculate soil for raised garden bed
Measure once, convert once, and avoid buying three extra bags.