Raised Bed Soil Calculator — Embeddable Widget

Calculate Your Raised Bed Soil

Common bed sizes

Select a size to auto-fill length & width, or enter custom dimensions below.

Units

Length (ft)

Width (ft)

Fill depth (in)

8–12″ is typical.

Bag size

The math:

Cubic Feet = Length × Width × (Depth ÷ 12)

Cubic Yards = Cubic Feet ÷ 27

Bags = ⌈ Cubic Feet ÷ Bag Size ⌉ · Weight ≈ Cubic Feet × 53.3 lbs

You need approximately

26.7

cubic feet of soil

(0.99 cu yd)

That's about

~18

1.5 cu ft bags

Estimated weight

~1,422 lbs

Based on ~40 lbs per 0.75 cu ft bag. Varies with soil moisture and mix.

For 32 sq ft at 10″ deep. Add 10–15% for settling.

Bag count comparison
Bag size	Bags needed	Notes
1.5 cu ft bag	~18	Common at hardware stores
2 cu ft bag	~14	Fewer bags, heavier to carry

Soil volume unit conversions
1 unit	Cubic feet	Cubic yards	1.5 cu ft bags
1 cubic yard	27	1	18
1.5 cu ft bag	1.5	0.056	1
2 cu ft bag	2	0.074	1.33