Retaining Wall Calculator

Get a first-order block count for segmental retaining wall units and estimate gravel base for a leveling pad under the first course. Enter wall run length, exposed height, nominal block face dimensions, and trench width/depth for the aggregate pad.

Gravel tools: base material calculator.

Segmental retaining wall

Block count uses a simple grid: full blocks only (no deduction for joints). Adjust on site for bond pattern and cuts.

Wall length (run)

ft m in

Wall height

ft m in

Block width (face)

in ft cm m

Block height (face)

in ft cm m

Gravel base (optional)

Base trench width

ft in m

Base trench depth

in ft cm m

Base material density (default 1600 kg/m³)

Enter density manually

kg/m³

Results

Blocks (approx.): 0

Base gravel volume: 0.00 m³

Base gravel weight: 0.00 t

Reference