basic

Retaining Wall Block Calculator

Number of blocks for a wall of a given length and height.

Compute the total number of segmental retaining-wall blocks needed for a given wall length, wall height, and block dimensions, plus the recommended cap-block count.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

ft
ft
in
in

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Courses = ceil(wall_height / block_height). Blocks per course = ceil(wall_length / block_length). Total = courses · per-course + caps.

In depth

Compute the total number of segmental retaining-wall blocks needed for a given wall length, wall height, and block dimensions, plus the recommended cap-block count.