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Concrete Block Calculator

Construction
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Calculates the number of concrete blocks and estimated costs for building a wall, based on dimensions and block size.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Wall Length (feet), Wall Height (feet), Block Length (inches), Block Height (inches), and Cost per Block ($) in the units shown.

Step 2

Read Block Height (ft), Block Length (ft), Wall Area (sq ft), Rows of Blocks, Blocks per Row, Total Blocks Needed, and Estimated Total Cost in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Small Wall

Wall Length (feet): 10 ft; Wall Height (feet): 4 ft; Block Length (inches): 16 in; Block Height (inches): 8 in; Cost per Block ($): 2.5 $

Block Height (ft): 0.6666666667 ft; Block Length (ft): 1.333333333 ft; Wall Area (sq ft): 40 sq ft; Rows of Blocks: 6 rows; Blocks per Row: 7.5 blocks; Total Blocks Needed: 45 blocks; Estimated Total Cost: 112.5 $

Standard Wall

Wall Length (feet): 20 ft; Wall Height (feet): 8 ft; Block Length (inches): 16 in; Block Height (inches): 8 in; Cost per Block ($): 2.5 $

Block Height (ft): 0.6666666667 ft; Block Length (ft): 1.333333333 ft; Wall Area (sq ft): 160 sq ft; Rows of Blocks: 12 rows; Blocks per Row: 15 blocks; Total Blocks Needed: 180 blocks; Estimated Total Cost: 450 $

Large Wall

Wall Length (feet): 30 ft; Wall Height (feet): 10 ft; Block Length (inches): 16 in; Block Height (inches): 8 in; Cost per Block ($): 2.5 $

Block Height (ft): 0.6666666667 ft; Block Length (ft): 1.333333333 ft; Wall Area (sq ft): 300 sq ft; Rows of Blocks: 15 rows; Blocks per Row: 22.5 blocks; Total Blocks Needed: 337.5 blocks; Estimated Total Cost: 843.75 $

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