Construction
Retaining Wall Block Calculator
Wall length, height, and block size give block count and cap stones.
Wall blocks
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- Cap stones
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- Courses
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- Total stones
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FAQ
Do I need a footing? +
Yes — a level, compacted gravel base 6 inches deep and 6 inches wider than the block. Walls over 4 ft typically need engineering.
Cap stones? +
One cap stone per LF of wall, glued with construction adhesive.