Concrete & Structural

Retaining Wall Basic

Face unit count, capstones, and backfill volume for a simple retaining wall.

Safety/code-sensitive estimate. This calculator is not a substitute for licensed professional review, applicable code requirements, manufacturer instructions, field verification, permits, or inspections. Do not rely on this result as the sole basis for work that could affect life safety, fire safety, electrical safety, structural safety, public safety, property damage, code compliance, or required licensure.

Formula: Blocks = (WallArea / BlockArea) × (1+Waste) | Backfill = L × H × TrenchDepth

Wall length (ft)

Wall height (ft)

Block length (in)

Block height (in)

Cap length (in)

Trench depth (ft)

Waste (%)

Code Limits

Max allowed height (ft)

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