🧱 Free Calculator
Retaining Wall Calculator
Estimate blocks, gravel, and wall rock needed for retaining walls. Calculate materials based on wall length, height, and block type.
Backward tilt adds stability and slightly more blocks
🧱 Retaining Wall Materials
0 blocks
🧱 Retaining wall calculation: Number of blocks = (Wall Length in inches ÷ Block Length) × (Wall Height in inches ÷ Block Height). Add 5-10% for cuts and waste.
💡 Pro tip: For walls over 3 feet tall, consult an engineer for drainage and reinforcement. Base gravel (4-6″ deep) and backfill gravel are essential for wall longevity.