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Calculate materials, costs, and dimensions for your retaining wall project. Our calculator determines block quantities, base requirements, drainage needs, and total project costs for professional results.
Last updated: February 2, 2026
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Total length of the retaining wall
Height from base to top of wall
Choose your preferred block type and size
For a typical retaining wall (20 feet long, 4 feet high, standard blocks):
Total cost: $1169
Our retaining wall calculator uses industry-standard construction practices and material specifications to provide accurate estimates for your project. The calculation considers block dimensions, foundation requirements, drainage systems, and structural reinforcement needs.
This comprehensive approach ensures your retaining wall meets structural and drainage requirements.
Proper retaining wall construction requires attention to foundation depth, drainage, and reinforcement. The foundation should be at least 1/10th the wall height with a minimum 6-inch depth. Proper drainage prevents hydrostatic pressure that can cause wall failure.
Need help with other construction calculations? Check out our stone calculator and driveway paving calculator.
Get Custom Calculator for Your BusinessResult: Total project cost = $1169 ($562 materials + $608 labor)
This includes all materials, drainage, and professional installation.
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