Retaining Wall Calculator
Free retaining wall calculator. Estimate materials needed for concrete block, poured concrete, and timber retaining walls. Includes drainage requirements.
Retaining Wall Materials & Cost
| Wall Type | Cost per sqft | Lifespan | Max Height (DIY) |
|---|---|---|---|
| Concrete Block (CMU) | $15-30/sqft | 50-100 years | 4 feet |
| Poured Concrete | $20-40/sqft | 50-100 years | Requires engineer |
| Natural Stone | $25-50/sqft | 75+ years | 3 feet |
| Timber/Railroad Ties | $10-20/sqft | 15-25 years | 4 feet |
| Interlocking Block | $12-25/sqft | 50+ years | 4 feet |
Concrete Block Count Estimator
| Wall Length | Height 2' | Height 3' | Height 4' |
|---|---|---|---|
| 20 ft | 60 blocks | 90 blocks | 120 blocks |
| 30 ft | 90 blocks | 135 blocks | 180 blocks |
| 50 ft | 150 blocks | 225 blocks | 300 blocks |