Concrete Block Calculator
Calculate CMU blocks needed for walls.
Last updated: June 2026
📋Full cost guides, how-to steps, and contractor pricing breakdowns at EstimatorSuite.com
Most common. Load-bearing walls, foundations, retaining walls.
Material & Cost Estimate
Blocks needed1718"×8"×16" (incl. 5% waste)
Mortar bags (80 lb)6
Net wall area144 sq ft
Material cost$299 - $555
Labor cost (mason)$1,152 - $2,160
Total installed cost8" CMU (Standard) wall
$1,451 - $2,715$10.1-$18.9/sq ft
Based on: 20'×8' wall (160 sq ft gross, 144 sq ft net), 8" CMU (Standard). 1.125 blocks/sq ft + 5% waste. Prices from HomeAdvisor + Angi 2026. Last verified: June 2026.
Disclaimer: These estimates are for budgeting purposes only. Actual costs depend on your location, current material prices, and contractor rates. Always get 2-3 quotes from licensed contractors before starting any project.