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Steel & Block Calculator
Estimate the blocks, cement, sand and steel for a block wall. Estimates only — verify with your contractor.
Wall area
160 ft²
Concrete blocks
180
Cement (mortar)
7 bags
Sand
0.78 yd³
Steel rebar
128 ft
½" rebar rods (20ft)
7
Assumptions: 16"×8" block face (~1.125 blocks/ft²), ~1 cement bag per 28 blocks for mortar, ~3 ft³ sand per bag, vertical steel every 4 ft + horizontal every 2 ft, 20 ft rebar rods. Always confirm with a structural engineer for load-bearing work.