Drawing No. CB-01 · Construction Reference
Concrete Block Fill Calculator
Core volume per block × number of blocks, plus wastage — for filling hollow CMU or cinder block walls.
01 Wall dimensions
Imperial (in / ft)
Metric (cm / m)
in
in
02 Block specifications
Sets typical shell & web thickness — override any figure below.
1 = standard 2-core block, 2 = 3-core block, etc.
in
in
in
in
in
%
Volume of core per block: —
03 Block cross-section
04 Fill estimation
Blocks needed
—
Wall area ÷ block face area.
Fill volume
—
Core volume × block count.
Wastage
—
Extra allowance for spillage.
Final volume
—
Fill volume + wastage.
05 Full breakdown
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