CMU Block Calculator
Calculates CMU blocks, mortar, grout, and rebar for concrete masonry walls
Total length of the wall in feet
Total height of the wall in feet
Select the CMU block dimensions (height x width x length in inches)
Wall Area
Total surface area of the wall
Blocks Needed
Number of CMU blocks without waste allowance
Blocks with 10% Waste
Recommended quantity including 10% waste for cuts and breakage
Mortar Bags (est.)
Estimated bags of mortar (1 bag per 12.5 blocks)
Related Calculators
Sod Calculator
Calculates the number of sod rolls or pallets needed to cover a lawn area
Grass Seed Calculator
Estimates pounds of grass seed needed based on lawn area and seed type
Brick Calculator
Estimates bricks or blocks, mortar, and sand needed for a wall or structure
Plywood Calculator
Determines the number of plywood sheets needed for subfloor, sheathing, or formwork