CMU Block Calculator

Quick Presets

Wall Dimensions

Wall Length

ft

Wall Height

ft

Opening Area (Total)

SF

Total SF of doors, windows, and openings to subtract

Waste Factor

%

5-10% typical for breakage and cuts

Block Specification

Block Size (Nominal Width)

Standard 8x8x16 nominal block

Block Type

Affects weight and price

Mortar & Grout

Mortar Type

Type S used for most commercial

Joint Thickness

in

3/8" (0.375) standard

Grout Fill

How often cores are filled with grout

Bond Beam Spacing

ft

0 = no bond beams. Typical: every 4-8 ft height

Cost (Optional)

Cost per Block

$

8" CMU: $1.80-$3.50 typical

Mortar Bag (70 lb)

$

Type S, 70 lb bag: $7-$12

Grout per CY

$

Ready-mix grout: $170-$220/CY

Mason Labor

$/block

Optional. $4-$8 per block typical commercial

Total Block Count

0 blocks

Including waste factor

Mortar Required

0bags

Grout Required

0CY

Gross wall area 0 SF

Net wall area (after openings) 0 SF

Blocks per SF 0

Block count (before waste) 0

Mortar volume 0 CF

Cores grouted 0

Bond beam blocks 0

Estimated wall weight 0 lbs

Weight (tons) 0 tons

Estimated Total Cost

$0

Materials: $0 · Labor: $0

Includes block, mortar, grout, and labor (if entered). Excludes reinforcement, lintels, accessories, equipment, and overhead.

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