HomeExpertly
www.homeexpertly.comConcrete Block Calculator
Count concrete blocks (CMU) for a wall — blocks, mortar bags, core-fill grout, and reinforcement — for all standard block sizes. Includes a fill-option comparison and a downloadable PDF material list.
Counts use nominal block sizes with mortar joints. Mortar and grout yields vary with joint size, mix, and technique — order a little extra. For planning purposes only.
Block Wall Details
1
Wall Size
ft
×
ft
sq ft
Total door/window face area to deduct from the wall×
2
Block & Core Fill
in o.c.
Fill + rebar only the reinforced cells (e.g., 32-48" o.c.)
3
Materials & Cost
5%
Typically 5-10% for cuts, breakage, and corners$/ block
Standard 8" CMU roughly $1.50 - $2.50 each$/ bag
80 lb mortar/Type S bag lays ~13-15 standard block$/ cu yd
Only used when cores are filled$/ ft
Only used for grouted rebar cells
Block Estimate
Concrete Blocks Needed
—
Enter your wall details to begin
Blocks (with waste)
—
Mortar Bags (80 lb)
—
Grout Fill
—
Full Cost Breakdown
Net wall area —
Blocks —
Mortar mix —
TOTAL ESTIMATE—
Total cost / sq ft
—
Courses (rows)
—
Rebar
—
Cost Breakdown Chart
Estimated cost by category ($)
Core-Fill Options — Your Wall
| Fill Option | Grout (cu yd) | Rebar (ft) | Added Cost | Total |
|---|
Blocks + mortar are the same for every option; only grout & rebar change. For your 8" block wall.