Block Calculator
Uses a common planning factor of about 1.125 standard 8×16 in equivalent blocks per square foot of wall face including mortar.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Measure wall face area in square feet or square meters. Add waste for cuts and partials at openings.
What the math is doing
Block count ≈ square feet × 1.125 × (1 + waste), rounded up.
Frequently asked questions
What about 6 in or 12 in block?
Face area is similar per block; adjust factors with your supplier.
Does this include bond beams?
Add linear feet of special units separately.
What waste is typical?
5–10% on simple walls; more with many openings.
Are lintels included?
No. Steel or precast lintels are separate takeoffs.