What this concrete block & mortar calculator calculates
A standard 8 × 8 × 16 in block covers 0.889 ft² of nominal wall face. A 16 × 8 ft wall therefore needs 144 blocks before cuts and waste.
Formula
Wall length × wall height ÷ block face area = blocks; mortar volume ÷ product yield = bags.
Worked example
A 16 × 8 ft wall is 128 ft². Dividing by 16 × 8 ÷ 144 gives 144 nominal blocks before the selected waste percentage.
Ordering decision
Openings, bond pattern, lintels, cores, grout, and reinforcement need a wall-specific takeoff.
The page cites the applicable Uzi Tools reference table beside the calculator. Product labels, current editions, local code, and a licensed professional govern structural, electrical, and life-safety work.
How to use it
- Enter the measured dimensions and keep the displayed units beside each field.
- Review the concrete blocks and mortar for a wall result and the substituted formula before ordering.
- Adjust waste for the layout, cut pattern, product package, and site conditions.
- Copy or print the material list, then verify the cited product data and local requirements.
Concrete blocks and mortar for a wall
Use this block calculator for a rectangular wall face. It estimates standard 8 × 8 × 16 in CMU count and mortar bags from wall area, then adds breakage allowance.
Limits and professional review
Measurements, product yield, waste, moisture, and site conditions can change the order quantity. Local code and a licensed professional govern structural and electrical work.