Wall calculations
Concrete block size
Costs & margin
Result
0blocks needed
Wall area: 0
Block area0 in²
Blocks before waste margin0
Mortar bags (≈33.3 blocks/bag)0
Total block cost$0.00
Running-bond layout (illustrative)
Blocks needed = wall area ÷ block area, rounded up and increased by your waste margin — buying at least 10% extra is common practice for cuts and breakage. Mortar estimate uses the standard rule of ~3 bags per 100 blocks (33.3 blocks/bag); mortar type and joint thickness will shift this.