Count concrete blocks for a wall.
Each concrete block covers its face area in square feet. Dividing the wall area including waste by that coverage and rounding up gives the block count. Standard concrete blocks have a well-known face area, so a quick count scales wall footage into the number of units to order.
Block Count
Blocks = area x (1 + waste) / (block length x height / 144)
Blocks = area x (1 + waste) / (block length x height / 144) Each concrete block covers its face area in square feet. Dividing the wall area including waste by that coverage and rounding up gives the block count.
Standard concrete blocks have a well-known face area, so a quick count scales wall footage into the number of units to order.
This calculator takes 4 inputs: Wall area, Block length, Block height, Waste allowance. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.