Block Wall Calculators
Order the right number of CMU blocks and mortar bags for a wall, retaining wall, or foundation stem wall.
Enter wall length, height and block size — with openings subtracted — for a block count, mortar bags and total weight.
Already know your block count? Get the total weight for hauling, delivery, or lift-equipment limits.
Blocks, mortar and weight
A block wall's material list comes down to three things: how many blocks cover the wall face, how many bags of mortar hold them together, and how much the finished wall weighs — which matters for footing design and for figuring out how many pallets a delivery truck can carry.
The block wall calculator handles all three from a single wall length and height, with standard 8×8×16 block as the default and four other common sizes to choose from. If you already have a block count and just need the weight, the block weight calculator skips straight to that.