🏗️ Concrete Block Calculator
Wall size and block size
Counts use the standard 3/8 in (10 mm) mortar joint, which is why the sizes above are the actual block dimensions — with the joint, each block covers a full 8 × 16 in of wall.
Counts use the standard 3/8 in (10 mm) mortar joint, which is why the sizes above are the actual block dimensions — with the joint, each block covers a full 8 × 16 in of wall.