Concrete Block & Mortar Calculator

Blocks, courses and bags of mortar for a block wall or foundation, less openings. Free, no sign-up.

Standard block lays up on a 16" × 8" module (390 × 190 mm block with a 10 mm joint is 400 × 200 mm), so each block covers 0.89 sq ft of wall, or 12.5 per m².

Mortar varies with the joint and the mason, so it's figured from the bags per 100 blocks you enter — check the bag.

Taulien Construction · Fredericton, New Brunswick · info@taulien.com · 506-230-5131