Brick & Mortar Calculator

Enter your wall size, pick how it is built, and this works out the bricks (or blocks), the bags of mortar, and an indicative material cost. It uses the UK standard brick of 215 × 102.5 × 65mm with a 10mm joint, which gives the familiar trade figure of 60 bricks per square metre for a single skin.

The figures include your chosen wastage on the bricks or blocks. Mortar is estimated at about 0.022 m³ per square metre of single-skin brickwork, where one 25kg bag of ready-mixed mortar lays roughly 0.0125 m³ once compacted. Blockwork uses less mortar because the joints are fewer and the blocks are larger. Treat the cost as a material guide only: it excludes delivery, sand and cement bought loose, wall ties, a damp-proof course, footings and labour.