Brick Calculator
This calculator works out how many bricks you need for a wall, so you can order the right quantity without running short partway through a job or over-ordering and wasting money. You enter three figures: the wall area in square metres, how many bricks are laid per square metre for your brick size and coursing (a standard single-skin wall is typically about 50 bricks per square metre, including mortar joints), and a waste allowance as a percentage for cuts around corners and openings and the odd breakage on site. The calculator multiplies the area by the bricks per square metre to get the bricks needed for the area, then adds your waste percentage and rounds up to a whole number, giving you a total to buy alongside the base figure before waste. It updates instantly as you change any field, so you can test brick sizes or waste margins before ordering. To measure the wall area, multiply length by height, and subtract large openings for a tighter figure, or leave them in as a buffer. A waste allowance of 5 to 10% suits most straightforward walls, though fussier designs need extra. Because brick sizes and supplier wastage vary, treat the result as a solid ordering estimate, and check with your supplier or bricklayer before a final order.
How it works
The bricks for the area is the wall area times the bricks per square metre. Adding a waste allowance covers cuts at openings and corners and the odd breakage. The calculator rounds up to whole bricks.
Worked example
A 20 square metre wall at 50 bricks per square metre needs 1,000 bricks. With 10% waste, you would order about 1,100 bricks.
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