Brick Calculator - Estimate Bricks and Mortar
Accurately calculate the number of bricks, mortar, cement, and sand needed for your wall. Accounts for wall size, brick type, mortar joints, and wastage.
Wall & Brick Inputs
Unit system
Results are estimates and assume standard mortar mix ratios.
How to Use This Calculator
Set the wall length and height, choose the number of skins, and supply the brick dimensions plus the mortar joint thickness for your chosen unit system. The calculator factors in wastage automatically.
Click Calculate after adjusting inputs; the results card to the right refreshes with bricks, mortar, cement, and sand requirements.
Methodology
The tool converts every measurement to metric meters before computing. The effective area of a brick equals its length plus joint multiplied by its height plus joint. Bricks per square meter follow from the reciprocal of that area and then multiply by wall area, skin multiplier, and wastage percentage.
Mortar volume is derived from the number of bricks (0.23 m³ per 1,000 bricks), then split into cement and sand using a 1:4 mix ratio. Imperial results are converted from the metric totals for user convenience.
- Wall type sets the skin multiplier: single skin = 1, double = 2.
- A higher wastage percentage gives a larger ordering cushion for cuts and breakage.
- Cement and sand are reported in weight units (kg or lbs) after applying standard bulk densities.
Full original guide (expanded)
Why use this calculator
- Get an all-in-one estimate for bricks, mortar, cement, and sand.
- Avoid over- or under-ordering by including a precise wastage percentage.
- Instantly switch between Metric (m/mm) and Imperial (ft/in) units.
- Based on transparent formulas and industry-standard data.