Mortar Calculator
Estimate wet mortar volume for masonry from wall area, your mortar-use rate and a visible waste allowance.
Use a project-specific mortar rate
Mortar use changes with brick or block size, joint thickness, bond, workmanship and site conditions. Enter a rate that matches your unit dimensions or supplier guidance rather than assuming one universal litres-per-square-metre value.
How the estimate works
Mortar litres = masonry area × litres per m² × (1 + waste %)The calculator keeps the waste allowance separate so you can see how much extra material it adds.