How this estimate works
The calculator applies: ceil(wallArea x jointThickness x wallThickness x density x (1 + waste/100) / bagMass). Keep measurements in one unit system and round up when suppliers sell whole units.
Limitations
Brick size, voids, mix type, tooling, and site losses require a mason or product data check.
Source to check
Read the authoritative guidance for mortar calculator
Frequently asked question
Is mortar the same as concrete? No. Their aggregates, strength, and intended uses differ.