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CM into Inches
Construction · Calculator

Mortar Calculator

Calculate the amount of mortar needed for a brick or block wall.

Mortar Calculator

Estimate the cubic feet or bags of mortar required for your masonry project.

Formula

Mortar = wall area × joint thickness × mortar ratio

Step-by-step

  1. Compute number of joints
  2. Compute mortar volume per joint
  3. Sum and convert to bags

Example

20×10 ft wall = ~3.5 ft³ mortar, ~7 bags.

FAQ

How much does an 80 lb bag of mortar cover?+

Approximately 0.5 cubic feet per 80 lb bag.

What is the mortar ratio?+

A typical mix is 1 part cement to 3 parts sand.

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