Mortar Bag Yield Calculator
How many bags of mortar are needed for a given brick or block count? Uses standard mortar-per-brick consumption.
Result
General calculation reads
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How to use this calculator
- Enter the number of bricks or blocks you plan to lay.
- Pick the unit type — the per-unit mortar volume varies significantly.
- Pick a bag size and read the bag count.
About this calculator
Mortar consumption depends on the unit type. Standard bricks need about 1 cubic foot of mortar per 7 bricks; CMU (concrete masonry units) need more because the joints are bigger. Mortar is sold in 60 lb and 80 lb bags; a 80 lb Type S or Type N bag yields about 0.74 ft³ once mixed. A 15% waste factor is typical because of mortarboard losses.
Frequently asked
Why is the waste factor higher than for concrete?+
What is the difference between Type N, S, and M mortar?+
How much mortar per CMU block?+
Can I use this for stone veneer?+
Should I keep mixed mortar overnight?+
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