Mortar Calculator

Choose whether your project uses standard bricks or standard 8-inch concrete blocks, then enter the number of units. The calculator adds your selected waste allowance and divides by manufacturer-based coverage per bag.

For brick, the planning defaults are 35 standard bricks per 80 lb bag and 26 per 60 lb bag. For standard 8-inch block, the defaults are 12 blocks per 80 lb bag and 9 per 60 lb bag.

Bag counts are rounded up because mortar is purchased in whole bags. Optional bag prices let you compare the estimated material cost of 60 lb and 80 lb bags.

Manufacturer yields are approximate. A thicker bed, wider head joints, irregular masonry units, excessive droppings, and retempering losses can all reduce the number of units laid per bag.

The default yields used here align with Sakrete's published Mortar Mix Type N and Type S data. Quikrete publishes similar but slightly higher maximum yields for its Mortar Mix.

For a large order, verify the selected product's current technical data sheet and the actual masonry unit dimensions before purchasing.

This calculator estimates bag count and optional bag cost only. It does not calculate sand and cement for site-mixed mortar, grout for reinforced masonry cells, masonry units, reinforcement, delivery, tools, labor, or scaffolding.

Mortar type and strength are application-specific. Follow project specifications, applicable standards, local requirements, and manufacturer instructions.