Free US quantity worksheet
Mortar Calculator for Brickwork Bag Planning
Enter the number of bricks expected to be laid and the chosen product coverage in bricks per bag. The tool shows whole bags before and after an extra mortar allowance. It does not estimate blockwork, repointing, tile mortar or grout.
Starting figures illustrate the calculation. Replace them with verified measurements and the actual product details. Allowances are your choice, not a recommended rate.
Your quantity result
- Whole bags before extra allowance
- 10
- Whole bags with entered allowance
- 11
Enter bricks expected to be laid, excluding unused brick-order allowance. The 37-brick starting coverage is product-specific: QUIKRETE Mortar Mix 1102, 80 lb, up to 37 standard bricks per bag. Actual brick, joints and waste change coverage. This does not select a mortar type or calculate repointing, grout or block work.
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Use coverage for the actual mortar product
The QUIKRETE Mortar Mix 1102 data sheet says an 80 lb bag lays up to 37 standard bricks. That is the identified starting example, not a universal yield for every mix, brick or joint. Replace it with appropriate product and project information.
Whole bags before allowance = round up (bricks laid / bricks per bag). Whole bags with allowance = round up (bricks laid × (100 + allowance %) / (100 × bricks per bag)). For 370 bricks at 37 per bag, the base is 10 bags; a chosen 10% extra allowance gives 11.
Enter bricks to be laid, not unused spare bricks included in a purchase allowance. Mortar allowance is a separate choice. The coverage figure is approximate and actual work can require more material.
Bag planning does not select the mortar or wall system
Use the mix, joint details and construction requirements appropriate to the actual project. The calculator does not choose a mortar type, specify water, design reinforcement or assess a structure.
Concrete and mortar products have different yields and applications. A concrete bag volume must not be substituted for this brick-coverage input. For unusual units, joint patterns, repointing or another application, obtain the correct coverage method rather than treating this estimate as a complete takeoff.