Masonry materials · Updated November 3, 2026
Masonry mortar bag estimator
Estimate 80 lb QUIKRETE Mortar Mix bags for standard brick or block counts using the product data sheet's approximate coverage.
Estimate 80 lb bags of QUIKRETE Mortar Mix No. 1102 from a standard brick or block count. Select the matching masonry unit type and enter an allowance you choose. This calculator does not apply to other mortar products or bag sizes.
Enter values and calculate.
The listed product yield is approximate and stated as “up to.” Actual mortar use varies with units, joints and placement. Allowance is your input, not a recommendation. Confirm the selected mortar type and current package instructions for your project.
Sources and method
- QUIKRETE Mortar Mix No. 1102 data sheet (revised November 2020; reviewed November 3, 2026): lists an 80 lb bag yield of up to 37 standard bricks or 13 standard 8 × 8 × 16 inch blocks, and identifies the standard formulation as Type N mortar. Check the package and its current product data before buying; this estimate is limited to the cited 80 lb coverage.
- QUIKRETE product calculator (reviewed November 3, 2026): describes its mortar calculation for standard bricks or blocks at a 3/8 inch joint, rounds bag counts up and cautions that approximate yields exclude uneven conditions and waste.
Method: estimated 80 lb bags = ceil(unit count × (1 + user allowance ÷ 100) ÷ product units per bag). The selected coverage is 13 blocks or 37 bricks per bag, matching the 80 lb yield printed on the cited No. 1102 data sheet. The allowance is not supplied or recommended by this tool. For a different product or bag size, use its matching product data. See the concrete bag estimator for a separate product-yield based tool.
How it works
Enter the number of standard 8 × 2 × 4 inch bricks or 8 × 8 × 16 inch blocks you plan to lay, then choose a project allowance if desired. The estimate uses the cited QUIKRETE Mortar Mix No. 1102 data sheet's approximate yield for an 80 lb bag and rounds up to whole bags.
Good to know
Quick answer: how many mortar bags should I estimate?
For standard 8 × 2 × 4 inch bricks, divide the brick count by 37. For standard 8 × 8 × 16 inch blocks, divide the block count by 13. Multiply by 1 plus your chosen allowance percentage divided by 100, then round up to a whole 80 lb bag. These are approximate maximum yields from QUIKRETE Mortar Mix No. 1102, not guaranteed job yields. Reviewed November 3, 2026.
Which mortar and bag size does this estimate cover?
It uses the yield published for an 80 lb bag of QUIKRETE Mortar Mix No. 1102: up to 37 standard bricks or 13 standard blocks. Other mortar products, package sizes, unit sizes and joint details can have different coverage; use their current product data instead of applying this result to them.
Does this account for my actual mortar joints or waste?
No. The manufacturer describes the yield as approximate, and its calculator notes that yields do not allow for uneven conditions or waste. Mortar joint dimensions, placement, unit variation and workmanship affect use. Enter an allowance that suits your project; the tool does not recommend a percentage.
Can this estimator decide what mortar type my project needs?
No. The standard QUIKRETE Mortar Mix formulation is Type N, but mortar selection depends on the masonry application and project requirements. Confirm the appropriate mortar type and installation details with the plans, current product instructions or a qualified masonry professional.
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