Pre-mixed bags or scratch batches by unit, joint size & type
Project Type
Mix Method
Repointing volume = joint length in the wall face × joint width × the depth you raked out not the full original joint depth, so you won't over-order mortar.
Please enter valid quantities first.
Total Mortar Volume Needed
–cubic feet
– cubic yards
Pre-Mixed Bag Count
Site-Mixed Batch Materials
1 : 1 : 6Uses the standard masonry convention of 1 bag Portland cement or lime ≈ 1 cu ft by volume. Wet-mix yield typically runs 55–65% of the combined dry ingredient volume depending on sand gradation and moisture this tool uses 60% as a mid-range estimate. A test batch is recommended for large pours.
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Project Inputs
Estimates use standard industry coverage rates, ASTM C270 mix proportions, and typical bag yields. Actual mortar consumption varies with workmanship, unit tolerances, and joint condition always confirm with a trial batch or your mortar manufacturer's spec sheet.
Match your mortar to the job, not the other way around. QuickTonnage's mortar calculator splits pre-mixed bags from scratch-mixed batches, using ASTM Type M, S, N, or O ratios.
Not sure how many bags you need, or which mortar type to buy? Here's the short version.
This block mortar calculator adjusts coverage automatically when you change joint thickness or unit size, so the bag count always matches your real job.
Roughly 8 bags of 80 lb mortar mix at a standard 3/8 inch joint, though block size changes this slightly.
Type N suits general above-grade walls. Type S is stronger and used for structural or below-grade work like foundations.
About 30 standard bricks per 80 lb bag at a 3/8 inch joint. Thicker joints mean fewer bricks per bag.
Yes — select Natural Stone Veneer as your masonry unit, and the calculator adjusts coverage for stone joints.