Brick & Block Coursing Calculator
Calculate brick and block coursing heights, joint thickness and course counts to hit a target wall height, free in your browser.
Unit & wall
This solves coursing/gauge, not brick quantities — use the Brick Wall Calculator for counts. Runs in your browser.
Result
Other course counts
| 26 | 16.96 mm | Fail |
| 27 | 13.38 mm | Check |
| 28 | 10.07 mm | Pass |
| 29 | 7 mm | Check |
| 30 | 4.14 mm | Fail |
Horizontal bond
10 full units + 10 mm to cut/adjust.
Set-out: 28 courses of 76 mm at 10.07 mm bed joints = 2,400 mm.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Pick a brick/block preset (or Custom) and enter the wall height.
- Set the nominal bed joint and its min/max tolerance.
- Read the recommended number of courses, the actual bed joint, the gauge-rod marks and (with a wall length) the horizontal bond fit — then copy the set-out note.
How it works
A wall of n courses with no top bed joint is n × unit height + (n − 1) × bed joint tall. The tool picks the course count that gets the bed joint closest to your nominal, then solves the exact bed joint = (wall height − n × unit height) ÷ (n − 1), and flags it pass/check/fail against your tolerance.
This solves coursing and gauge — it is not a quantity estimator. For brick counts use the Brick Wall Calculator; for retaining-wall blocks use the Retaining Wall Blocks Calculator.
Worked example
2400 mm wall, 76 mm brick, 10 mm nominal joint. 28 courses give an actual bed joint of about 10.07 mm (within an 8–12 mm tolerance). A 190 mm block over the same height gives 12 courses at about 10.91 mm.
Common mistakes
- Adding a bed joint above the top course — the top course has no joint above it, so n courses have only n − 1 joints.
- Forcing a course count that pushes the bed joint outside tolerance — check the options table for a better count.
- Using this for brick quantities — it solves coursing, not counts.
Frequently asked questions
What is a course?
One horizontal row of bricks or blocks. The wall height is built up from the unit height plus the bed joint between courses.
What is a gauge rod?
A marked rod showing the top of every course, so each one is laid to the right height. The tool draws the equivalent marks from your inputs.
How do I adjust bed joints to hit a height?
Slightly thicken or thin the bed joint across the courses. The tool gives the exact bed joint for the chosen course count and checks it against your tolerance.
Does this count bricks?
No — it solves coursing and gauge. Use the Brick Wall Calculator for quantities.
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- Retaining Wall Blocks Calculator
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Cite this tool
Zerdly. (2026). Brick & Block Coursing Calculator. Retrieved from https://www.zerdly.com/tools/brick-block-coursing-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.