Brick Course Height Calculator
Calculate brick course height, total wall height, adjusted course count, cap or bond beam allowance, story pole marks, and layout tolerance from real brick and joint sizes.
Choose a real brick course setup, then fine tune dimensions, cap courses, datum, and tolerance.
Brick course height results
| Brick type | Body height | Typical bed joint | Nominal course height |
|---|---|---|---|
| US modular face brick | 2 1/4 in | 3/8 in | 2 5/8 in |
| Queen size brick | 2 3/4 in | 3/8 in | 3 1/8 in |
| King size brick | 2 5/8 in | 3/8 in | 3 in |
| Utility size brick | 3 5/8 in | 3/8 in | 4 in |
| Engineer modular brick | 2 13/16 in | 3/8 in | 3 3/16 in |
| Roman brick | 1 5/8 in | 3/8 in | 2 in |
| Metric brick 215 x 102.5 x 65 | 65 mm | 10 mm | 75 mm |
| Metric brick 230 x 110 x 73 | 73 mm | 10 mm | 83 mm |
| Layout condition | Useful tolerance | Adjustment method | Watch point |
|---|---|---|---|
| Face veneer below a sill | 1/8 in | Spread tiny joint changes | Keep bed joints even |
| Garden wall with cap | 1/4 in | Use cap bed or coping bed | Avoid thin top mortar |
| Block or brick backup line | 3/16 in | Check every few courses | Match shelf angles |
| Metric cavity wall | 3 mm | Maintain gauge rod marks | Coordinate DPC levels |
| Soldier or rowlock cap | 1/8 in | Reserve cap height early | Confirm actual cap rise |
| Course gauge | Mark 8 | Mark 16 | Mark 24 |
|---|---|---|---|
| Modular 2 5/8 in | 21 in | 42 in | 63 in |
| Queen 3 1/8 in | 25 in | 50 in | 75 in |
| King 3 in | 24 in | 48 in | 72 in |
| Utility 4 in | 32 in | 64 in | 96 in |
| Metric 75 mm | 600 mm | 1200 mm | 1800 mm |
| Top condition | Common allowance | Course count effect | Best check |
|---|---|---|---|
| Standard brick course cap | 1 course | Subtract one normal course | Match bond below |
| Rowlock cap course | Brick width plus joint | Use custom cap height | Measure actual unit width |
| Soldier course band | Brick length plus joint | Reserve separate band rise | Coordinate opening heads |
| Bond beam or lintel course | Specified beam height | Remove from brick field | Confirm reinforcement cover |
| Coping over final bed | Coping plus bed joint | May not count as brick course | Check finished top elevation |
Why Do So Many Masonry Projects Fail? This happens because of bad assumptions on how high something is going to be. Yes, maybe you draw out an approximate elevation sketch, and get a feel for wall pattern. But then you forget about doing any math behind it all, which actualy holds up the structure.
There are only certain increments (aka “steps”) that brick can climb, based off its size and size of the mortar joint. Then if those doesn’t add up to what you want the wall to be, either you’ll end up with odd joints or have to trim things down.
Plan Your Masonry Height Carefully
When you input your variables into the calculator above, it do the math for you. You will no longer have to guess at layout plans or try to count courses. Then it calculates modular rise based on your brick size and bed joint thickness. Then it extends that module up entire wall height. Finally, you select whether to force a particular number of courses or try to fit courses to fixed target height.
This is an either/or. One will typically be used at the early planning stage while the other might be required for more detailed layout work where you want to line up the angle of a shelf or a window sill.
Consistent joints is everything. In the US, modular brick use a 3/8 inch mortar bed that results in an approximate (meaning rounded up) course thickness of about 2.625 inches. That’s less than half an inch between courses but each 1/16 inch more or less per joint add up fast along ten feet of wall. It becomes a structural misfit at the third story, and by then you’ve got a tiny miscalculation of a quarter inch every two feet from base to lintel.
The modular math change depending on whether you use Utility, King, or Queen units as shown in the reference table on the page. Choose your baseline carefully since combining standards halfway up a wall makes for visual chaos and possible structural gaps.
Digital plotting works in the physical world using story poles. Rather than measuring each step along the way (accumulating error), you transfer your calculations onto a vertical ladder rung or straight board. Intermediate marks is automatically computed by the tool. You can set marks at every two courses, at every course, or at major intervals every eight courses.
Work are faster when laying, and there is less clutter in the field. Rather than having to use a tape measure at each unit, the mason lines up the line. He focus not on arithmetic, but on both bond pattern and alignment.
The best masonry feels effortless because planning was rigorous. Before the first brick is laid, account for final bits: Set a dedicated height for your top bond beam, soldier band or other course of caps. Without doing so, you’ll squash the final top joint (and/or cut bricks in half to squeeze them onto shorter course). This lets the main body of masonry land as designed and makes for nice transitions up into the coping or roof.
Residential masonry frequentley doesn’t take tolerance into account. Bricks varies during manufacturing, subgrades are uneven, and foundations settle. Because of these things, perfect walls don’t happen very often.
A little wiggle room, generally about 1/8 inch… Is all that’s needed; it allows for adjustments without sacrificing the look. Spread the difference among several joints so no single obvious location conceals a massive hole.
The planning was thorough, so the masonry looks easy. Getting the height of each course correct at the start let the remaining work fall into place. The wall rises evenly and the openings align with the grid. The cap lays flat, requiring little to no cutting. This is all due to honoring the modular rise.
From that initial marking on the story pole, each step up were deliberate and exact. You should of planned better to avoid this mess.
