Brick Calculator

About the Brick Calculator

Ordering brick is one of the few materials purchases where a bad estimate hurts in both directions. Order too few and you may find that the next pallet comes from a different kiln lot, with a slightly different color and size, so the finished wall shows a visible patch. Order far too many and you are paying for, hauling, and storing pallets that nobody wants back. This calculator turns a wall's length and height into a brick count by multiplying the face area by the number of bricks that fit in each unit of area, then adding a waste allowance for cuts and breakage.

The number that drives everything is the bricks-per-area rate, and it comes from the brick itself plus the thickness of the mortar joint. A U.S. modular brick measures roughly 7 5/8 inches long and 2 1/4 inches tall, and with a 3/8 inch joint it occupies a module of 8 by 2 2/3 inches, which works out to about 6.75 bricks per square foot of wall face. A common metric brick of 215 by 65 millimeters with 10 millimeter joints occupies 225 by 75 millimeters, about 59 per square meter. The tool defaults to 7 and 60 so there is a little built-in cushion, but you should replace the default with the figure for your actual brick.

Homeowners building a garden wall, planter, or fire pit surround use it to get a purchase quantity before visiting the yard. Masons and contractors use it for quick pricing before a detailed takeoff. Landscapers use it to compare one wall design against another. The result is a count of face bricks only. Mortar, sand, ties, lintels, footings, and the block or concrete backing behind a veneer are separate quantities that this tool does not estimate.

When to Use It

How to Use It, Step by Step

1. Choose your measurement system first. The U.S. option asks for feet and a bricks-per-square-foot rate, while the Metric option asks for meters and a bricks-per-square-meter rate, and the default rate changes with the toggle.
2. Measure the wall length with a tape along the base where the brick will actually be laid, and enter it in the Wall length field. For a wall with several sections, run each section separately and add the counts.
3. Enter the finished height of the brick portion in the Wall height field. Measure from the top of the foundation or footing course to the top of the wall, not from the ground if part of the wall will sit below grade.
4. Subtract any doors, windows, and other openings yourself before entering the numbers. The tool multiplies length by height and does not know about openings, so find the solid area and enter an equivalent length and height that multiplies to it.
5. Set the Bricks per sq ft field (or Bricks per m² in metric) from the manufacturer's data sheet or the supplier. Leave the default only if you are using standard modular brick or a standard metric brick with a conventional joint.
6. Adjust the Waste factor to match the job. The default of 10 percent suits a plain wall with a few cuts, while walls with many corners, arches, or a pattern bond that requires lots of cut bricks justify more.
7. Press the calculate button and read the Wall area and Bricks needed lines. Check that the area matches what you expect from the measurements before trusting the brick count.
8. Convert the count into pallets or cubes using your supplier's quantity per pallet, and ask whether the supplier can hold the same production lot for any later top-up order.

Understanding Your Results

The Wall area line shows the face area the calculator used, in square feet or square meters. This is your first checkpoint: multiply your own length and height on paper and compare. If the two do not match, a field was entered in the wrong unit or the toggle was left on the wrong system. Catching that here is much cheaper than discovering it from a pallet delivery.

The Bricks needed line is the wall area times the rate, increased by the waste percentage and then rounded up to a whole brick. Because of the rounding, the number you see can be a fraction of a brick higher than the raw product, which is harmless. A typical 8 foot high wall needs very roughly 56 bricks per foot of length at the default U.S. rate before waste, which is a useful sanity check against the answer.

Treat the result as a purchasing quantity for face brick only. Your next steps are to confirm the pallet size, add mortar and sand based on the joint thickness and brick type, and decide whether to buy a small extra reserve for repairs. If the wall is structural, load bearing, or tall, the brick count is the easy part and an engineer or local building official should set footing, reinforcement, and tie requirements.

More Worked Examples

Tips for Better Results

• Get the brick's work size (actual length, height, and width) from the manufacturer rather than guessing from the nominal size, because nominal sizes include the joint and actual sizes do not, and the difference changes the bricks-per-area rate.
• Keep the leftover bricks from a job in dry storage. Matching a color after the fact is hard because kiln lots vary, and a few spare bricks make later repairs invisible.
• Raise the waste factor for walls with many corners, curves, or decorative patterns. Every cut leaves an offcut, and complex bonds such as Flemish or herringbone generate much more cutting than a plain running bond.
• Mix bricks from several pallets as you lay them, working from different pallets in turn. Natural color variation between pallets then spreads across the wall instead of showing up as obvious bands.
• Run separate calculations for walls of different thickness or different brick types, such as a face brick feature panel on a common brick wall, so each quantity matches the right supplier line item.
• Ask the yard how bricks are sold. Many are priced per thousand, and delivery fees, pallet deposits, and minimum quantities can matter more than a small difference in the number of bricks.

Common Mistakes to Avoid

• Forgetting to subtract openings. The calculator multiplies length by height only, so windows and doors are counted as brick unless you reduce the area yourself first.
• Leaving the default rate on a different brick size. Oversized, utility, and thin brick all have different face areas, so look up the real figure instead of assuming the default is correct.
• Mixing units across fields, such as entering feet while the toggle is on Metric. Always check that the Wall area line matches your own arithmetic before using the brick count.
• Counting the wall footing or the buried section as visible brick. Only the portion that will be laid in brick should be measured as height.
• Ignoring mortar, sand, ties, and flashing because the tool only shows bricks. Those materials are separate line items, and leaving them out of the budget is a common cause of cost overruns.

Assumptions and Limits

• The result assumes one continuous, uniform rate across the whole wall. Real walls have corners, returns, soldier courses, and cut bricks at the ends, which the waste factor only approximates.
• The tool does not model mortar joint thickness directly. Joint size is baked into the bricks-per-area rate you enter, so a wider or narrower joint than the rate assumes shifts the true count.
• Brick sold in different regions uses different nominal sizes, so published rates differ by country and product. The defaults are common starting points, not universal values.
• Structural questions such as footing depth, reinforcement, wall ties, and wind or seismic requirements are outside the calculator. Walls that carry load or stand tall should be designed by a qualified professional and approved under local building rules.

Key Terms

Wythe

A single vertical layer of masonry that is one unit thick. A single-wythe wall is one brick thick, while a double-wythe wall has two layers tied together.

Modular brick

A U.S. brick sized so that, together with its mortar joint, it fits a 4 inch building grid. Its nominal size is 4 by 2 2/3 by 8 inches.

Running bond

The most common brick pattern, where each course is offset by half a brick from the course below, producing the staggered look of most walls.

Course

One horizontal row of bricks in a wall. Wall height is counted in courses, and each course adds the brick height plus one mortar joint.

Bed joint

The horizontal layer of mortar on which a brick sits. Its thickness, along with the vertical head joint, determines how many bricks cover a given area.

Waste factor

An extra percentage added to the theoretical quantity to cover cuts, breakage, damaged bricks, and rejects so you do not run short during the build.