Brick Calculator
Calculate exactly how many bricks you need for any project. Enter wall dimensions and brick type to get brick count with waste factor, plus mortar quantity estimates.
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Enter your values above to see the results.
Tips & Notes
- ✓Order bricks from one production run and verify all cubes share the same lot number — bricks from different firings can vary noticeably in color and cause a visible patchwork effect on the finished wall.
- ✓Subtract door and window openings from the total wall area before calculating bricks, but add back 5–7% waste specifically for the cuts required around those openings.
- ✓Standard mortar joint thickness is ⅜ inch. Thicker joints (½ inch) reduce the number of bricks needed per sq ft by approximately 5%; thinner joints (¼ inch) increase it by a similar amount.
- ✓For retaining walls and structural applications, use solid brick rather than hollow or cored brick — hollow brick is fine for veneers and non-structural applications but cannot carry structural loads.
- ✓Stack bricks on a pallet off the ground and cover with a tarp before installation — moisture absorption from ground contact can cause efflorescence (white salt staining) on the finished face.
Common Mistakes
- ✗Using square footage of the opening dimensions rather than subtracting windows and doors from the wall area — this leads to ordering 10–20% more bricks than needed on walls with multiple openings.
- ✗Not accounting for pattern cuts in the waste factor — herringbone and diagonal patterns waste 15–20% of material in angled cuts at every edge, far more than a running-bond wall.
- ✗Ordering mortar separately on a second delivery — mortar and bricks should be ordered together to avoid delays mid-project when a wall cannot be left partially laid.
- ✗Confusing brick veneer (1 wythe, non-structural facing) with structural brick (multiple wythes) — structural brick walls require significantly more bricks and a different foundation design.
- ✗Mixing brick types mid-project when the original order runs short — sourcing matching bricks from a different supplier almost always results in a visible color and texture mismatch.
Brick Calculator Overview
Brick estimation requires calculating wall area, applying the correct brick coverage rate for your chosen brick size, and adding a waste allowance — all before placing an order that typically cannot be returned. Ordering the right quantity on the first delivery avoids the two most common and costly errors in masonry projects: running out mid-wall and creating a visible color-match problem when sourcing additional bricks, or massive over-ordering of a material that weighs 4–5 lbs per brick.
Basic brick quantity formula:
Bricks Needed = (Wall Area ÷ Brick Face Area) × (1 + Mortar Joint Factor) × Waste Factor
EX: Wall 20 ft × 8 ft = 160 sq ft. Standard modular brick at 7 bricks per sq ft → 160 × 7 = 1,120 bricks. Add 10% waste → 1,232 bricks. Round up to nearest 50 → order 1,250 bricksBrick sizes and coverage rates — the most common US brick types:
| Brick Type | Dimensions (L × H × D) | Bricks per sq ft | Bricks per sq ft (with mortar) | Common Use |
|---|---|---|---|---|
| Modular | 7⅝ × 2¼ × 3⅝ in | 6.75 | 7.0 | Standard residential |
| Standard | 8 × 2¼ × 3¾ in | 6.55 | 6.75 | General construction |
| Queen | 9⅝ × 2¾ × 3 in | 4.5 | 4.7 | Economy, large walls |
| King | 9⅝ × 2¾ × 3 in | 4.5 | 4.7 | Same as queen, regional variation |
| Norman | 11⅝ × 2¼ × 3⅝ in | 4.5 | 4.7 | Long horizontal look |
| Jumbo | 11⅝ × 3½ × 3⅝ in | 3.0 | 3.1 | Faster laying, commercial |
| Project Type | Waste Factor | Reason |
|---|---|---|
| Straight wall, no openings | +5% | Minimal cuts, standard breakage |
| Wall with windows/doors | +7% | Cuts around openings, header courses |
| Patio / walkway | +10% | Edge cuts, pattern fitting |
| Curved wall | +15% | Significant cuts to maintain radius |
| Herringbone pattern | +15% | 45° cuts at every edge |
| Complex pattern (basketweave) | +20% | Multiple cut angles throughout |
Frequently Asked Questions
For standard modular brick (the most common type in the US) with a standard ⅜-inch mortar joint: approximately 7 bricks per square foot of wall face. Queen and Norman bricks cover the same area with approximately 4.7 bricks per square foot due to their larger face dimensions. Always verify the brick size you are purchasing and use the corresponding coverage rate — using the wrong rate can produce estimates 30–50% off.
Measure the patio area in square feet. For a flat installation (soldier course or flat-laid pattern): standard modular brick at flat orientation covers approximately 4.5 bricks per sq ft. For a 200 sq ft patio: 200 × 4.5 = 900 bricks. Add 10% waste for a simple pattern or 15% for herringbone: 990–1,035 bricks. Round up to the nearest 50 and order 1,000–1,050 bricks. Also calculate sand base material separately — typically 1 inch of sand requires about 2.5 tons per 100 sq ft.
Standard building bricks are designed for vertical wall construction — they are typically not rated for vehicle loads and may crack under wheel traffic. Paver bricks are denser, more uniform in dimension, and manufactured to withstand repeated compression loads from foot or vehicle traffic. For driveways: always use paving bricks rated for vehicle traffic. For patios and walkways: either paver bricks or standard bricks flat-laid work well. Paver bricks typically cost 20–40% more than standard bricks.
A standard 60 lb bag of type S or type N mortar mix covers approximately 20–25 standard bricks at a ⅜-inch joint. For 1,000 bricks: 1,000 ÷ 22 = 45 bags of mortar. For projects over 500 bricks, ordering pre-mixed mortar by the bag is more economical than site-mixing from Portland cement and sand. Always order 10% extra mortar — running short mid-project causes unnecessary joints and color inconsistencies.
Outdoor bricks must be rated SW (Severe Weathering) for regions with freeze-thaw cycles — this rating indicates the brick can withstand repeated freezing and thawing without spalling or cracking. MW (Moderate Weathering) bricks are acceptable in mild climates. NW (No Weathering) bricks are for interior use only. In regions with harsh winters, using the wrong weathering rating leads to spalling within 2–5 years. Check the brick label or ask your supplier for the ASTM weathering rating.
No — regular clay bricks can crack and even explode when exposed to high heat because they absorb moisture and the steam pressure causes failure. A fire pit requires firebrick (also called refractory brick), which is manufactured from a different clay composition that can withstand temperatures up to 2,000°F without failure. The interior of any fire pit, fireplace firebox, or pizza oven that contacts flames must use firebrick. Regular bricks are acceptable for the exterior decorative surround that does not contact direct flame.