Brick Calculator
Work out how many bricks a wall, patio or path needs — in-place count, purchase count with waste, mortar volume and pallet count — by modular, standard, queen, Norman or utility size.
Bricks to buy
604 bricks to buy
548 in place, 10% waste applied.
In place
548
before waste
Purchase
604
10% waste applied
Mortar
4.42 cu ft
bag count not sourced — see below
Using these numbers
- In place — the whole number of bricks actually built into the wall or patio, before any waste allowance.
- Purchase — the whole number of bricks to buy, including your waste allowance — always at least equal to the in-place count.
- Mortar — a volume (cu ft), not a bag count — see the methodology below for why no bag figure is shown.
- Pricing — this page has no dollar figures — see the brick wall cost calculator for a sourced price range.
Related calculators
Methodology
Bricks needed is wall (or patio) area times coverage per brick, at full precision, then a waste allowance added at the end — never a rounded intermediate fed back into the next step.
Coverage model
Coverage is derived from each brick’s actual (not nominal) dimensions plus the standard 3/8 in mortar joint on both axes: 144 ÷ ((length + joint) × (height + joint)) bricks per sq ft, for a wall (face length × height). A patio or path is laid flat, so it uses the brick’s face length × depth instead.
A coursing convention exists that states "3 courses = 8 in," which implies a 7/16 in joint rather than 3/8 in — both are real, published conventions and they disagree. This page uses the 3/8 in joint because it is the only sourced joint width tied directly to the brick’s own dimensions; a wall coursed to the 8-in convention covers about 1.6% fewer bricks per sq ft than this page computes.
coverage (bricks/sq ft) = 144 ÷ ((L + 0.375) × (H + 0.375)), L and H in inchesRounding rule
The exact quantity (area × coverage) is never rounded before use. The displayed in-place count is the floor of that exact quantity — a real, physical count of whole bricks, not a display convenience — and the purchase count is a single ceiling applied to the exact quantity times (1 + waste%), taken from the unrounded figure, never from the displayed in-place count.
Mortar volume is computed from the same unrounded exact quantity, never from the displayed (floored) in-place count — a wall that is mostly whole bricks with one small cut piece still needs mortar for that cut piece’s share of joint.
At 0% waste, the purchase count can still exceed the displayed in-place count by one brick: a partial brick at the edge is cut from one whole brick, so the difference between purchase and displayed in-place (the waste/cutting allowance line) is never invented as zero.
Mortar volume
Each brick’s share of mortar is its module volume (actual dimensions plus the 3/8 in joint on every face) minus its own actual volume: depth × ((length + joint) × (height + joint) − length × height). This is a joint-volume model only — it does not include a collar joint between two wythes, mortar dropped or wasted on site, or joint tooling.
This page reports mortar as a volume (cu ft), not a bag count — see the stated absence below for why.
mortar per brick (cu in) = D × ((L + 0.375) × (H + 0.375) − L × H)Sizes offered, and one that is not
Modular, standard, queen, Norman and utility bricks are all sourced from the same named, dated publisher page. King brick is not offered: the only figure this project found for it (a 4.80 bricks/sq ft rate) implies a 10 in × 3.0 in module with no named source behind it — shipping it would mean either inventing a source or silently reusing a different brick’s numbers under King’s name, and this page does neither.
A separate supplier rate, labelled "Queen / Engineer Modular," is also not offered under either name: it matches a 7-5/8 in × 2-3/4 in brick that is neither this page’s sourced Queen (9-5/8 in × 2-3/4 in) nor independently sourced under the Engineer Modular name.
Constants register
| Constant | Value | Source | As of |
|---|---|---|---|
| Standard mortar joint | 3/8 in (0.375) | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Modular brick, actual size | 7-5/8 × 2-1/4 × 3-5/8 in (L×H×D) | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Standard brick, actual size | 8 × 2-1/4 × 3-5/8 in | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Queen brick, actual size | 9-5/8 × 2-3/4 × 3-1/8 in | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Norman brick, actual size | 11-5/8 × 2-1/4 × 3-5/8 in | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Utility brick, actual size | 11-5/8 × 3-5/8 × 3-5/8 in | Belden Brick, "Brick Dimensions Guide" | 2026-09-04 |
| Modular coverage (derived) | 6.857 bricks/sq ft (wall) | Derived from the two rows above | 2026-09-04 |
| Pallet size, standard/modular | 500–540 bricks/pallet | HomeGuide, "How Many Bricks Are in a Pallet?" | 2026-09-03 |
The rounding rule, verbatim
In-place count = floor(area × coverage). Purchase count = ceil(area × coverage × (1 + waste%)), computed from the unrounded area × coverage, never from the floored in-place count. Mortar volume = area × coverage × mortar-per-brick, also from the unrounded figure.
FAQ
- How much does a brick weigh?
- A standard clay brick weighs roughly 4.5 lb (2 kg), cross-checked against a second, independent source. Weight scales with size and material — a solid concrete brick runs 9–11 lb, and a Norman or jumbo clay brick can reach 8 lb.
- How much does a brick weigh in kilograms?
- About 2 kg for a standard clay brick (4.5 lb) — see "How much does a brick weigh?" above for the full source and the range by size and material.
- Is there a standard brick size?
- Yes, but "standard" and "modular" are different sizes: a US standard brick is 8 in × 2-1/4 in × 3-5/8 in actual; the modular brick, the most common US size today, is 7-5/8 in × 2-1/4 in × 3-5/8 in actual (8 in × 2-2/3 in × 4 in nominal, with a 3/8 in joint).
- How long, wide, and tall is a standard brick?
- 8 in long × 2-1/4 in high × 3-5/8 in deep, actual size — the dimensions the brick itself measures, not the nominal size that includes a mortar joint.
- What is a modular brick size?
- 7-5/8 in × 2-1/4 in × 3-5/8 in actual; 8 in × 2-2/3 in × 4 in nominal (actual size plus a standard 3/8 in mortar joint on length and depth). It is the most common US brick size today.
- What is the standard brick size in the UK?
- UK and metric/BIS standard sizes differ entirely from US sizes — this page computes US sizes only; see the Named & International Brick Sizes section above rather than assuming a US size applies.
- How many bricks are on a pallet?
- A standard/modular clay-brick pallet typically holds 500–540 bricks; queen/king-size runs about 450, and utility (the largest common size) about 400 per pallet. Pallet counts vary by manufacturer — always confirm with your supplier.
- How many bags of mortar do I need per 1,000 bricks?
- This page computes mortar as a volume, not a bag count — about 8.06 cu ft of mortar per 1,000 modular bricks, from the joint geometry. A brick-specific manufacturer bag yield is not sourced (see the mortar result’s own note), so no bag count is shown.
- How many bricks per bag of cement?
- This page reports mortar volume, not a bag-of-cement count — see "How many bags of mortar do I need per 1,000 bricks?" above for why no bag figure is shown.
- How many queen-size bricks are in a square foot?
- About 4.61 bricks per sq ft, derived from Queen’s actual 9-5/8 in × 2-3/4 in size plus the standard 3/8 in joint. King’s rate is not shown — its dimensions are not sourced anywhere this page can verify.
- How many modular bricks are in a square foot?
- About 6.86 bricks per sq ft for a wall (144 ÷ 21 sq in), derived from the modular brick’s actual 7-5/8 in × 2-1/4 in size plus the 3/8 in joint.
- How many thin bricks or brick veneer per square foot?
- Thin brick covers by face area only, close to a full brick’s face-coverage rate — but its much smaller depth means it needs no footing or wall ties the way a full structural brick veneer wall does. This calculator does not have a dedicated thin-brick mode yet; enter your thin brick’s actual face dimensions under Custom coverage rate for an exact count.
- How much weight can a brick wall hold?
- This page computes brick quantity and weight per brick, not structural load capacity — that depends on wall design, mortar type, reinforcement and local code, none of which this calculator evaluates. Consult a structural engineer for a load-bearing question.