Brick Calculator - Brick Count, Mortar & Wall Cost

Bricks Per Square Foot - Quick Reference

These are pre-calculated brick counts for a single-wythe wall (one brick thick) in running bond with a 3/8 inch / 10 mm mortar joint. Use this for the on-site sanity check; the calculator above handles your actual brick size and openings.

For double-wythe (two bricks thick) walls, double the count. For cavity walls with brick on both sides, count each face separately. Headers and quoins are extra.

What "6.86 Bricks Per Square Foot" Actually Means

The classic US modular brick is 7-5/8 in long by 2-1/4 in tall, with a 3/8 in mortar joint on every side. The estimating module is brick face plus one joint - that is 8 in by 2-5/8 in, or 21 square inches. A square foot is 144 square inches, so 144 / 21 = 6.86 bricks per sq ft of wall face. That is the number masons memorize.

Change the joint and the number moves. A 1/4 in joint pushes the count to about 7.32 per sq ft. A 1/2 in joint drops it to 6.40. That is why the calculator asks for the joint thickness separately - it is not cosmetic, it is the difference between ordering 6,860 bricks and 6,400 for the same 1,000 sq ft wall. Round up. Bricks are cheap; a half-day pause waiting for the missing pallet is not.

Brick Sizes Around The World

Bricks are local. The size on the bag truck depends on which country's standard the supplier follows. The calculator works with whatever face length and height you type, so the only thing that matters is using the actual brick you are buying, not the nominal name.

Wall Thickness - Single, Double, Cavity

One face area of a wall does not equal one count. The calculator estimates one face; multiply if the wall is more than one brick thick.

• Single wythe / half-brick / 4 in (115 mm). Veneer over framing, garden walls under chest height. One brick thick at the bed. Calculator default.
• Double wythe / one-brick / 8-9 in (230 mm). Solid load-bearing or freestanding wall. Two faces - double the count. Add header bricks if you bond the wythes traditionally.
• Cavity wall / 10-12 in (260-300 mm). Two single wythes with an insulated gap. Each face is its own estimate. Outer face is usually facing brick, inner is common brick or block.
• Triple-wythe and heritage walls. 13 in (340 mm) and up. Multiply face count by wythe count, then add bond bricks. For these, a takeoff drawing beats any calculator.

Indian and Australian site practice often uses "9 inch wall" (230 mm) for external walls and "4.5 inch wall" (115 mm) for internal partitions. The same brick is laid stretcher in one and English/Flemish bond in the other - the count changes accordingly.

Bond Patterns and Waste

Brick face count tells you what the wall needs. Bond pattern tells you how many extras you have to order.

• Running bond: the simplest pattern, half-bond stagger. 8-10% waste is normal. Most US residential veneer.
• Stack bond: aligned vertical joints, no stagger. 8% waste. Structurally weaker; needs reinforcement.
• English bond: alternating courses of stretchers and headers. 12-15% waste because of the header cuts.
• Flemish bond: stretcher and header alternating within each course. 12-15% waste.
• Herringbone (paving / patio): 15-20% waste due to angled edge cuts.
• Soldier / sailor accent courses: add the linear feet x bricks per foot for the band, separately from the field.

For repair work on an existing wall, push waste to 20-25% - matching colour and trying not to break neighbouring bricks while removing the old ones is a real cost.

Mortar - The Other Half of the Order

Brick walls are roughly 20% mortar by volume. For US modular brick with 3/8 in joints, plan on about 7 bags of pre-mixed mortar (60-80 lb) per 1000 bricks for a single-wythe wall. Joint thickness, joint profile, brick absorption, and waste on the mud board all push that up.

• Type N mortar is the residential default - medium strength, good for chimneys, veneer, and most freestanding walls.
• Type S is stronger - retaining walls, structural masonry, walls below grade.
• Type M is the highest strength - heavy load, paving, foundation walls.
• Type O is soft - interior non-load-bearing or historic restoration.

India uses cement-sand ratios on site instead of bag names - 1:6 for normal walls, 1:4 for stronger work, 1:3 for retaining. The calculator gives a planning bag count; for a real takeoff, use the Mortar Calculator with your specific joint and mortar type.

Cost Estimates Around The World

2026 retail face-brick prices for a common modular or stock brick. Engineering brick, hand-made, glazed, and reclaimed bricks sit above this band - sometimes 3x to 10x.

A working bricklayer lays 300 to 500 bricks per day on straight wall in running bond. Cuts, returns, and decorative bond drop that to 150-250. Multiply your brick count by the day rate divided by that productivity to ballpark labour. If the day rate is $400 and the bricklayer does 400 bricks a day, labour is roughly $1 per laid brick on simple work.

Common Mistakes

• Using the nominal brick name (4x8) instead of the actual face (7-5/8 x 2-1/4) in the calculator.
• Forgetting the mortar joint - the joint is part of the estimating module.
• Subtracting tiny openings but missing large windows and doors.
• Estimating one face for a double-wythe or cavity wall.
• Skipping bond-pattern waste on English, Flemish, or herringbone work.
• Mixing two pallets from different production runs without sorting - colour banding appears on the finished wall.
• Ordering exact brick counts; pallets ship in 500 or 1000 brick units and partial pallets cost more per brick.
• Ignoring the mortar bag count; the wall is roughly 20% mortar by volume.

Related Construction Calculators

For mortar bags and ingredient mix, see the Mortar Calculator. For concrete block walls, switch to the Block Calculator. Wall area cleanup starts in the Square Footage Calculator. If the wall sits on a footing, see the Footing Calculator and the Concrete Calculator. More tools live on the Construction Calculators hub.