Use our brick calculator for quick and accurate estimates. Learn the bricks calculation formula, wall and floor coverage in square feet, and total cost. Use this brick calculator to estimate how many bricks you’ll need for walls or floors of any size. Supports half-brick and single-brick walls, includes mortar margin options, and calculates mortar volume in cubic feet or cubic meters automatically.

Brick Calculator

Estimate bricks, joints, waste, and cost

Unit system

Imperial (feet, inches, lbs)

Metric (mm, cm, m, kg)

Wall length

Wall height

Wall thickness

Half brick

Single brick

Brick width

Brick length

Brick height

Mortar joint

Waste

Price per brick

Results

Total Wall Area

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Brick Volume (single)

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Bricks Needed (no waste)

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Total Bricks (with waste)

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Mortar Joint Thickness

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Estimated Total Cost

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Results are approximate and assume standard layout. Allow extra for cutting, openings, pattern changes, and site waste.

DIY Guide to Estimating Bricks, Mortar & Cost

Planning a brick wall, veneer, patio, or garden path? This brick calculator walk-through shows you exactly how to figure out bricks, mortar, and budget—without complicated math. We’ll keep the tone friendly and the steps simple, while still giving you the bricks calculation formula, real-world examples in feet/inches and metric, and pro tips to help you order with confidence.

What This Brick Calculator Covers (at a Glance)

Quick brick wall calculation for quantity and cost (with waste).
Mixed-unit examples—imperial (ft/in) and metric (mm/cm/m)—so you can follow along from anywhere.
How to use a wall brick calculator and a floor brick calculator (for patios/paths) with the same logic.
How to factor mortar joints, openings, patterns, and round up to packs.
Handy cross-links to related tools (including a section about checking your concrete calculator price for slabs and bases).

Brick Calculator Basics: What You Need Before You Start

Every brick calculator for wall or floor project asks for the same essentials:

Wall or area dimensions (length × height for walls; length × width for floors/patios).
Brick dimensions (length × height for walls; length × width for floors). Keep your manufacturer’s spec handy.
Mortar joint thickness—typical is 3/8 in (≈ 10 mm).
Waste factor—usually 5–10% to cover breakage, cuts, and offcuts around edges and openings.
(Optional) Price per brick to get an instant material cost estimate.

Pro tip: If your project includes a concrete footing, slab, or base layer, plan ahead with a concrete calculator (and check your concrete calculator price assumptions) so your overall budget lines up.

The Bricks Calculation Formula (Simple & Reliable)

Here’s the bricks calculation formula most brick calculator square feet tools and metric tools use. For walls, we estimate brick count by area:

Core Brick Wall Calculation Formula

bricks_needed = (Wall Length × Wall Height) ÷ ((Brick Length + Joint) × (Brick Height + Joint))

Where:

Wall Length (L) and Wall Height (H) = overall wall dimensions
Brick Length (l) and Brick Height (h) = face dimensions of the brick
Joint (t) = mortar joint thickness (e.g., 3/8 in or 10 mm)

That’s the simple brick wall calculation most DIYers need. For double-skin/cavity walls, you’ll calculate each leaf’s area and add them, or approximately double a single-skin quantity (then refine for openings and ties).

When You’re Paving or Doing a Brick Floor

For patios, walkways, or a brick herringbone on a porch, think in plan view. The idea is identical, but you swap in brick length × width instead of length × height:

bricks_needed (floor) = (Area Length × Area Width) ÷ ((Brick Length + Joint) × (Brick Width + Joint))

This is why the same guide doubles as a floor brick calculator—it’s just a different face of the brick.

Step-by-Step: How to Use a Brick Calculator (Mixed Units)

1) Measure Your Area

Walls: measure length (L) and height (H). If the wall is broken into sections, get each section’s area and add them. Subtract openings (windows/doors) later.
Floors/Patios: measure length × width. Add any extra areas and odd corners—you’ll be glad you did.

2) Choose Your Units

Most DIYers in the U.S. prefer ft/in, while many international readers use mm/cm/m. A good wall brick calculator (or brick calculator square feet tool) will convert for you. In this guide we’ll show both.

3) Enter Brick Dimensions

Grab the spec from your brick supplier (it’s more accurate than guessing). For walls, enter brick length and height. For floors, enter brick length and width. If you’re using thin brick, pavers, or reclaimed units, measure a few samples and note average size.

4) Add Mortar Joint Thickness

Typical joint = 3/8 in (≈ 10 mm). Smaller joints increase brick count; larger joints reduce it. If you’re matching historic work, follow the spec on your drawings.

5) Add Waste

Waste covers breakage, edges, offcuts, and pattern alignment. Use 5–10% for most projects. If you have many openings, curves, or a fancy bond, bump it up.

6) (Optional) Add Price

Enter your price per brick to get a fast material estimate. Don’t forget taxes, delivery, and any pallet/core fees. If you’re pouring a footing, check your concrete calculator and current concrete calculator price assumptions as well.

7) Calculate & Round Up

Review the result (bricks without waste, then with waste). Order by full packs/pallets if possible—matching a leftover batch later can be tricky because of color/lot differences.

Worked Examples: Imperial & Metric

Example A (Imperial): 20 ft × 6 ft Wall

Goal: Use the brick calculator square feet method for a straightforward veneer wall.

Wall area = 20 ft × 6 ft = 120 ft²
Brick face (with joint): brick length 7.5 in + joint 0.375 in = 7.875 in; brick height 2.25 in + 0.375 in = 2.625 in
Brick face area = 7.875 in × 2.625 in = 20.67 in² = 20.67 ÷ 144 = 0.1435 ft²
Bricks (no waste) = 120 ÷ 0.1435 ≈ 836
Add 7% waste → 836 × 1.07 ≈ 894 bricks

Result: Order about 900 bricks (round to packs).

Example B (Metric): 6 m × 2 m Wall

Wall area = 6 × 2 = 12 m²
Brick face (with joint): 215 mm + 10 mm = 225 mm; 65 mm + 10 mm = 75 mm
Face area = 225 × 75 = 16,875 mm² = 0.016875 m²
Bricks (no waste) = 12 ÷ 0.016875 ≈ 711
Add 7% waste → 711 × 1.07 ≈ 761 bricks

Result: Budget for about 760–780 bricks depending on pack size.

Floor/Patio Example (Mixed Units)

Imperial: Patio 12 ft × 10 ft = 120 ft².
Paver brick 8 in × 4 in with 3/8 in joints → effective module 8.375 in × 4.375 in = 36.6 in² = 0.254 ft².
Bricks (no waste) = 120 ÷ 0.254 ≈ 472; with 10% waste ≈ 520.

Metric: Patio 4 m × 2.5 m = 10 m².
Paver brick 200 × 100 mm with 10 mm joints → 210 × 110 = 23,100 mm² = 0.0231 m².
Bricks (no waste) = 10 ÷ 0.0231 ≈ 433; with 10% waste ≈ 476.

Beyond Counts: Mortar, Volume & Practical Planning

Quick Mortar Thinking (No Overwhelm)

Mortar isn’t an afterthought—joints are all over your wall. A field rule for standard brickwork is that mortar often accounts for ~18–25% of the masonry volume. If you’d like a simple check:

Estimate wall volume = (wall area) × (wall thickness).
Estimate brick volume = brick L × W × H × total bricks.
Mortar volume ≈ wall volume − total brick volume.

From there, you can translate mortar volume into bags and sand using your preferred mix ratio (e.g., Type N 1:1:6 or Type S 1:1/2:4.5). Ask your supplier for yield charts and always verify brand-specific coverage.

Openings, Patterns & Thickness (They Matter!)

Openings: Subtract doors and windows from your wall area. Add extra waste for clean trim lines and arches.
Bond Patterns: Stretcher, header, English, Flemish—fancier patterns usually mean more cutting and slightly higher waste.
Wall Type: Veneer (half-brick) vs single-brick vs double-skin walls. Cavity/double-skin often doubles brick needs (refine for ties and insulation).

Ordering & Delivery Tips

Bricks ship in packs/pallets (often ~500 per cube). Try to order full packs to keep color lots consistent.
Store off the ground, covered but ventilated. Protect fresh mortar from heavy rain and rapid drying.
Keep a small “attic stock” for future repairs—same batch/color is gold later.

Wall Brick Calculator vs Floor Brick Calculator

Same math, different brick face:

Wall brick calculator → use brick length × height + joint.
Floor brick calculator → use brick length × width + joint.

In both cases, you’re dividing total area by the “effective” brick module. That’s why this one guide works as a brick calculator for wall and a brick calculator square feet reference for patios.

Handy Coverage Table (Ballpark)

These are approximate values with common joints and stretcher bond. Your exact numbers depend on the brick spec and joint size.

Brick Size (Face)	Approx. Bricks per ft²	Approx. Bricks per m²	Notes
U.S. Standard (~7.5″ × 2.25″)	≈ 6.8–7.2	≈ 73–78	3/8″ joints; stretcher bond
Modular Metric (190 × 90 × 57 mm)	≈ 7.0–7.4	≈ 75–80	10 mm joints; stretcher bond
Double-Skin Wall (two leaves)	~× 2	~× 2	Refine for ties/insulation

Frequently Asked Questions (DIY-Style)

How do I do a quick brick wall calculation without a tool?

Multiply wall length × height for area. Find brick face area including the joint (brick length + joint) × (brick height + joint). Divide wall area by brick face area. Add 5–10% waste. That’s it!

What’s the typical mortar joint thickness?

3/8 inch (≈ 10 mm) is common. Historic work or textured bricks might call for different joints—follow your plans/specs.

How many bricks per square foot of brick wall?

With U.S. standard bricks and a 3/8″ joint, expect roughly 6.8–7.2 bricks per ft². In metric, that’s around 73–80 per m² depending on size and joint.

How much should I add for waste?

Most projects do well with 5–10%. Add more for complex bonds, radius work, and lots of openings.

Can this also be used as a floor brick calculator?

Yes—just use brick length × width (not height) with joint and divide into your patio/walkway area. Same method!

Do I need to plan for concrete under my brick?

Many walls need footings, and many patios need bases. Use a concrete calculator to estimate bags or volume and check your concrete calculator price assumptions so your total budget is realistic.

Brick Calculator (interactive tool) — plug in numbers and get instant quantities.
Concrete Calculator (Bags) — for footings, pads, or bases (compare concrete calculator price by supplier).
Gravel Calculator — plan sub-base or drainage layers under patios/paths.
Asphalt Calculator — driveway and paving projects.
Fill Dirt Calculator — grading, leveling, and backfill.
Landscape Rock Calculator — decorative rock beds and edging.
River Rock Calculator — rounded cobbles and drainage channels.

Make Your Brick Order Easy

With a clear plan and a friendly brick calculator, estimating is quick: measure, plug in brick size and joint, add a reasonable waste factor, and you’re set. Round to full packs, protect your materials, and keep a few extras for repairs. Whether you’re building a cozy garden wall or laying a charming walkway, these steps help you stay on budget and on schedule—with results you’ll love.