Free Brick Quantity Calculator Online
When planning a masonry project—whether it’s a wall, fireplace, fence, or facade—knowing the exact number of bricks required is critical for budgeting, ordering, and avoiding waste. A Brick Quantity Calculator simplifies this task by using your wall dimensions, brick size, and mortar gaps to deliver a fast, accurate estimate of total bricks needed. Use the Construction Calculators Brick Calculator to make precise plans and minimize material waste.
This tool helps contractors, DIYers, architects, and builders reduce guesswork and stay within budget by providing the correct amount of bricks, mortar requirements, and material waste buffer for any brick structure.
What Is a Brick Quantity Calculator?
A Brick Quantity Calculator is a digital construction calculator designed to estimate how many bricks are needed for a given project. By entering the dimensions of the wall height, length, and thickness along with the size of a single brick (including the mortar joint), the calculator produces a precise estimate of the total brick count.
This tool is especially useful for building:
- Exterior and interior walls
- Structural columns
- Fireplaces and chimneys
- Garden fences
- Boundary walls
- Decorative brick features
Whether you’re calculating for 100 square feet or 10,000, this calculator provides the accurate calculations needed to avoid running short or over-ordering materials.
Why Accuracy in Brick Estimation Matters
Brick is sold by unit or by the thousand, and misjudging your total brick requirement can lead to costly overruns or construction delays. Precise estimates:
- Reduce material waste
- Prevent cost overruns
- Ensure timely project completion
- Help meet design specifications
- Simplify order quantities for suppliers
With modern building codes requiring precise documentation and material tracking, the brick quantity calculator is both a practical and professional solution.
Basic Formula to Calculate Brick Quantity
To manually calculate the number of bricks required, use the following formula: $$Number of Bricks=Brick Area (with mortar)Wall Area$$
Where:
- $$Wall Area = Wall Height × Wall Length$$
- $$Brick Area = (Length of Brick + Mortar Gap) × (Height of Brick + Mortar Gap)$$
If using a double-brick wall or cavity wall, remember to multiply the count accordingly.
Example:
$$Wall dimensions = 10 ft (height) × 20 ft (length)$$
$$Brick size = 7.5 in × 2.25 in$$
$$Mortar gap = 0.375 in$$
Convert all to feet:
- $$Brick length = 7.875 in = 0.656 ft$$
- $$Brick height = 2.625 in = 0.218 ft$$
- $$Wall area = 10 × 20 = 200 ft²$$
- $$Brick area = 0.656 × 0.218 = 0.143 ft²$$
$$\text{Number of Bricks} = \frac{200}{0.143} \approx 1399 \text{ bricks}$$
Always add 5–10% extra for breakage, cutting, and mortar gaps.
What Inputs Do You Need for the Brick Calculator?
To use the Brick Quantity Calculator, gather the following:
- Wall Length (in feet or meters)
- Wall Height
- Wall Thickness (for single or double-layer walls)
- Brick Length, Height, and Width (including mortar)
- Mortar Joint Thickness (typically 3/8 inch)
- Wastage Allowance (recommended: 5–10%)
These inputs allow the calculator to estimate both brick volume and total brick count needed for any kind of wall construction.
Common Brick Sizes Used in Calculations
Here are common brick sizes used in the U.S. and internationally:
| Type | Size (in inches) | Size (in mm) |
|---|---|---|
| Modular Brick | 7.625 × 2.25 × 3.625 | 194 × 57 × 92 |
| Standard Brick | 8 × 2.25 × 3.5 | 203 × 57 × 89 |
| Queen Brick | 7.625 × 2.75 × 2.75 | 194 × 70 × 70 |
| Engineer Brick | 7.625 × 2.75 × 3.625 | 194 × 70 × 92 |
Always include mortar thickness (3/8″ or 10 mm) in the final size to ensure accurate volume and correct amount of bricks.
Mortar Volume and Additional Material Estimation
In addition to bricks, you’ll need mortar a mix of cement, sand, and water to bond the bricks. A standard mix ratio is 1:6 (cement to sand). For every 1,000 bricks, approximately 7 cubic feet of mortar are needed.
$$\text{Mortar Volume} = \frac{\text{Number of Bricks} \times \text{Mortar Volume per Brick}}{1728}$$
Adjust based on brick type, spacing, and structure thickness. Some projects may also require:
- Reinforcement for structural support
- Concrete footing calculations
- Grout or insulation (for cavity walls)
Use a concrete calculator alongside the brick quantity calculator for comprehensive material planning.
Use Cases for the Brick Quantity Calculator
1. Exterior Wall Construction
Quickly determine how many modular bricks are needed for perimeter or garden walls.
2. Fireplace or Chimney Builds
Measure brick count for vertical stacks where load-bearing and throat depth are considerations.
3. Structural Columns
Estimate bricks required for cylindrical or rectangular pillars using surface area.
4. Decorative Walls or Facades
Account for bricks needed in design patterns, curves, or arches where brick dimensions and spacing vary.
5. Renovations and Repairs
Plan for partial brick replacement or spot fixes with exact count, avoiding over-purchasing.
Brick Count for Different Wall Sizes (Quick Reference)
| Wall Size (ft) | Approx. Bricks Needed (modular) |
|---|---|
| 10 × 10 | ~675 |
| 20 × 10 | ~1,350 |
| 30 × 10 | ~2,025 |
| 40 × 10 | ~2,700 |
| 50 × 10 | ~3,375 |
Add 5–10% for waste and cutting losses. Use these as base estimates; always rely on the calculator for precise numbers.
How to Handle Openings (Windows and Doors)
$$\text{Net Wall Area} = \text{Total Wall Area} – \text{Area of Doors/Windows}$$
Measure each opening’s width and height, multiply to find its area, then subtract it from the gross wall area. Apply the brick formula to this net area.
Tips for Accurate Calculations
- Measure twice before entering dimensions
- Include mortar joint size in brick dimensions
- Factor in design elements like arches or inlays
- Use proper brick density for structural walls
- Double the count for double-thick or cavity walls
- Use relevant calculators for concrete, mortar, and surface area
Frequently Asked Questions
Q1: How many bricks in a square foot?
Depending on size and mortar gap, usually 6.5 to 7.5 bricks per square foot for modular bricks.
Q2: How many bricks in 100 square feet?
Roughly 650 to 750 bricks, excluding waste. Use the calculator for precision.
Q3: What is the mortar volume for 1000 bricks?
About 7 cubic feet of mortar, though this can vary with joint thickness.
Q4: What’s the wastage factor for bricks?
Add 5–10% extra to your estimate to account for breakage and cutting.
Q5: Can I use the calculator for curved walls or arches?
Yes, but you must input curved surface area or break the wall into measurable sections. Some calculators have advanced geometry options.
Final Thoughts
A Brick Quantity Calculator is essential for planning efficient, cost-effective, and well-executed brickwork projects. It ensures that you order the right number of bricks, calculate material needs correctly, and avoid unnecessary waste or delays. By combining your wall dimensions, brick size, and joint spacing, this tool offers precise calculations to help you move from blueprint to build with confidence. For added accuracy across your project, use tools like the Board Foot Calculator, Cubic Yard Calculator, and Concrete Calculators to handle every phase of construction smoothly.
Whether you’re building concrete steps, stairs, slabs, or structural brick walls, this calculator should be a go-to tool in your construction toolkit. For better planning, pair it with a concrete volume calculator, cement calculator, and other construction calculators to cover all your project requirements from the ground up.