Brick Calculator
Estimate Bricks, Mortar & Project Costs
Planning to build a brick boundary wall, a fireplace veneer, or laying a herringbone brick patio? Getting an accurate material count is crucial: buying too few bricks leaves you with color-batch mismatching later, while buying too many leaves heavy pallets in your yard. Use our free calculator to estimate the exact brick count, mortar bags, and material cost.
How to Calculate Bricks
Calculating bricks depends on finding the visible face area of a single brick including the mortar joint, and dividing the total project surface area by it:
- Wall Projects: The visible side of a laid brick is its length and height (8" × 2.25" for a standard US brick). The face area is: `(Length + Joint) × (Height + Joint)`.
- Patio & Pavement: The visible side of the brick is its length and width (8" × 4"). The face area is: `(Length + Joint) × (Width + Joint)`.
- Mortar Joints: A standard mortar joint is **3/8 inch (0.375")**. For patios laid dry-swept with sand, the joint is zero.
- Waste Buffer: Always add a **10% waste buffer** to cover half-bricks, corner cuts, and accidental breakages.
Sizing & Estimating Mortar Bags
For wet masonry brick walls, a 80-lb bag of Type S or Type N mortar mix typically lays about **30 to 35 standard bricks**. Our calculator uses a standard ratio of **30 bricks per 80-lb bag** of mortar. For patios built on sand bases, mortar is not required; instead, joint sand is swept between bricks.
Standard Brick Grades Comparison
| Grade | Name | Minimum Strength | Best For |
|---|---|---|---|
| SW | Severe Weathering | 3,000 PSI | Ground contact, foundations, retaining walls |
| MW | Moderate Weathering | 2,500 PSI | Exterior walls, above-grade vertical structures |
| NW | Negligible Weathering | 1,500 PSI | Interior brickwork, non-load-bearing applications |
Frequently Asked Questions
What is the difference between red clay bricks and concrete bricks?
Red clay bricks are made from clay kiln-fired at high temperatures, making them highly durable and resistant to weathering. Concrete bricks are cast from aggregate concrete, which is cheaper but slightly more porous.
How many bricks are in a pallet?
A standard pallet of US red bricks contains **500 bricks**. Pallets are extremely heavy, weighing about 2,000 to 2,400 pounds, requiring a forklift or flatbed truck with a liftgate for delivery.
- Brick Industry Association (BIA) - Technical Notes on Brick Construction standards.
- ASTM International - ASTM C62 Specification for Structural Clay Building Brick.