Find how much a brick weighs in pounds or kilograms using typical brick sizes and densities, for one brick, a pallet or any quantity, or enter your own.
- All Construction Calculators
- All Weight Calculators
- Bricks Per Square Foot Calculator
- Brick Calculator
- Brick Circle Calculator
Brick Weight Formula
The brick weight calculation is based on volume multiplied by density. The calculator converts dimensions to meters and works in kilograms internally. It estimates total weight for a whole-brick quantity, or whole bricks within an available payload. The core/hole correction applies only to intentional geometric voids and must match the density basis.
- W = brick weight
- L = brick length
- Wd = brick width
- T = brick thickness
- ρ = density consistent with the selected volume basis; v is intentional core/hole volume as a percentage
For a solid brick with no geometric void correction, the same mass-volume relationship can be rearranged algebraically (reference formulas):
Choose Weight for a brick quantity or Whole bricks within a payload. Pick a brick material and size, or choose Custom to enter your own density or dimensions; the payload calculation rounds down. The material presets are typical densities, not certified product properties. If density is already measured as mass divided by the whole outside volume, use 0% additional void correction.
Brick wall weight per square meter
Select Brick wall weight per area for an area-average estimate of bricks plus mortar. Enter the net wall face area, excluding openings, choose one brick leaf or two leaves with a filled joint, select the brick size and density, and enter the in-place mortar density. Use the density for the relevant moisture condition from your product or project data, not the loose-powder bulk density. The optional settings let you change the nominal 10 mm joint and the fraction of unfilled holes in each brick.
With all dimensions in meters, let A be net wall area, n the number of leaves (1 or 2), L, Wd, H the brick dimensions and j the joint thickness. The model uses:
- Equivalent bricks per m²: N = n / ((L + j) × (H + j)).
- Wall thickness: t = n × Wd + (n − 1) × j.
- Mortar volume per m²: Vm = t − N × L × Wd × H.
- Mass per m²: q = N × L × Wd × H × (1 − v/100) × ρbrick + Vm × ρmortar.
- Total wall mass: M = A × q.
For example, a single leaf of 215 × 102.5 × 65 mm solid bricks with 10 mm joints, brick density 1,920 kg/m³ and an illustrative entered mortar density of 2,000 kg/m³ has about 59.259 equivalent bricks and 0.017615 m³ of mortar per m². The estimate is 198.21 kg/m², or 1,982.09 kg for 10 m². The selected two-leaf model is 215 mm thick for those dimensions. Standard UK dimensions and the nominal 10 mm joint are described in the brick manufacturer’s dimension guidance.
This uniform full-joint model uses fractional brick counts to estimate mass, not bricks to order. It does not model a cavity, mortar filling brick holes/frogs, coatings, reinforcement, waste or other loads. Estimate cavity-wall leaves separately; verify actual material quantities and densities for structural loading.
Common Brick Sizes and Approximate Weights
Actual brick weight varies by material, holes, moisture, and manufacturer. These values are useful for checking whether your result is in a reasonable range.
| Brick Type | Typical Size | Approximate Weight |
|---|---|---|
| Standard modular brick | 7.625 in × 3.625 in × 2.25 in | 4 to 5 lb |
| Engineering brick | About 8 in × 4 in × 2.25 in | 5 to 6.5 lb |
| Concrete brick | About 8 in × 4 in × 2.25 in | 5 to 7 lb |
| Fire brick | 9 in × 4.5 in × 2.5 in | 7 to 9 lb |
Typical Brick Density Values
| Material | Typical Density | Equivalent Approximation |
|---|---|---|
| Clay brick | 110 to 130 lb/ft³ | 0.064 to 0.075 lb/in³ |
| Concrete brick | 120 to 150 lb/ft³ | 0.069 to 0.087 lb/in³ |
| Fire brick | 130 to 150 lb/ft³ | 0.075 to 0.087 lb/in³ |
Brick Weight Examples
Example 1: Find the weight of a brick
Suppose a brick is 8 in long, 4 in wide, and 2.25 in thick. Its density is 120 lb/ft³.
First convert density to lb/in³:
Then multiply volume by density:
The brick weighs about 5.00 lb.
Example 2: Find density from brick weight
Suppose a brick measures 7.625 in × 3.625 in × 2.25 in and weighs 4.5 lb.
The density is about 0.07236 lb/in³, which is approximately 125 lb/ft³.
Brick Weight Calculator FAQ
Why does brick density matter?
Density tells you how much material weight is packed into a given volume. Two bricks with the same dimensions can have different weights if one is made from denser clay, concrete, or refractory material. Hollow or cored bricks also weigh less than solid bricks of the same outside size.
Should mortar be included in brick weight?
The brick quantity and payload modes include bricks only. The Brick wall weight per area mode adds the modeled mortar joints using your entered in-place mortar density. It excludes cavities, mortar-filled holes/frogs, finishes and other materials; account for those separately when estimating a complete wall.
Why is my calculated brick weight different from the supplier’s listed weight?
Supplier weights often account for the actual manufactured shape, cores, recesses, material mix, and moisture content. Use the product’s measured density on a consistent volume basis. Subtract intentional holes or frogs only when using net material-body density; do not subtract microscopic porosity again. Verify actual product weight before shipping.
