Brick Calculator

Use this calculator to estimate how many bricks you would need to construct a wall of certain dimensions. This brick calculator supports half-brick and single-brick thick walls, as well as mortar margin specification. It will also output the amount of mortar needed in cubic feet or cubic meters.

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Calculating how many bricks you need

First, to calculate how many bricks you need to construct an internal or external wall, you need to know the dimensions of the wall as well as the dimensions of a single brick. These can be acquired from the building plan and the manufacturer specifications, respectively. Then you need to know how thick the wall needs to be, with the two standard options being half-brick and single-brick. Half-brick means you will be stacking the bricks with their longest narrow side on the face of the wall and single-brick means you will be stacking them with their shorter narrow side on the face of the wall. Consequently, the wall thickness equals the brick's width in a half-brick wall, while a single brick wall is as thick as length of the bricks used. Both methods are supported by our online brick calculator.

half brick single brick wall stretcher header

Either way the basic formula to calculate the number of bricks required for a wall is to divide the volume of the wall by the volume of a single brick:

Number of bricks = wall volume / single brick volume

Real-world situations require a more complex calculation, which is why our calculator supports the specification of the thickness of the mortar joint between the bricks. Usual values are half an inch or 10-13 mm, but this will depend on your chosen construction approach. Using wider margin will obviously reduce the number of bricks needed, but it has its effect on the constructive strength of the wall and results in more mortar being required.

Finally, you need to enter your expected percentage of wasted bricks. Waste usually occurs due to bricks being broken during transportation, handling, manipulation, but also due to the need to cut some bricks in pieces in order to have a good-looking wall. Some of these pieces cannot be used and need to be discarded. Allowing for between 5-10% waste is a good practice.

brick wall

Does the calculation require a particular bond?

No, the result of this brick calculator should be applicable to any type of bond. You can use the bricks in any bond you like: stretcher bond, header bond, English bond, single or double Flemish bond, facing bond, Dutch bond, English cross bond, brick on edge bond, raking, zigzag, garden wall, etc. Since we use the volume in the calculations, as long as the thickness of the wall is correctly specified the number of bricks should not be affected.

However, it is worth noting that some kinds of bonds might result in a higher percentage of wasted bricks, so you might want to adjust for that.

Cite this calculator & page

If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation:
Georgiev G.Z., "Brick Calculator", [online] Available at: https://www.gigacalculator.com/calculators/brick-calculator.php URL [Accessed Date: 27 May, 2019].