The standard co-ordinating size for brickwork is 225 mm x 112.5 mm x 75 mm (length x depth x height). This includes 10 mm mortar joints, so the standard size of a brick itself is 215 mm x 102.5 mm x 65 mm (length x depth x height).
This gives a ratio of 3:2:1, meaning that:
- With a standard mortar joint of 10 mm, a repeating unit of bricks laid in a stretcher bond will be 225 mm lengthwise and 75 mm in height.
- If bricks are laid cross-wise, two 102.5 mm depths plus two mortar joints gives the same repeating unit as the length of one brick plus one mortar joint, i.e. 225 mm.
- If they are laid height wise, three 65 mm heights plus three mortar joints gives the same repeating unit as the length of one brick plus one mortar joint, i.e. 225 mm.
|Type||Characteristics||Imperial length x depth x height||Metric length x depth x height (mm)|
|Blocks||Constructed using concrete or cement. They may include a hollow core to make them lighter and to improve their insulation.||440 x (varies) x 215|
|Modular||Commonly used for the construction of buildings and homes.||7-5/8" x 3-5/8" x 2-1/4"||194 x 92 x 57|
|Jumbo modular||7-5/8" x 3-5/8" x 2-3/4"||194 x 92 x 70|
|Queen||Slightly smaller and more cost effective than a modular brick.||9-5/8" x 3-1/8" x 2-3/4"||244 x 79 x 70|
|King||9-5/8" x 2-3/4" x 2-5/8"||244 x 76 x 67|
|Engineer||Used where strength and water/frost resistance are required. Very sturdy and reliable to use.||7-5/8" x 3-5/8" x 2-13/16"||194 x 92 x 71|
|Closure||Used to finish off a wall, especially at the corners||7-5/8" x 3-5/8" x 3-5/8"||194 x 92 x 92|
|Norwegian||Substantial bricks that can be used in load-bearing walls while still looking good. They have a natural beauty to them.||11-5/8" x 3-5/8" x 2-13/16"||295 x 92 x 71|
|Monarch||Commonly used for long stretches of wall and are very strong.||15-5/8" x 3-5/8" x 3-5/8"||397 x 92 x 92|
|Utility||Very versatile and can be used for a range of construction projects.||11-5/8" x 3-5/8" x 3-5/8"||295 x 92 x 92|
|Norman||These are classic industrial bricks for construction projects and commonly come in red or white.||11-5/8" x 3-5/8" x 2-1/4"||295 x 92 x 57|
|Roman||11-5/8" x 3-5/8" x 1-5/8"||295 x 92 x 41|
|Quad||7-5/8 x 3-5/8" x 7-5/8"||194 x 92 x 194|
|Danish hand mould||7-5/8" x 3-5/8" x 2-1/4"||194 x 92 x 57|
|Meridian||15-5/8" x 3-5/8" x 3-5/8"||397 x 92 x 92|
|Ambassador||15-5/8" x 3-5/8" x 2-1/4"||397 x 92 x 57|
 What are special bricks?
- Radial, tapered or arch bricks.
- Angle and cant bricks that form returns and chamfers.
- Bullnose bricks with rounded corners.
- Capping and coping bricks.
- Cill bricks.
- Plinth bricks.
- Slip bricks (thin bricks that can be used for cladding).
- Soldier bricks, that form returns for soldier courses.
This article was originally created by --Specified
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