# LEGO 1×1 brick and system grid (8 mm pitch) > What are the dimensions of the LEGO 1×1 brick and system grid? - Category: Everyday objects › Building bricks - Kind: Modern device - Basis: Secondary source: Brighton Toy and Model Museum (copy of the maker's figures; the maker publishes none directly) - Page: https://xemstudio.com/objects/lego-1x1-brick-grid/ · JSON: https://xemstudio.com/api/geometry?object=lego-1x1-brick-grid · Plain text: https://xemstudio.com/objects/lego-1x1-brick-grid/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license - Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/) ## Overall (mm) | length | width | height | |---|---|---| | 8.0 | 8.0 | 9.6 | **Exact dimensions.** True size, with no printing tolerance added. ## Notes - The LEGO system is built on an 8 mm square grid; a brick body is 9.6 mm tall, three plates of 3.2 mm. - Numbers come from a museum write-up that cites LEGO's own patent for the 4.8 mm stud. - No CAD file: the maker publishes only overall sizes, and a plain box or cylinder is not useful design geometry. The table is the published data; parts with real geometry have their own pages. - Secondary source: the numbers come from a retailer or magazine copy of the maker's specification. ## Sizes | dimension | value | |---|---| | Grid (stud pitch) | 8 mm | | Brick body height | 9.6 mm (three plates) | | Stud height | 1.6 mm | | Stud diameter | 4.8 mm nominal (LEGO patent WO2019106129); measured about 4.88–4.89 mm | | Clearance | bricks are nominal grid multiples minus about 0.1 mm | ## Where the files are - Brighton Toy and Model Museum: [Lego dimensions](https://www.brightontoymuseum.co.uk/index/Lego_dimensions) — web — Publisher's page; dimensions are facts ## Questions **What is the LEGO stud pitch?** 8 mm. **How tall is a LEGO brick?** 9.6 mm without the stud; a stud adds 1.6 mm. ## Fits with - [LEGO 1×1 plate (3.2 mm)](https://xemstudio.com/objects/lego-1x1-plate/)