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Brick and concrete block sizes: US modular, UK, DIN 105 and CMU 4 to 12 in
What size is a standard brick? · Standard part · basis: ASTM C216 / BIA modular sizes (nominal minus a 3/8 in joint), BS EN 771-1 UK work size, DIN 105 formats, ASTM C90 CMU actual sizes (nominal minus 3/8 in)
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 12 in table
Notes
- Concrete blocks are drawn as their outside envelope; core shapes vary by maker.
Sizes
| unit | length_mm | width_mm | height_mm |
|---|---|---|---|
| US modular brick | 193.7 | 92.1 | 57.1 |
| US standard brick | 203.2 | 92.1 | 57.1 |
| US queen brick | 193.7 | 69.8 | 69.8 |
| UK brick (BS EN 771-1 work size) | 215.0 | 102.5 | 65.0 |
| DIN 105 NF (Normalformat) | 240.0 | 115.0 | 71.0 |
| DIN 105 DF (Dünnformat) | 240.0 | 115.0 | 52.0 |
| DIN 105 2DF | 240.0 | 115.0 | 113.0 |
| CMU 4×8×16 | 396.9 | 92.1 | 193.7 |
| CMU 6×8×16 | 396.9 | 142.9 | 193.7 |
| CMU 8×8×16 | 396.9 | 193.7 | 193.7 |
| CMU 10×8×16 | 396.9 | 244.5 | 193.7 |
| CMU 12×8×16 | 396.9 | 295.3 | 193.7 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ASTM | ASTM C216 Facing brick; ASTM C90 Loadbearing concrete masonry units | standard | ASTM; dimensions are facts verify |
| DIN | DIN 105 Clay masonry units | standard | DIN; dimensions are facts verify |
Free files
★ Free files 12 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| us-modular-brick | US modular brick: 193.7 × 92.1 × 57.1 mm | STEP · STL |
| us-standard-brick | US standard brick: 203.2 × 92.1 × 57.1 mm | STEP · STL |
| us-queen-brick | US queen brick: 193.7 × 69.8 × 69.8 mm | STEP · STL |
| uk-brick | UK brick (BS EN 771-1 work size): 215.0 × 102.5 × 65.0 mm | STEP · STL |
| din-105-nf | DIN 105 NF (Normalformat): 240.0 × 115.0 × 71.0 mm | STEP · STL |
| din-105-df | DIN 105 DF (Dünnformat): 240.0 × 115.0 × 52.0 mm | STEP · STL |
| din-105-2df | DIN 105 2DF: 240.0 × 115.0 × 113.0 mm | STEP · STL |
| cmu-4x8x16 | 4 in CMU (concrete block), 4×8×16 nominal: actual 3-5/8 × 7-5/8 × 15-5/8 in envelope (cores not drawn) | STEP · STL |
| cmu-6x8x16 | 6 in CMU (concrete block), 6×8×16 nominal: actual 5-5/8 × 7-5/8 × 15-5/8 in envelope (cores not drawn) | STEP · STL |
| cmu-8x8x16 | 8 in CMU (concrete block), 8×8×16 nominal: actual 7-5/8 × 7-5/8 × 15-5/8 in envelope (cores not drawn) | STEP · STL |
| cmu-10x8x16 | 10 in CMU (concrete block), 10×8×16 nominal: actual 9-5/8 × 7-5/8 × 15-5/8 in envelope (cores not drawn) | STEP · STL |
| cmu-12x8x16 | 12 in CMU (concrete block), 12×8×16 nominal: actual 11-5/8 × 7-5/8 × 15-5/8 in envelope (cores not drawn) | STEP · STL |
Let your AI pull this. Add
Set it up →https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=bricks-and-blocks
Fits with
Questions
US modular brick?
7-5/8 × 3-5/8 × 2-1/4 in.
8×8×16 block?
7-5/8 × 7-5/8 × 15-5/8 in.