US Standard to Metric Conversion
| Brick Size | Height | Length | Depth | |||
| Inch | mm | Inch | mm | Inch | mm | |
| Metric Modular | 2 1/4 | 57 | 7 1/2 | 190 | 3 1/2 | 90 |
| Metric Norman | 2 1/4 | 57 | 11 1/2 | 290 | 3 1/2 | 90 |
| Modular | 2 1/4 | 57.2 | 7 5/8 | 193.7 | 3 5/8 | 92.1 |
| Norman | 2 1/4 | 57.2 | 11 5/8 | 295.3 | 3 5/8 | 92.1 |
| 2 5/8 Inch Bed King (Slim Kings) | 2 5/8 | 66.7 | 9 5/8 | 244.5 | 3 5/8 | 66.7 |
| King | 2 5/8 | 66.7 | 9 5/8 | 244.5 | 3 | 76.2 |
| Engineer Metric Norman (Norwegian) | 2 3/4 | 70 | 11 1/2 | 290 | 3 1/2 | 90 |
| Engineer Modular | 2 13/16 | 71.4 | 7 5/8 | 193.7 | 3 5/8 | 92.1 |
| Engineer Norman (Norwegian) | 2 13/16 | 71.4 | 11 5/8 | 295.3 | 3 5/8 | 92.1 |
| Engineer King | 2 13/16 | 71.4 | 9 5/8 | 244.5 | 3 | 76.2 |
| Premier Plus | 3 1/8 | 79 | 10 1/8 | 257 | 3 1/2 | 90 |
| Metric Jumbo | 3 1/2 | 90 | 11 1/2 | 290 | 3 1/2 | 90 |
| Economy Modular (Closure) | 3 5/8 | 92.1 | 7 5/8 | 193.7 | 3 5/8 | 92.1 |
| 3 Inch Bed Economy Norman (3 Inch Utility) | 3 5/8 | 92.1 | 11 5/8 | 295.3 | 3 | 76.2 |
| Economy Norman (Utility) | 3 5/8 | 92.1 | 11 5/8 | 295.3 | 3 5/8 | 92.1 |
| Double Economy Norman (Double Utility) | 7 5/8 | 193.7 | 11 5/8 | 295.3 | 3 5/8 | 92.1 |
