Most forklift forks are made to metric equivalents, based on the most popular
| Nominal width | Metric | Inches |
| 4” | 100mm | 3.94 |
| 5” | 122mm | 4.8 |
| 6” | 150mm | 5.91 |
| 7” | 180mm | 7.09 |
| 8” | 200mm | 7.87 |
| 10” | 250mm | 9.84 |
This may be useful information when considering accessories like Fork Extensions, Fork Mounted Booms, Trailer Spotters, Self Dumping Hoppers, Work Platforms, or any product that mounts to the forks.