Wrench Size Conversion Chart – Metric (mm) to SAE (Inches)
| Standard SAE U.S. Wrench/Spanner Size (inches) | Metric Wrench/Spanner Size (mm) |
|---|---|
| 1/8 | 3.18 |
| 5/32 | 3.97 |
| 4 | |
| 3/16 | 4.76 |
| 5 | |
| 13/64 | 5.16 |
| 7/32 | 5.56 |
| 15/64 | 6.05 |
| 6 | |
| 1/4 | 6.35 |
| 17/64 | 6.75 |
| 7 | |
| 9/32 | 7.14 |
| 5/16 | 7.94 |
| 8 | |
| 11/32 | 8.73 |
| 9 | |
| 3/8 | 9.53 |
| 10 | |
| 11 | |
| 7/16 | 11.11 |
| 15/32 | 11.91 |
| 12 | |
| 1/2 | 12.7 |
| 13 | |
| 17/32 | 13.49 |
| 14 | |
| 9/16 | 14.29 |
| 15 | |
| 19/32 | 15.08 |
| 5/8 | 15.88 |
| 16 | |
| 21/32 | 16.67 |
| 17 | |
| 11/16 | 17.46 |
| 18 | |
| 19 | |
| 3/4 | 19.05 |
| 25/32 | 19.84 |
| 20 | |
| 13/16 | 20.64 |
| 21 | |
| 22 | |
| 7/8 | 22.23 |
| 23 | |
| 29/32 | 23.02 |
| 15/16 | 23.81 |
| 24 | |
| 31/32 | 24.61 |
| 25 | |
| 1 | 25.40 |
| 26 | |
| 1 1/16 | 26.99 |
| 27 | |
| 28 | |
| 1 1/8 | 28.58 |
| 29 | |
| 30 | |
| 1 3/16 | 30.16 |
| 31 | |
| 1 1/4 | 31.75 |
| 32 | |
| 33 | |
| 1 5/16 | 33.34 |
| 34 | |
| 1 3/8 | 34.93 |
| 35 | |
| 36 | |
| 1 7/16 | 36.51 |
| 38 | |
| 1 1/2 | 38.10 |
| 39 | |
| 1 9/16 | 39.69 |
| 40 | |
| 41 | |
| 1 5/8 | 41.28 |
| 1 11/16 | 42.86 |
| 1 3/4 | 44.45 |
| 46 | |
| 1 13/16 | 46.04 |
| 1 7/8 | 47.63 |
| 1 15/16 | 49.21 |
| 50 | |
| 2 | 50.80 |
| 51 | |
| 2 1/8 | 53.96 |
| 54 | |
| 2 1/4 | 57.15 |
| 2 3/8 | 60.33 |
| 2 1/2 | 63.5 |
- 1 inch = 25.4 mm
- 1 mm = 0.0394 inch
- Length Units Converter
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