Spanner Size Conversion Chart
Inches | Millimeters | Spanner |
0.250 | 1/4 AF | |
0.276 | 7mm | 7mm |
0.313 | 5/16 AF | |
0.315 | 8mm | 8mm |
0.344 | 11/32 AF; 1/8 Wworth | |
0.354 | 9mm | 9mm |
0.375 | 3/8 AF | |
0.394 | 10mm | 10mm |
0.433 | 11mm | 11mm |
0.438 | 7/16 AF | |
0.445 | 3/16 Wworth; 1/4 | |
0.472 | 12mm | 12mm |
0.500 | 1/2 AF | |
0.512 | 13mm | |
0.525 | 1/4 Wworth; 5/16 BSF | |
0.551 | 14mm | |
0.563 | 9/16 AF | |
0.591 | 15mm | |
0.600 | 5/16 Wworth; 3/8 BSF | |
0.625 | 5/8 AF | |
0.630 | 16mm | 16mm |
0.669 | 17mm | 17mm |
0.686 | 11/16 AF | |
0.709 | 18mm | 18mm |
0.710 | 3/8 Wworth; 7/16 BSF | |
0.748 | 19mm | 19mm |
0.750 | 3/4 AF | |
0.787 | 20mm | 20mm |
0.813 | 13/16 AF | |
0.820 | 7/16 Wworth; 1/2 BSF | |
0.826 | 21mm | 21mm |
0.866 | 22mm | 22mm |
0.875 | 7/8 AF | |
0.905 | 23mm | 23mm |
0.920 | 1/2 Wworth; 9/16 BSF | |
0.938 | 15/16 AF | |
0.945 | 24mm | 24mm |
0.984 | 25mm | 25mm |
1.000 | 1in AF | |
1.010 | 9/16 Wworth; 5/8 BSF | |
1.024 | 26mm | 26mm |
1.063 | 27mm | 1 1/16 AF; 27mm |
1.100 | 5/16 Wworth; 11/16 BSF | |
1.125 | 1 1/8 AF | |
1.181 | 30mm | 30mm |
1.200 | 11/16 Wworth; 3/4 BSF | |
1.250 | 1 1/4 AF | |
1.260 | 32mm | 32mm |
1.300 | 3/4 Wworth; 7/8 BSF | |
1.313 | 1 5/16 AF | |
1.390 | 13/16 Wworth; 15/16 BSF | |
1.417 | 36mm | 36mm |
1.418 | 1 7/16 AF | |
1.480 | 7/8 Wworth; 1in BSF | |
1.500 | 1 1/2 AF | |
1.575 | 40mm | 15/16 AF; 40mm exactly |
1.614 | 41mm | 41mm |
1.625 | 1 5/8 AF | |
1.670 | 1 in Wworth; 1 1/8 BSF | |
1.688 | 1 11/16 AF | |
1.811 | 46mm | 46mm |
1.813 | 1 13/16 AF | |
1.860 | 1 1/8 Wworth; 1 1/4 BSF | |
1.875 | 1 7/8 AF | |
1.969 | 50mm | 50mm |
2.000 | 2in AF | |
2.050 | 1 1/4 Wworth; 1 3/8 BSF | |
2.165 | 55mm | 55mm |
2.362 | 60mm | 60mm |