Length Converter
Convert between millimeters, centimeters, meters, inches, feet, and yards.
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Measurement Converters
Convert between common units for practical workshop, maintenance, household, and general use.
Volume Converter
Convert between metric volume, US customary volume, and UK imperial volume.
Result will appear here.
Socket Conversion Reference
Common approximate socket equivalents. Use as a guide and verify the best fit before applying force or torque.
| Imperial Socket | Common Metric Equivalent |
|---|---|
| 1/4" | 6 mm |
| 5/16" | 8 mm |
| 3/8" | 10 mm |
| 7/16" | 11 mm |
| 1/2" | 13 mm |
| 9/16" | 14 mm |
| 5/8" | 16 mm |
| 11/16" | 17 mm |
| 3/4" | 19 mm |
| 13/16" | 21 mm |
| 7/8" | 22 mm |
| 15/16" | 24 mm |
| 1" | 25 mm |
| 1-1/16" | 27 mm |
| 1-1/8" | 29 mm |
| 1-3/16" | 30 mm |
| 1-1/4" | 32 mm |
US / UK / Metric Quick Notes
Helpful reference values for differences between US customary, UK imperial, and metric measurements.
US Gallon
3.78541 L
UK Imperial Gallon
4.54609 L
US Fluid Ounce
29.5735 mL
UK Fluid Ounce
28.4131 mL
1 Inch
25.4 mm
1 Foot
0.3048 m