Unlike the metric system, where everything is neat and organized in units of ten, the U.S. system of length does not seem to be based on any one number. This table summarizes the different units of length. Although not used in cooking, I have included larger units of length also such as the mile.
LENGTH CONVERSIONS
LENGTH U.K. / U.S. UNITS METRIC UNITS 1 inch = 1/12 foot 2.54 centimeters 1 foot = 12 inches 30.48 centimeters 1 yard = 36 inches 91.44 centimeters 1 millimeter = 0.03937 inches 0.1 centimeter 1 centimeter = 0.3937 inches 1.0 centimeters 1 meter = 39.37 inches 100 centimeters
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| USA | Inch | Foot | Yard |
| 1 inch = | 1 | 1/12 | 1/36 |
| 1 foot = | 12 | 1 | 1/3 |
| 1 yard = | 36 | 3 | 1 |
| 1 mile = | - - - | 5280 | 1760 |