• Jan 29, 2026 units and conversion factors caltech nce 1 inch = 2.54 centimeters 1 foot = 12 inches 1 meter = 100 centimeters 1 mile = 1,609.34 meters Mass and Weight 1 kilogram = 1,000 grams 1 pound = 0.453592 kilograms 1 ounce = 28.3495 grams Volume 1 liter = 1,000 milliliters 1 gallon (US) = 3. By Jett Cole
