Metric vs Imperial
The metric system is the international standard used by 195 out of 196 countries. The United States, Myanmar, and Liberia are the only nations that have not officially adopted the metric system. Understanding both systems is essential for international work, cooking, and travel.
Length Conversions
1 inch = 2.54 cm (exact). 1 foot = 30.48 cm. 1 mile = 1.609344 km. 1 metre = 3.28084 feet. These are the most commonly needed conversions in everyday life and professional contexts.
Weight Conversions
1 kilogram = 2.20462 pounds. 1 pound = 453.592 grams. 1 stone = 6.35029 kg. In cooking, 1 cup of water weighs approximately 237 grams, though this varies significantly by ingredient.
Temperature Conversions
Celsius to Fahrenheit: multiply by 9/5 then add 32. Fahrenheit to Celsius: subtract 32 then multiply by 5/9. Key reference points: 0°C = 32°F (freezing), 100°C = 212°F (boiling), 37°C = 98.6°F (body temperature).
