Unit Conversion Made Easy: A Complete Guide
Master unit conversions for length, weight, temperature, and more. Learn conversion formulas and common conversion factors.
Unit conversion is essential for cooking, travel, science, and international communication. Understanding the relationships between units makes conversions straightforward.
Metric vs Imperial Systems
The metric system (meters, grams, liters) uses base-10 conversions, making calculations simple. The imperial system (feet, pounds, gallons) uses irregular conversions (12 inches per foot, 16 ounces per pound).
Common Conversion Factors
- Length: 1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1.609 km
- Weight: 1 pound = 0.4536 kg, 1 ounce = 28.35 g
- Temperature: °F = (°C × 9/5) + 32, °C = (°F - 32) × 5/9
- Volume: 1 gallon = 3.785 liters, 1 cup = 236.6 ml
Dimensional Analysis
The foolproof method: multiply by conversion factors that equal 1. Units cancel like algebra. Example: 5 miles × (1.609 km / 1 mile) = 8.045 km.
Common Cooking Conversions
3 teaspoons = 1 tablespoon, 4 tablespoons = 1/4 cup, 2 cups = 1 pint, 2 pints = 1 quart, 4 quarts = 1 gallon.