Unit Conversion Cheat Sheet

Length Conversions

• 1 inch = 2.54 centimeters
• 1 foot = 30.48 centimeters (0.3048 meters)
• 1 yard = 0.9144 meters
• 1 mile = 1.609 kilometers
• 1 kilometer = 0.6214 miles

Weight Conversions

• 1 pound (lb) = 0.4536 kilograms
• 1 kilogram = 2.2046 pounds
• 1 ounce = 28.35 grams
• 1 stone = 6.35 kilograms (14 pounds)

Temperature Conversions

Converting between Fahrenheit and Celsius is one of the most common needs:

• Fahrenheit to Celsius: °C = (°F - 32) × 5/9
• Celsius to Fahrenheit: °F = (°C × 9/5) + 32

Key reference points: Water freezes at 0°C / 32°F and boils at 100°C / 212°F. Normal body temperature is approximately 37°C / 98.6°F.

Volume Conversions

• 1 US gallon = 3.785 liters
• 1 liter = 0.2642 US gallons
• 1 US cup = 236.6 milliliters
• 1 fluid ounce = 29.57 milliliters

Quick Estimation Tips

For rough mental conversions: multiply miles by 1.6 to get kilometers, multiply pounds by 0.45 to get kilograms, and multiply gallons by 3.8 to get liters. For temperature, a useful shortcut is to double the Celsius value and add 30 to get an approximate Fahrenheit reading.