The Complete Guide to Unit Conversions

Unit conversion is one of the most common calculations people do, yet it is also one of the easiest to get wrong. This guide covers the key conversion relationships you need to know and when to use them.

Length Conversions

The most common length conversions involve switching between metric (meters, centimeters, kilometers) and imperial (feet, inches, miles) systems.

Key relationships: - 1 inch = 2.54 centimeters - 1 foot = 30.48 centimeters - 1 mile = 1.609 kilometers - 1 meter = 3.281 feet

Quick tricks: - To convert km to miles, multiply by 0.62 - To convert miles to km, multiply by 1.6 - To convert inches to cm, multiply by 2.54

Weight Conversions

Weight conversions are essential for cooking, shipping, and health.

Key relationships: - 1 pound = 0.454 kilograms - 1 kilogram = 2.205 pounds - 1 ounce = 28.35 grams - 1 stone = 6.35 kilograms

Temperature Conversions

Temperature uses three scales: Fahrenheit, Celsius, and Kelvin.

Formulas: - Celsius to Fahrenheit: (C × 9/5) + 32 - Fahrenheit to Celsius: (F - 32) × 5/9 - Celsius to Kelvin: C + 273.15

Quick references: - 0°C = 32°F (freezing point) - 100°C = 212°F (boiling point) - 37°C = 98.6°F (body temperature) - 20°C = 68°F (room temperature)

Digital Storage Conversions

Understanding bytes is essential in the digital age.

Decimal system (used by storage manufacturers): - 1 KB = 1,000 bytes - 1 MB = 1,000 KB - 1 GB = 1,000 MB - 1 TB = 1,000 GB

Binary system (used by operating systems): - 1 KiB = 1,024 bytes - 1 MiB = 1,024 KiB - 1 GiB = 1,024 MiB

This is why a "500 GB" hard drive shows as about 465 GB on your computer.

Use the Unit Converter or Bytes Converter for instant, accurate conversions.