Unit Converter
Convert between units of length, weight, temperature, volume, and speed instantly.
How this is calculated
Converts via base unit. Temperature uses special formulas: °F = °C × 9/5 + 32, K = °C + 273.15.
Frequently Asked Questions About Unit Converter
A unit converter transforms measurements between different systems (metric and imperial) for length, weight, temperature, volume, and speed.
What is the difference between metric and imperial units?
The metric system (used worldwide) is based on powers of 10 (meters, kilograms, liters), making conversions simple. The imperial system (used in the US) has irregular conversions (12 inches = 1 foot, 5280 feet = 1 mile). Metric is more logical; imperial is traditional.
How do I convert between Celsius and Fahrenheit?
Use these formulas: °F = (°C × 9/5) + 32 or °C = (°F − 32) × 5/9. For example, 0°C = 32°F, 100°C = 212°F. This calculator handles the conversion automatically.
What is Kelvin used for?
Kelvin is the absolute temperature scale used in science. 0 K = −273.15°C (absolute zero). Most everyday temperature uses Celsius or Fahrenheit, but physics and chemistry use Kelvin.
How many kilometers are in a mile?
1 mile = 1.60934 kilometers. Conversely, 1 km = 0.621371 miles. Use this calculator for instant conversion.
What is the conversion between pounds and kilograms?
1 kilogram = 2.20462 pounds. 1 pound = 0.453592 kilograms. These are the standard conversions between metric and imperial weight.
Can I convert between liters and gallons?
1 gallon (US) = 3.78541 liters. 1 liter = 0.264172 gallons. This calculator supports volume conversions between common units.