Temperature Converter
About Temperature Units
Temperature is a measure of the average kinetic energy of particles in matter. The three main temperature scales are Celsius (°C), used in most countries; Fahrenheit (°F), primarily used in the United States; and Kelvin (K), the SI unit used in scientific calculations. The Kelvin scale starts at absolute zero (-273.15°C), the theoretical lowest possible temperature in the universe.
Did You Know?
When Anders Celsius first proposed his temperature scale in 1742, he actually defined 100°C as the freezing point of water and 0°C as its boiling point. Shortly after, Carl Linnaeus reversed the scale to what we use today, with 0°C as the freezing point and 100°C as the boiling point of water at standard atmospheric pressure.