Temperature Unit Converter

Celsius (°C): The most widely used temperature scale in the world. Water freezes at 0°C and boils at 100°C at standard atmospheric pressure.

Fahrenheit (°F): Commonly used in the United States. Water freezes at 32°F and boils at 212°F at standard atmospheric pressure.

Kelvin (K): The SI unit of temperature. It uses the same increment as Celsius but starts at absolute zero (-273.15°C). Water freezes at 273.15K and boils at 373.15K.

Rankine (°R): An absolute temperature scale that uses the Fahrenheit degree. Absolute zero is 0°R.

Réaumur (°Re): An obsolete temperature scale where water freezes at 0°Re and boils at 80°Re.

Delisle (°D): A historical scale where water boils at 0°D and freezes at 150°D.

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

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

Celsius to Kelvin: K = °C + 273.15

Kelvin to Celsius: °C = K - 273.15

Fahrenheit to Kelvin: K = (°F - 32) × 5/9 + 273.15

Kelvin to Fahrenheit: °F = (K - 273.15) × 9/5 + 32

Celsius to Rankine: °R = (°C + 273.15) × 9/5

Rankine to Celsius: °C = (°R × 5/9) - 273.15

Celsius to Réaumur: °Re = °C × 4/5

Réaumur to Celsius: °C = °Re × 5/4

Celsius to Delisle: °D = (100 - °C) × 3/2

Delisle to Celsius: °C = 100 - (°D × 2/3)

Weather Forecasting: Celsius is used in most countries, while Fahrenheit is primarily used in the US.

Cooking: Recipes may specify oven temperatures in either °F or °C depending on region.

Scientific Research: Kelvin is the standard in scientific research, particularly in physics and chemistry.

Medicine: Body temperature is measured in °C in most countries, but °F in the US.

Industry: Manufacturing processes often use Celsius or Kelvin for temperature control.