Instantly convert between Celsius, Fahrenheit, and Kelvin. Perfect for science, cooking, weather, and engineering calculations.
Temperature measurement is crucial in daily life and scientific fields. The three main scales used today are Celsius, Fahrenheit, and Kelvin.
Also known as Centigrade, this scale defines the freezing point of water as 0°C and the boiling point as 100°C at standard atmospheric pressure. It is used in most countries and scientific contexts.
Primarily used in the United States, Bahamas, Cayman Islands, and Liberia. On this scale, water freezes at 32°F and boils at 212°F.
The base unit of temperature in the International System of Units (SI). It is used in science and engineering. Zero Kelvin (0 K) is absolute zero, where all thermal motion ceases.
Formula: (C × 1.8) + 32. Example: 20°C is 68°F.
Formula: C + 273.15. Example: 0°C is 273.15 K.
From Kitchens to Labs.
Following a US recipe that calls for 350°F but your oven is in Celsius? Checking the weather before a trip abroad? Use this tool to quickly make sense of the numbers.
High precision conversions.
Yes, -40 is the unique point where the Celsius and Fahrenheit scales intersect. -40°C = -40°F.
Kelvin is an absolute scale, not a relative one like Celsius or Fahrenheit. Therefore, it is written simply as K (Kelvin), not degrees Kelvin.