Free temperature converter guide covering Celsius to Fahrenheit, Kelvin conversions. Learn the formulas, common reference points, and when to use each temperature scale.
Three different temperature scales, each with a different purpose. Celsius for everyday weather (most of the world). Fahrenheit for the US. Kelvin for science. Here's how they relate and how to convert between them.
Key Reference Points
- Water freezes - 0°C, 32°F, 273.15K
- Room temperature - 20°C, 68°F, 293.15K
- Body temperature - 37°C, 98.6°F, 310.15K
- Water boils - 100°C, 212°F, 373.15K
Quick Conversion Formulas
- Celsius to Fahrenheit - Multiply by 9/5, add 32
- Fahrenheit to Celsius - Subtract 32, multiply by 5/9
- Celsius to Kelvin - Add 273.15
- Kelvin to Celsius - Subtract 273.15
Our converters handle all six combinations instantly: Celsius to Fahrenheit, Fahrenheit to Celsius, Celsius to Kelvin, Kelvin to Celsius, Fahrenheit to Kelvin, and Kelvin to Fahrenheit.