1
Enter Temperature Value
Input the temperature you want to convert from your source scale.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
Water Freezes
0°C / 32°F / 273.15K
Room Temperature
20°C / 68°F / 293.15K
Water Boils
100°C / 212°F / 373.15K
Tip: Type in any field and the other temperatures will update automatically.
Pro Tip
Remember: water freezes at 0°C (32°F) and boils at 100°C (212°F). Use these reference points to quickly verify temperature conversions.
How to Use the Temperature Converter
2
Select Source Scale
Choose from Celsius, Fahrenheit, or Kelvin as your starting point.
3
Get Converted Value
Instantly see the converted temperature in your target scale.
Temperature Scales Explained
Three main temperature scales are used globally: Celsius (used in most countries), Fahrenheit (used in the US), and Kelvin (used in science). Each scale has different reference points and conversion formulas.
Understanding temperature conversions is useful for cooking, science, weather, and international communication. The formulas are simple: (C × 9/5) + 32 = F, and K = C + 273.15. Kelvin is an absolute scale starting at absolute zero.
Frequently Asked Questions
Historical reasons. Fahrenheit was common in English-speaking countries, Celsius in others, and Kelvin for scientific work.
Absolute zero (-273.15°C or -459.67°F) is the lowest possible temperature, where all molecular motion stops.
Kelvin is an absolute scale with no negative values, making calculations and ratios more intuitive in physics and chemistry.