Convert Celsius & Fahrenheit
- Celsius (°C): Used by most of the world. Water freezes at 0°C and boils at 100°C.
- Fahrenheit (°F): Used primarily in the US. Water freezes at 32°F and boils at 212°F.
- Kelvin (K): Used in scientific applications.
Understanding Temperature
Weather
Quickly convert weather forecasts when traveling between countries with different systems.
Cooking
Ensure your oven is at the right temperature for recipes from around the world.
Frequently Asked Questions
What is the formula for C to F?
Multiply by 1.8 (or 9/5) and add 32. Formula: (°C × 9/5) + 32 = °F.
Why does Kelvin have no degree symbol?
Kelvin is an absolute thermodynamic temperature scale and is used as a unit itself, not degrees relative to a scale.
What is absolute zero?
0 Kelvin (approx -273.15°C) is absolute zero, the theoretical point where all molecular motion ceases.