Celsius, Fahrenheit, and Kelvin are three scales for describing temperature. The same temperature gets a different number on each scale. Temperature Converter shows all three numbers together.
Convert boiling water
Choose Celsius (°C) under Unit, then type 100 in Temperature. In All units, you should see 100 °C, 212 °F, and 373.15 K. These are three ways to describe the same temperature, not three different temperatures.
Now choose Fahrenheit (°F) and replace the input with 212. You should see 100 °C again. The tool reads the number according to the Unit you selected; changing the unit without changing the number asks a different question. Kelvin uses K, not a degree symbol.
If you see an error
The input must be a number. A temperature below absolute zero is rejected; on the Celsius scale, that is below -273.15 °C. If you meant a negative temperature, include the minus sign. Check both the number and its starting unit before copying a result. The tool rounds displayed values to two decimal places.
Where your input goes
Processing runs in your browser. The tool does not upload your input to ilham.dev.
Related guide
For more background, read Calculators and Unit Conversion.
Questions you might have
- Is there a temperature where Celsius and Fahrenheit agree?
- Yes, at −40 degrees. It is the single point where the two scales cross.