Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin and Rankine. To go from °C to °F, multiply by 9/5 and add 32.
Enter a value
Result
20 celsius =
68 °F
20 °C → 68 °F
°F = °C × 9/5 + 32
Show the working
- Convert 20 °C to the base unit (kelvin): 293.15.
- Convert that to °F: 68.
20 °C in every unit
Key reference points
- Water freezes
- 0 °C = 32 °F
- Room temperature
- 20 °C = 68 °F
- Body temperature
- 37 °C = 98.6 °F
- Water boils
- 100 °C = 212 °F
- Absolute zero
- −273.15 °C = 0 K
Good to know: 0 °C is 32 °F and 100 °C is 212 °F. The two scales meet at −40.
About this tool
Convert between Celsius, Fahrenheit, Kelvin, and Rankine — used in science, cooking, weather, and engineering.
Formula
°F = °C × 9/5 + 32. K = °C + 273.15. °R = °F + 459.67.
Reference values
- 0°C = 32°F (freezing point of water)
- 100°C = 212°F (boiling point)
- 37°C = 98.6°F (body temperature)
Questions people ask
How do I convert Celsius to Fahrenheit?
Multiply by 1.8, then add 32. For example, 20 °C × 1.8 + 32 = 68 °F.
What is normal body temperature in Fahrenheit?
About 98.6 °F, which is 37 °C.
What is 180 °C in Fahrenheit for baking?
356 °F. Many recipes round this to 350 °F.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
Spotted a mistake? Tell us and we'll check it. How we check our calculators