🌡️ Temperature converter
Convert between Celsius, Fahrenheit, Kelvin and Rankine. Enter a value and pick its unit to see it in every other unit.
Popular temperature conversions
| Conversion | Rate |
|---|---|
| Celsius to Fahrenheit | °F = °C × 9/5 + 32 |
| Fahrenheit to Celsius | °C = (°F − 32) × 5/9 |
| Celsius to Kelvin | K = °C + 273.15 |
| Kelvin to Celsius | °C = K − 273.15 |
| Fahrenheit to Kelvin | K = (°F − 32) × 5/9 + 273.15 |
| Kelvin to Fahrenheit | °F = (K − 273.15) × 9/5 + 32 |
Quick answers
- 0 Celsius to Fahrenheit
- 50 Celsius to Fahrenheit
- 100 Celsius to Fahrenheit
- 150 Celsius to Fahrenheit
- 200 Celsius to Fahrenheit
- 300 Celsius to Fahrenheit
- 0 Fahrenheit to Celsius
- 100 Fahrenheit to Celsius
- 200 Fahrenheit to Celsius
- 300 Fahrenheit to Celsius
- 400 Fahrenheit to Celsius
- 500 Fahrenheit to Celsius
About temperature units
Temperature scales do not share a zero point, so you cannot convert them by multiplying alone. Celsius to Fahrenheit is F = C × 9/5 + 32, and Celsius to Kelvin is K = C + 273.15.
Two useful reference points: −40 is the same in Celsius and Fahrenheit, and a comfortable room is about 20–22 °C or 68–72 °F.
Temperature units
| Unit | Symbol | In kelvins |
|---|---|---|
| Degree Celsius | °C | — |
| Degree Fahrenheit | °F | — |
| Kelvin | K | — |
| Degree Rankine | °R | — |
All temperature conversions
From Celsius
From Fahrenheit
From Kelvin
From Rankine
Temperature unit definitions
- Degree Celsius (°C)
- On the Celsius scale water freezes at 0 °C and boils at 100 °C at sea level. Almost every country uses it for weather and cooking.
- Degree Fahrenheit (°F)
- On the Fahrenheit scale water freezes at 32 °F and boils at 212 °F. It is the everyday scale in the United States.
- Kelvin (K)
- The kelvin is the SI unit of temperature. It starts at absolute zero, so 0 K is −273.15 °C, and one kelvin is the same size as one degree Celsius.
- Degree Rankine (°R)
- The Rankine scale starts at absolute zero, like the kelvin, but uses degrees the size of Fahrenheit degrees. It appears in some US engineering work.