#### celsius to fahrenheit, centigrade to kelvin, fahrenheit to rankine, etc

### Common Temperature Unit Abbreviations

degrees Celsius or Centigrade = °C

degrees Fahrenheit = °F

Kelvin = K

degrees Rankine = °R

### Comparison of Temperature Scales

Temperatures can not be less than "Absolute Zero", the lowest temperature possible.

Absolute zero = 0 K = −273.15 °C = −459.67 °F = 0 R

### Learn how to convert temperatures

Formula for conversion from celsius to fahrenheit:

°F = ((9/5) x °C) + 32

Formula for conversion from fahrenheit to celsius:

°C = (5/9) x (°F-32)

What is 80 °F in °C?

°C = (5/9) x (80-32) = (0.556) * (48) = 26.7 °C

What is -40 °C in °F?

°F = ((9/5) x -40) + 32 = (-72) + 32 = -40 °F

so, -40 °C = -40 °F, an interesting coincidence!