Formula – How to calculate Celsius (°C)
| To Celsius (°C) | From Celsius (°C) | |
| Fahrenheit (°F) | (°F – 32) ÷ 1.8 = °C | (°C x 1.8) + 32 = °F |
| Kelvin (K) | K – 273.15 = °C | °C + 273.15 = K |
| Rankine (°R) | (°R – 491.67) ÷ 1.8 = °C | (°C + 273.15) x 1.8 = °R |
| Delisle (°D) | 100 – (°D x 2/3) = °C | (100 – °C) x 3/2 = °D |
| Rømer (°Rø) | (°Rø) – 7.5) x 40/21 = °C | (°C x 21/40) + 7.5 = °Rø |
| Newton (°N) | °N x 100/33 = °C | °C x 33/100 = °N |
| Réaumur (°Ré) | °Ré x 5/4 = °C | °C x 4/5 = °Ré |
What is the Celsius (°C) temperature scale?
Celsius is a temperature scale indexed on the freezing point of water (0°C) and the boiling point of water (100°C).
Along with Fahrenheit, it is one of the common temperature scales used in everyday life.