How to convert 100 degrees Fahrenheit to Celsius.
The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9:
T(°C) = (T(°F) - 32) × 5/9 = (100°F - 32) × 5/9 = 37.778°C
So 100 degrees Fahrenheit are equal to 37.778 degrees Celsius:
100°F = 37.778°C