100 degrees Fahrenheit is equal to 37.78 degrees Celsius.

Let's look into the conversion between Celsius and Fahrenheit scales in detail.

Explanation:

The formula to convert Fahrenheit to Celsius is given by; °C = [°F - 32] × (5/9)

Given that, F = 100

C = [100 - 32] × (5/9)

C = 68 × (5/9)

C = 37.7...

Thus, 100 °F is equivalent to 37.78 °C.