Here's how to convert 101.4 degrees Fahrenheit to Celsius:

Formula:

Celsius = (Fahrenheit - 32) * 5/9

Calculation:

1. Subtract 32: 101.4 - 32 = 69.4

2. Multiply by 5/9: 69.4 * 5/9 = 38.56

Therefore, 101.4 degrees Fahrenheit is equal to 38.56 degrees Celsius.