Here's how to convert 101.7 degrees Fahrenheit to Celsius:

Formula:

Celsius = (Fahrenheit - 32) * 5/9

Calculation:

1. Subtract 32: 101.7 - 32 = 69.7

2. Multiply by 5/9: 69.7 * (5/9) = 38.72

Answer: 101.7 degrees Fahrenheit is equal to 38.72 degrees Celsius.