Here's how to convert 140 degrees Fahrenheit to Celsius:

Formula:

* C = (F - 32) * 5/9

Where:

* C = degrees Celsius

* F = degrees Fahrenheit

Calculation:

1. Subtract 32 from 140: 140 - 32 = 108

2. Multiply the result by 5/9: 108 * (5/9) = 60

Answer: 140 degrees Fahrenheit is equal to 60 degrees Celsius.