Here's how to convert 120 degrees Fahrenheit (°F) to Celsius (°C):

Formula:

°C = (°F - 32) × 5/9

Calculation:

1. Subtract 32 from the Fahrenheit temperature: 120 °F - 32 = 88

2. Multiply the result by 5/9: 88 × 5/9 = 48.89

Therefore, 120 degrees Fahrenheit is approximately 48.89 degrees Celsius.