Here's how to convert 12 degrees Fahrenheit to Celsius:

Formula:

Celsius = (Fahrenheit - 32) × 5/9

Calculation:

1. Subtract 32 from the Fahrenheit temperature: 12 - 32 = -20

2. Multiply the result by 5/9: -20 × 5/9 = -11.11 (approximately)

Therefore, 12 degrees Fahrenheit is approximately -11.11 degrees Celsius.