Here's how to convert 30 degrees Fahrenheit to Celsius:

Formula:

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

Where:

* C = Temperature in Celsius

* F = Temperature in Fahrenheit

Calculation:

1. Subtract 32 from the Fahrenheit temperature: 30 - 32 = -2

2. Multiply the result by 5/9: -2 * 5/9 = -1.11 (approximately)

Therefore, 30 degrees Fahrenheit is approximately equal to -1.11 degrees Celsius.