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

Formula:

F = (C * 9/5) + 32

Where:

* F = Fahrenheit

* C = Celsius

Calculation:

1. Substitute: F = (-30 * 9/5) + 32

2. Simplify: F = (-54) + 32

3. Calculate: F = -22

Therefore, -30 degrees Celsius is equal to -22 degrees Fahrenheit.