To convert -12 degrees Celsius to Fahrenheit, you can use the following formula:

°F = (°C × 9/5) + 32

Substituting -12 for °C, we get:

°F = (-12 × 9/5) + 32

°F = (-108/5) + 32

°F = -21.6 + 32

°F = 10.4

Therefore, -12 degrees Celsius is equal to 10.4 degrees Fahrenheit.