The formula to convert Fahrenheit to Celsius is:

°C = (°F - 32) / 1.8.

So, to convert 475 degrees Fahrenheit to Celsius, we use the formula as follows:

°C = (475 - 32) / 1.8 = 246.11 °C.

Therefore, 475 degrees Fahrenheit is approximately 246.11 degrees Celsius.