The formula to convert temperature from Celsius to Fahrenheit is as follows:

°F = (°C × 9/5) + 32

Here, we need to convert 215°C to Fahrenheit:

°F = (215°C × 9/5) + 32

°F = (419°C) + 32

°F = 451°F

So, 215 degrees Celsius is equal to 451 degrees Fahrenheit.