The formula to convert Fahrenheit to Celsius is:

```

°C = (°F - 32) × 5/9

```

So, to convert 212 degrees Fahrenheit to Celsius, we have:

```

°C = (212 - 32) × 5/9

```

```

°C = (180) × 5/9

```

```

°C = 100

```

Therefore, 212 degrees Fahrenheit is equal to 100 degrees Celsius.