The formula to convert Fahrenheit to Celsius is:

```

°C = (°F - 32) × 5/9

```

where:

* °C is the temperature in Celsius

* °F is the temperature in Fahrenheit

So, to convert 50 Fahrenheit to Celsius, we plug the value into the formula:

```

°C = (50 - 32) × 5/9 = 10 °C

```

Therefore, 50 Fahrenheit is equal to 10 degrees Celsius.