How do you convert temp. From F to C?

The Weather app will do it for you.

Switch between Celsius and Fahrenheit

1. Open Weather, then tap .
2. Tap , then tap Celsius or Fahrenheit.

Or manually

Use this formula to convert a temperature in Fahrenheit (°F) to Celsius (°c)

Celsius (°C) = (Fahrenheit - 32) / 1.8

In weather:

Tap on the bullet list icon (lower right)

Tap More on the resultant screen (The three dots, upper right)

Choose celsius