40°F (degree Fahrenheit) is 4.444°C (degree Celsius). The Fahrenheit scale is a temperature scale used in the customary system, which sets the freezing point of water at 32°F and the boiling point at 212°F. On the other hand, the Celsius scale, which is part of the SI system, sets the freezing point of water at 0°C and the boiling point at 100°C. Convert Fahrenheit (°F) to Celsius (°C) and vice versa! Click here to Explore an Easy-To-Use Interactive Tool. To explore more, click here!
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