Frequently Asked Questions

Why does water freeze at 0°C and 32°F?

Celsius scale is based on water's freezing (0°C) and boiling (100°C) points. Fahrenheit scale was created earlier with different reference points, where water freezes at 32°F.

How to convert Celsius to Fahrenheit manually?

Multiply the Celsius temperature by 9/5 (or 1.8), then add 32. For example: 25°C × 9/5 + 32 = 77°F.

Why does Fahrenheit start at 32 for freezing?

Daniel Fahrenheit based his scale on different reference points. He set 0°F as the freezing point of a salt and water mixture, which made pure water's freezing point 32°F.

At what temperature are Celsius and Fahrenheit equal?

At -40 degrees. Both -40°C and -40°F represent the same temperature.