The Celsius scale sets the freezing and boiling points of water at 0 and 100 degrees, respectively. On the Fahrenheit scale, water freezes at 32 and boils at 212 degrees.

Kelvin is an absolute temperature scale used primarily in scientific calculations. 0 Kelvin (absolute zero) is the lowest possible temperature, where theoretical thermal energy is zero.

A normal healthy human body temperature is approximately 37°C. This corresponds to about 98.6°F in Fahrenheit.