# Calculate the Boiling Point of Water at Altitude

Apr 26, 2023

The boiling point is the temperature at which a liquid boils. It is also known as saturation temperature. This is because when a liquid has reached this temperature it is saturated with thermal energy, or it has as much thermal energy as it can have without changing to vapor.

The boiling point of a liquid depends on the temperature, atmospheric pressure and vapor pressure. At standard atmospheric pressure (at 1 atmosphere), water boils at 100 degrees Celsius.

At high altitudes, the vapor pressure of water is lower, so water boils at a higher temperature.

There are many other factors that affect the boiling point of a liquid, including its impurities. For example, salt increases the boiling point of water by 0.5 degrees Celsius.

This is because saltwater dissolves quickly in water, and it has a lower melting point than non-salt water.

#### How can I calculate the boiling point of water at altitude?

Answer: The boiling point of water at altitude is a combination of air temperature, barometric pressure and elevation. For example, if you are traveling to Machu Picchu in Peru, the highest city on the planet at 2430 meters above sea level, you will need to bring your water up to 212 degrees for it to boil.

You can find out the boiling point of water at altitude using this calculator. It is very accurate because it assumes that the pressure at sea level is constant and equal to 1013 hPa (1.013 bar). You can use this calculator to determine the boiling point of water at different altitudes.