Boiling Point at Altitude Calculator

Water boils at a lower temperature the higher you go, because air pressure falls. Enter your altitude to find the exact boiling point.

How to use the Boiling Point at Altitude Calculator

Enter your altitude.
Choose feet or meters.
Read the boiling point and air pressure.

How it works

The calculator estimates air pressure with the standard atmosphere model and then finds the temperature at which water’s vapour pressure equals that air pressure using the Antoine equation. Roughly, the boiling point drops by about 1 °F for every 500 ft (1 °C per 300 m).

Because water boils cooler, foods take longer to cook by boiling at altitude, and baking recipes often need adjustments.

Boiling point of water by altitude

Altitude	°F	°C
0 ft (0 m)	212	100
1,000 ft (305 m)	210.2	99
2,000 ft (610 m)	208.4	98
3,000 ft (914 m)	206.5	97
4,000 ft (1,219 m)	204.7	96
5,000 ft (1,524 m)	202.9	94.9
6,000 ft (1,829 m)	201.1	93.9
7,000 ft (2,134 m)	199.3	92.9
8,000 ft (2,438 m)	197.4	91.9
10,000 ft (3,048 m)	193.8	89.9
14,000 ft (4,267 m)	186.4	85.8

Frequently asked questions

What is the boiling point of water in Denver?

At about 5,280 ft, water boils at roughly 202 °F (95 °C).

Why does water boil at a lower temperature at altitude?

Lower air pressure means water molecules need less energy to escape as vapour, so boiling starts at a lower temperature.

Does food cook faster at altitude?

No — slower. Boiling water is cooler, so pasta, eggs and beans take longer to cook.