Altitude Pressure Calculator: What Is Air Pressure Up There?
Pressure drops with height in a predictable curve. This calculator applies the standard atmosphere formula to your altitude.
What is the Altitude Pressure Calculator?
Air pressure falls as you climb, roughly following the standard atmosphere curve. Enter an altitude in metres and this tool calculates the pressure in hectopascals from the barometric formula.
How to use it
- Enter your values in the fields provided.
- Click Calculate Pressure.
- Read the result and adjust an input if you want a different outcome.
Worked example
At 1500 metres, air pressure is about 845.56 hPa, down from 1013.25 hPa at sea level.
What is air pressure at 1500 metres?
The barometric formula gives about 845.56 hPa at 1500 metres, compared with 1013.25 hPa at sea level.
Frequently asked questions
What do I enter to get a result?
Fill in every field with your own numbers or choices, then run the tool. Empty number fields count as zero, so check them before you trust the output.
Can I reuse this result elsewhere?
Yes. The result is calculated in your browser from the values you entered, so you can copy the numbers into your own notes or plan.