# Altitude from atmospheric pressure Calculator

## Calculates the altitude at the present location from the atmospheric pressure and temperature, and sea-level pressure. | ||

The atmospheric pressure observed is adjusted to the equivalent sea level pressure in order to construct the isobaric weather map. If the altitude is more than 11km high above sea level, the hypsometric formula cannot be applied because the temperature lapse rate varies considerably with altitude. |

- Purpose of use
- Building an electronic altimeter

[1] 2022/07/05 03:15 60 years old level or over / A retired person / Very /

- Purpose of use
- comparison of readings from various sensors

[2] 2022/01/17 23:33 60 years old level or over / A retired person / Very /

- Purpose of use
- Needed the calculation formula for implementation in sensor readings processor

[3] 2021/06/15 18:57 20 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- Data analysis
- Comment/Request
- Is there a reference where this formula comes from? Any text book/ paper?
- from Keisan
- Please refer to

Atmospheric pressure from altitude

-> Related links -> Derivation of an equation

The pressure formula can be rearranged to make "h" the subject

and the altitude formula is obtained.

[4] 2021/06/03 04:06 20 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- converting pressure readings to altitude
- Comment/Request
- allow other units of entry (mmHg, bar, etc

[5] 2021/01/29 18:25 60 years old level or over / An engineer / Very /

- Purpose of use
- helped with a UAV controller

[6] 2021/01/29 15:50 30 years old level / Self-employed people / Very /

- Purpose of use
- Used as a check for my projectile calculation programming.
- Comment/Request
- very useful

[7] 2020/06/08 17:41 60 years old level or over / An engineer / Very /

- Purpose of use
- To calculate the altitude of a high performance rocket using pressure and temperature sensors

[8] 2020/02/18 20:28 Under 20 years old / High-school/ University/ Grad student / Very /

- Purpose of use
- Calculate height in fitness app

[9] 2019/08/24 17:18 Under 20 years old / High-school/ University/ Grad student / Useful /

- Purpose of use
- good calculator
- Comment/Request
- The altimeter of my aircraft does not take into account the temperature.

Why do you need temperature to compute elevation data ?

Thanks

[10] 2018/08/30 13:49 60 years old level or over / An engineer / Useful /

**To improve this 'Altitude from atmospheric pressure Calculator', please fill in questionnaire.**

**The hyperlink to [Altitude from atmospheric pressure]**