Calculating Barometric Pressure Using Temperature And Elevation

This calculator determines barometric pressure based on temperature and elevation. It's useful for meteorology, aviation, and outdoor activities where accurate pressure readings are important.

Input Parameters

Calculation Results

Calculation Formula

P₂ = P₁ × (T₁/T₂)^(L/g₀)

Where:
P₁ = Sea level standard pressure (1013.25 hPa)
T₁ = Sea level standard temperature (288.15 K)
T₂ = Actual temperature (K) = (°C + 273.15)
L = Environmental lapse rate (0.0065 K/m)
g₀ = Standard gravity (9.80665 m/s²)
P₂ = Barometric pressure at given elevation (hPa)

Calculating Barometric Pressure Using Temperature And Elevation Calculator Usage Guide

Learn how to use the calculator and understand the principles behind barometric pressure calculations

How to Use This Calculator

  1. Enter the current temperature in degrees Celsius (°C)
  2. Enter the elevation in meters (m) above sea level
  3. Click the "Calculate" button to compute the barometric pressure
  4. The result will be displayed in hectopascals (hPa)

Understanding Barometric Pressure

Barometric pressure is the pressure exerted by the Earth's atmosphere at a specific point. It decreases with increasing altitude because the amount of air above decreases. Temperature affects how quickly pressure drops with elevation - warmer air is less dense and decreases pressure more rapidly with height.

Practical Applications

  • Weather Forecasting: Barometric pressure changes often indicate weather changes (rising pressure suggests fair weather, falling pressure suggests approaching storms)
  • Aviation: Pilots use barometric pressure to determine altitude, especially in non-pressurized aircraft
  • Outdoor Activities: Hikers and climbers use barometric pressure to predict weather changes in mountainous areas
  • Home Weather Stations: Many home weather stations measure and display barometric pressure

Important Notes

This calculator uses the standard atmosphere model, which provides a good approximation for many conditions. However, actual atmospheric conditions may vary, especially in areas with unusual temperature inversions or other weather phenomena.