How to Use the Calculator
- Enter the altitude in meters in the "Altitude" field.
- Click the "Calculate" button to compute the atmospheric pressure at the given altitude.
- The result will be displayed in the "Atmospheric Pressure" field in Pascals (Pa).
- Use the "Reset" button to clear all input and result fields.
Working Principle
The calculator uses the barometric formula to calculate the atmospheric pressure at a given altitude. The barometric formula is based on the ideal gas law and assumes that temperature decreases linearly with altitude. The formula is:
P = P₀ * exp(-g * M * h / (R * T))
Where:
- P is the atmospheric pressure at altitude h.
- P₀ is the sea level standard atmospheric pressure (101325 Pa).
- g is the gravitational acceleration (9.80665 m/s²).
- M is the molar mass of Earth's air (0.0289644 kg/mol).
- h is the altitude above sea level in meters.
- R is the universal gas constant (8.31432 J/(mol·K)).
- T is the standard temperature at sea level (288.15 K).