1. What is Barometric Pressure from Elevation Calculator?

Definition: This calculator estimates the barometric pressure at a given elevation using the international barometric formula.

Purpose: It helps meteorologists, pilots, engineers, and outdoor enthusiasts determine atmospheric pressure at different altitudes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Barometric pressure (Pascals)
• \( h \) — Elevation above sea level (meters)
• 101325 — Standard atmospheric pressure at sea level (Pa)
• 0.0065 — Temperature lapse rate (K/m)
• 288.15 — Standard temperature at sea level (K)
• 5.2561 — Exponent constant

Explanation: The formula models how atmospheric pressure decreases with altitude under standard atmospheric conditions.

3. Importance of Barometric Pressure Calculation

Details: Accurate pressure estimation is crucial for weather forecasting, aircraft performance calculations, and scientific research.

4. Using the Calculator

Tips: Simply enter the elevation in meters above sea level. The calculator will output the estimated barometric pressure in Pascals.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: This provides a standard atmosphere estimate. Actual pressure varies with weather conditions.

Q2: Can I use this for very high altitudes?
A: The formula is valid up to about 11,000 meters (36,000 ft).

Q3: What's the pressure at sea level?
A: Standard sea level pressure is 101325 Pa (1013.25 hPa).

Q4: How does temperature affect the result?
A: Warmer temperatures decrease pressure gradient; colder increases it. This uses standard lapse rate.

Q5: How to convert Pascals to other units?
A: 1 hPa = 100 Pa, 1 atm = 101325 Pa, 1 mmHg ≈ 133.322 Pa.