Atmospheric Pressure Calculator
To find atmospheric pressure, divide the force applied by the air by the surface area.
This calculator helps you find the pressure exerted by air at different altitudes. Atmospheric pressure is the force of air pressing down on us. The higher you go, the less air above you, and the lower the pressure.
This tool is useful for pilots, scientists, and engineers studying altitude effects, weather, and physics. Instead of solving equations manually, just enter the values, and the calculator will give the answer instantly.
Formula:
The formula for atmospheric pressure is:
| Symbol | Meaning |
|---|---|
| P | Atmospheric Pressure (Pascals, atm, mmHg) |
| F | Force of Air (Newtons) |
| A | Surface Area (m²) |
| m | Mass of Air (kg) |
| g | Gravity (9.81 m/s²) |
What is Atmospheric Pressure?
Atmospheric pressure is the force exerted by air on Earth’s surface. As altitude increases, pressure decreases because there is less air pushing down.
For example, at sea level, the pressure is about 101.3 kPa (1 atm). At 10,000 feet, the pressure drops to around 69 kPa, affecting breathing, weather, and aviation.
Understanding air pressure is essential in weather forecasting, altitude sickness, and aviation, where changing pressure affects oxygen levels and aircraft performance.
Final Words:
Simply, atmospheric pressure decreases with altitude. This calculator makes it quick and easy to find air pressure for science, engineering, and real-world applications.
FAQs:
1. How do you calculate atmospheric pressure?
Use the formula: P = (m × g) ÷ A, where m is air mass, g is gravity, and A is surface area.
2. What is the atmospheric pressure at 30 km?
At 30 km altitude, pressure is much lower, around 1 kPa (0.01 atm).
3. Is 1 psi atmospheric pressure?
No, 1 atm = 14.7 psi, so 1 psi is much lower than atmospheric pressure.