Home
Back
Air Weight Formula:
| From: | To: |
The air weight calculation determines the mass of air in a given volume using the fundamental physical relationship between mass, volume, and density. At standard temperature and pressure (STP), air has a density of approximately 1.225 kg/m³.
The calculator uses the basic physics formula:
Where:
Explanation: The calculation multiplies the volume of space by the density of air to determine the total mass of air contained within that volume.
Details: Calculating air weight is essential in various fields including HVAC design, aerodynamics, engineering calculations, environmental studies, and physics applications where the mass of air affects system performance and design parameters.
Tips: Enter volume in cubic meters (m³). The density defaults to 1.225 kg/m³ (standard air density at sea level, 15°C), but you can adjust it for different altitudes or conditions. All values must be positive numbers.
Q1: What is the standard density of air?
A: At standard temperature and pressure (15°C, 101.325 kPa), dry air has a density of approximately 1.225 kg/m³.
Q2: How does altitude affect air density?
A: Air density decreases with increasing altitude due to lower atmospheric pressure. At 1500m elevation, density is about 1.056 kg/m³.
Q3: How does temperature affect air density?
A: Warmer air is less dense than cooler air. For every 1°C increase in temperature, density decreases by approximately 0.004 kg/m³.
Q4: What is the weight of air in a typical room?
A: A 4m × 5m × 3m room (60m³) contains about 73.5 kg of air at standard conditions.
Q5: Why is air weight important in engineering?
A: Air weight affects structural loads, HVAC system design, aircraft performance, ventilation requirements, and pressure vessel calculations.