How do I calculate Atmospheric Pressure & Compressor Capacity at Altitude?

To calculate Atmospheric Pressure & Compressor Capacity at Altitude: Enter Altitude above sea level, Compressor rated pressure (sea level), Compressor rated capacity (sea level). Click Calculate. INDUGRID computes the result instantly using the formula: P(h) = P₀ × (1 − L×h/T₀)^(g×M/(R×L)) [Barometric formula — valid 0–11,000m]. No registration required.

Pneumatics

Atmospheric Pressure & Compressor Capacity at Altitude

Calculate atmospheric pressure, air density and achievable compressor pressure at different altitudes above sea level.

Units:

in LinkedIn

💡At 2000m altitude, atmospheric pressure is ~20% lower. A compressor rated for 10 bar at sea level achieves only ~9.7 bar at that altitude, and also delivers less flow because the air is less dense. Always check compressor datasheets for altitude de-rating.

P(h) = P₀ × (1 − L×h/T₀)^(g×M/(R×L)) [Barometric formula — valid 0–11,000m]

Input

Altitude above sea level iInstallation altitude in metres above sea level. Valid range: 0–11,000 m (troposphere). The barometric formula becomes inaccurate above this altitude.

Compressor rated pressure (sea level) iMaximum pressure the compressor achieves at sea level (from datasheet).

bar

Compressor rated capacity (sea level) iFree air delivery of the compressor at sea level in nl/min.

nl/min

Result

Atmospheric pressure at altitude [mbar] —

ISA temperature at altitude [°C] —

Air density factor vs sea level [%] —

Achievable pressure at altitude [bar] —

Effective capacity at altitude [nl/min] —