ISA Atmosphere
Enter one property to calculate the others based on the International Standard Atmosphere model. Note: Calculating from temperature is only valid in the Troposphere.
Altitude
1000.0 m
3281 ft
Temperature
281.65 K
8.50 °C / 47.30 °F
Pressure
898.74 hPa
89874 Pa / 0.8870 atm / 0.8987 bar
Density
1.1117 kg/m³
air density
Atmospheric layer
Troposphere
ISA segment
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.