Compressor Pressure Ratio Calculator
Divide outlet absolute pressure by inlet absolute pressure in one shared unit.
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Sources and rights
Independent implementation and original wording; linked material is referenced only, with no source code, text or tables copied. No third-party license is claimed for this tool.
A QUICK WALKTHROUGH
How to use this tool
- Pressure ratio = Pout / Pin. Both pressures must be positive and absolute, in the same unit. For gauge readings, first add the local ambient pressure in that unit. This ratio does not determine power, temperature or actual flow.
- Calculate
Formula and limits
Pressure ratio = Pout / Pin. Both pressures must be positive and absolute, in the same unit. For gauge readings, first add the local ambient pressure in that unit. This ratio does not determine power, temperature or actual flow.
Inputs stay in this browser.
Inputs stay in this browser.
Sources and rights
Independent implementation and original wording; linked material is referenced only, with no source code, text or tables copied. No third-party license is claimed for this tool. https://www.energy.gov/sites/default/files/2016/03/f30/Improving%20Compressed%20Air%20Sourcebook%20version%203.pdf
GOOD TO KNOW
Common questions
How should I interpret this result?
Pressure ratio = Pout / Pin. Both pressures must be positive and absolute, in the same unit. For gauge readings, first add the local ambient pressure in that unit. This ratio does not determine power, temperature or actual flow.