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Isothermal gas flow rate and pressure drop calculator

Related calculators: Air flow; Gas leak

Pipe flow calculator features

  • Pack of sixteen pipe flow calculators in one application
  • Productive tool for every day flow calculations
  • Used by thousands of engineers, students, professors and other professionals every day
  • Multiple calculation scenarios for each calculator
  • Easy switch between metric and imperial units
  • Copy and save calculation results
  • Every calculator is backed with used theory and equations
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Java Runtime Environment – JRE version 1.8+
(install latest JRE now)

OR without Java
Download and run calculators pack - for Windows64bit users only.

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Calculators for download in one pack, Java required.
For desktop/laptop users (Windows, MacOS, Linux)

download and start
*no administrator's roles required

No Java? It's a shame…
BUT it's not the end of the word!

If you are having Windows 64bit on your computer you can download and run calculators even without administrator role on your computer. This kind of calculator deployment is great if you are on the corporate network and if you don't have authority to install anything on your computer.

If you are not Windows 64bit user you can still use some calculators on my other web site at pipeflowcalculations.net .
There you can try server side, mobile friendly, pipe flow calculators that require nothing more than a web browser and Internet connection

Calculator is for flow rate or pressure drop calculation of gas that flows through round closed pipe. Isothermal gas flow rate and pressure drop calculator is for any gas including air, natural gas, carbon dioxide, oxigen, nitrogen, or any other gas. Temperature of the gas is considered to be constant.

Isothermal gas flow rate and pressure drop calculator can be used for laminar and turbulent flow regime as Reynolds number is calculated also. You can calculate pressure drop or flow rate through a pipe including friction losses and minor pressure losses calculation.

Isothermal gas flow rate and pressure drop calculation is based on the pressure drop equation for isothermal flow. For pressure loses friction factor f and resistance coefficient K is used. Flow mean velocity for known flow rate and pipe diameter is calculated on the pipe start and on the pipe end. Values of Reynolds number and flow regime - laminar or turbulent are also presented. Pressure difference due to change of height is not included in this version of calculator.

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