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Natural gas pipe diameter, flow rate and pressure drop calculator

Related calculators: LPG flow; Thermal energy

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
  • Always use the latest version with automatic update
  • Stay connected with developer and community through social channels



Java Runtime Environment – JRE version 1.8+
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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 can be used for calculation of flow rate and pressure drop calculation in natural gas pipe with constant diameter.

In natural gas pipe diameter, flow rate and pressure drop calculator natural gas is considered as compressible, so you can use calculator for medium and high pressure gas lines. Pressure must be higher than 1 barg and lower than 100 barg.

Natural gas pipe diameter, flow rate and pressure drop calculator can be used if the gas pipe line is longer than 1m (L > 1m). Local pressure losses due to resistance in valves and pipe fittings and pressure changes due to height change are not included in calculator. Temperature of natural gas in underground gas lines can be considered as constant as the drop of temperature due to friction pressure drop is compensated with the heat that natural gas is getting from the soil.

Natural gas pipe diameter, flow rate and pressure drop calculator can be used for pressure drop (p1-p2), or eihter volume flow rate (q) or weight flow rate (w) calculation. Volume flow rate q is calculated at standard conditions which are represented by pressure of p = 101325 Pa and natural gas temperature of T=288.15 K. Flow mean velocity of natural gas in pipe is also calculated for specific pipe diameter.

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