What this tool does
Provides fast unit conversions between hydrogen flow, mass, and energy bases so teams can reconcile assumptions across technical and commercial workstreams.
Make quick, defensible conversions
Use the calculators below to translate between normal volumetric flow, mass flow, gravimetric energy content and dew point equivalents for hydrogen streams. Results assume normal conditions (0 °C, 1.013 bar) unless noted.
Flow and energy conversions
Switch between Nm³/h, kg/h and energy intensities using an industry standard density of 0.08988 kg per Nm³.
When to use it
Use it for screening calculations, spreadsheet checks, and quick communications clean-up. Do not use it as a substitute for a full thermodynamic property package when pressure, temperature, or purity effects matter.
Key assumptions
- Conversions rely on a standard normal-density basis suitable for high-level engineering and commercial screening.
- Actual density and energy content will shift with pressure, temperature, and composition.
- Results are intended to keep teams on a consistent basis, not to replace detailed process simulation.
- Default conversion factors should be checked against the project basis before external issue.
Hydrogen flow converter
Enter either normal volumetric flow or mass flow. The counterpart is calculated automatically.
Gravimetric & volumetric energy
Convert electrolyser or fuel cell figures between kWh per kg and kWh per Nm³.
More engineering tools
Combine these conversions with purity and storage sizing for a complete engineering view.