Fuel Cell Online Calculator

Please note that the calculator may not work properly with some browsers due to insufficient math package

This fuel cell online calculator performs approximate calculations of PEM fuel cell stacks and comparative calculations for stacks based on stamped and joined metal bipolar plates (Metal-BIP) and on carbon-based bipolar plates (C-BIP), considering internal coolant flow fields for each BIP type.


Please note, that the input volume flows are calculated as non-humidified dry gas volume flows and in norm-litres per minute, at standard conditions. Stack operating conditions deriving from standard conditions in terms of pressure, temperature, humidity etc. have to be recalculated according to that.

Very important: please use the dot as decimal separator:
Correct: 3.141 wrong: 3,141

Calculation of input volume flows of fuel and oxidant and stack performance calculation

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Active Cell Area [cm²] Stoichometry of Cathode Flow (Air/O2) [-]
Electric Current Density [A/cm²] Stoichometry of Anode Flow (H2) [-]
O2-Concentration within Cathode Flow [%] H2-Concentration within Anode flow [%]
Number of Cells in the Stack [-]
Optional Input:
Single Cell Voltage (under load) [V] Single Cell Voltage (OCV) [V]
Volume flow: Cathode Gas [Nl/min] Volume flow: Anode Gas [Nl/min]
Water Production (under load) [g/min] Production of Excess Heat [W]
Electric Stack Power (under load) [W] Stack Voltage (idle) [V]
Electric Stack Current (under load) [A] Stack Voltage (under load) [V]


Calculation of Stack Volume and Power Density:
Comparation of stamped Metal Bipolar Plates and Carbon-based Bipolar Plates

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Anode Flow Field: Channel Depth [mm]   Cathode Flow Field: Channel Depth [mm]
Coolant Flowfield: Channel Height [mm]   Percentage of the Active Cell Area on the Overall Bipolar Plate Area [%]
Thickness of Sheet Metal (Metal-BIP) [mm]
  Minimum Wall Thickness for being H2-tight (C-BIP) [mm]
Thickness of Additional Layers per Cell (E.g. witin glued / brazed BIP or bipolar plates with more than three flowfields) [mm]   Thickneess of MEA [mm]
Anode Current Collector Plate: Thickness including first Anode Flowfield [mm]   Cathode Current Collector Plate: Thickness including first Cathode Flowfield [mm]
Thickness of Electrical Isolation: Endplate – Anode Current Collector Plate [mm]   Thickness of Electrical Isolation: Endplate – Cathode Current Collector Plate [mm]
Thickness of End Plate (Anode Side) [mm]   Thickness of End Plate (Cathode Side) [mm]
Overall Height of Stack (from metal bipolar plates) [mm]   Overall Height of Stack (from carbon bipolar plates) [mm]
Base Area Stack [cm²]      
Volume of Metal-Stack [litre]   Volume of Carbon-Stack [litre]
Power Density Metal-Stack [kW/liter]   Power Density Carbon-Stack [kW/liter]