Hearts of Iron 4 Aircraft Calculator

a tool for planning you air force buildup

How to use this Calculator:

To use this calculator, simply select a plane type and enter how many of those plans you want to build. If you want to build multiple plane types, just click on "add plane type". Afterwards, enter some data about your production efficiency, factory efficiency and the time span of this calculation. Now hit the "Calculate!" Button and enjoy your result.

Now let's enter your data:

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Result: