Do you often find yourself using your operating system's calculator app or a spreadsheet to assist you in calculating production ratios? I know I am...

But one day, I saw the irony of doing these (semi) manual calculations for a game that's all about automation. So... Why not automate these calculations too?

This is pretty much what this mod does. Input your desired production rates for one ore more "final product" items (such as science packs, modules, turret ammo, etc.) and the Recursive Resource Calculator will decompose the items all the way down to raw resources, while building a detailed report of the required production rates and machine numbers for each item/fluid along the way. You can choose module configurations for each recipe (even supporting fractional module counts to properly take beacons into account) and see an estimate of the pollution and energy consumption of your assembly line. The mod also supports "complex" recipe systems (such as the oil processing stack in vanilla), with some limitations.

The GUI is quite minimalistic and should be quite intuitive to use. The only custom key bind this mod adds is the opening/closing of the calculator (ALT + C by default). The calculator can also be closed by pressing the usual "Close GUI" key (E by default).