When working on the various forms of caffenol and other DIY developers, I often found it difficult to keep track of all of the different amounts of developer I needed to make. For instance, the recipe for 1 liter of Caffenol C-L is
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But I need to know the values for 290ml (1 roll in a Patterson tank), 580ml (2 rolls of film in a Patterson tank), 200ml (4 sheets of 4x5 in a rotary processing tank) and so on. Calculating it out every time and writing it on sheets of paper and keeping track of which sheets are which made me feel crazy because I was constantly switching formats and films and caffenol formulations and everything, so I am writing this calculator to help me figure this out