Hello kerbonauts,
As a 'purist', I have never used any mods or cheatsheets and so I used to do all calculations by hand. The only way for me to use a CalculationsSheet, is to make one myself, so that's what I did. Using it for all sorts of hohmann-transfers, commsat-deployments and delta-v calculations. I know there have been other mods and sheets around for years, which can do exactly the same thing.
I made my own CalculationSheets to maintain the 'purist' way of playing, but without having to do manual calculations. I have no problems at all with non-purists, it's a singleplayer game, we all can play how we want.
The green fields are for input, all other cells are blocked. I hope someone else will find the sheet useful. Feel free to comment also.
Free to use with this link: https://docs.google.com/spreadsheets/d/10jiVQF0OBHQrgSCXz-bWVS0uYm7T0TlwV50zeXrdr4Y/edit?usp=sharing