This thread's for containing miscellaneous spreadsheet utilities I make for myself and decide to publish that don't relate to ASM hacks or otherwise modifying the ISO.
Right now, the only entry I have here is my Mass Stat Calculator, which does what it says on the tin - it lets you input your Level 1 Raws for Male, Female, Monster, then input your C and M values for each job class, and it will output the stats of that class at Level 10, Level 35, Level 50, and Level 99 so you can see how straight-leveled classes balance against each other at three of the more key points in the game. (Those being AI-battle accepted strength, ~End Chapter 4 strength, and Max Level Strength, assuming an averagely played generic game.) This information is good for a lot of things, especially AI-stat balance and monster balance. It comes with Vanilla Defaults as all my workbooks do, so you can quickly see how well Vanilla (didn't) balance itself out at each point in the game, see growth trends by having every class' information directly adjacent to each other, etc. Now compatible with every Job in the game. Special Jobs now all have Gender toggles. You must enter the final Multipliers for Zodiac HP and MP to get the correct value though - for example, Queklain's HP multiplier in FFTPatcher is 50, but because he comes with ??? and has his multipliers modified by a factor of 10 in-game, you must enter his HPM as 500 in Mass Stat Calculator to get the value he'll actually have in-game.
After making this, I found it invaluable in finding balance issues I would've easily overlooked otherwise, so hopefully you'll all do the same.
NOTE, if for some reason this spreadsheet "breaks" and you get something like "Err:502" on your stat table and you're not doing something dumb like dividing by 0, go to the Big Sheet 'O Guts tab, find the Job/Stat combo that's errored out, then go to Column AJ. Column AK should be the bugged column, and merely dragging the contents of AJ into AK should fix AK and all columns after it. This doesn't happen often but I've had it happen a couple times so if it happens to you, this is how to fix it.