was just asking because prot 5 isn't a vanilla enchant and im pretty sure it acted like prot 1 a couple maps ago.

Protection reduces damage by 4% per level, Full prot 4 = 64% damage reduction (As opposed to unenchanted) and full prot 5 = 80% damage reduction. It's well worth using prot 5 cosmonaut pieces for meta. (Also dragon and koth come with prot 5 already added so that's pretty cool.)

I'm pretty sure it's correct, all information is from here: https://minecraft.gamepedia.com/Protection

This is the correct equation: EPF = floor ( [ 6 + level ^ 2 ] * .75 / 3 ) I cba to do all the math rn, but @lapisplaysmc studied this equation like the bible, and protection 5 comes out to be 40% stronger than protection 4.

I doubt that's the equation, it would just be floor ( [ 6 + level ^ 2 ] * 0.25) and the devs probably aren't stupid enough to use an unsimplified equation for a regularly run calculation.

I found the original post that @lapisplaysmc presumably grabbed this equation from: EPF = floor ( [ 6 + level ^ 2 ] * .75 / 3 ) In words, the floor function means to take whatever is inside the parentheses and bring it down to the lowest integer. So, floor ( 1.9 ) = 1, and floor ( 15.1 ) = 15. Level is the value specified by the list above. So Protection IV would have the level be 5. Let's calculate for the armor piece enchanted with Protection I. EPF (for the Protection I armor piece) = floor ( [ 6 + 1 ^ 2] * .75 / 3 ) = floor ( 7 * .75 / 3) = floor ( 1.75 ) = 1. How about the one with Protection II? EPF (for the armor piece with Prot II) = floor( [ 6 + 2 ^ 2 ] * .75 / 3 ) = floor ( 10 * .75 / 3 ) = floor ( 2.5 ) = 2. You get the pattern for the rest of the armor pieces. To get the TOTAL EPF for all the armor pieces, you simply add these values together. So: 1 + 2 + (whatever values you get for doing the calculations for the other armor pieces) = total EPF. Do note, however, that the total EPF is capped by 25. So if the EPF exceeds 25, it will be reset back to 25. So therefore, even if you do this fancy equation, the NET gain over prot 5 is 0 unless cosmic has some plugin to make it otherwise. Furthermore, this limit rings a bell from some technical Minecraft yt videos. Furthermore there is a limit to the amount of protection on a piece, e.g. if you have projectile protection, blast protection, feather falling and normal protection (all 4) on every piece of armour, their effect will be limited.

II remember talking to lapis and triplechecking the math for like 2 hours, it ended up being 40% better than prot 4. Glancing at your math, either you, or lapis and I, went wrong somewhere.