BetterToolTips

Tooltips in vanilla Minecraft show enchantment levels but leave the numbers behind them to the player. BetterToolTips adds calculated data to item tooltips: a tool shows its current durability against its maximum with a color-coded percentage, and an estimate of how many uses remain given its Unbreaking level. Sharpness adds a flat attack bonus per level, Protection shows a percentage of damage blocked, and Power is turned into a percentage boost, so each enchantment's effect is shown directly.

Other entries cover fishing rods, where the bite wait and the chance of catching fish, treasure or junk are calculated from the Lure and Luck of the Sea levels. Efficiency levels are converted into readable mining speeds. Food items list their hunger and saturation values along with any status effects eaten. Items also get a subtle spacer between vanilla lines and the added stats, and the mod can show NBT tags for players who need them.

The mod is client-side only, so a server running vanilla or other mods needs nothing installed, and players install it alone. It is published for Fabric only, for Minecraft 1.21.1, and it uses a single Mixin on ItemStack, which the author describes as having no measurable frame rate cost. The mod is not open source; All rights reserved applies to it.