A me is counted only when one completely breaks apart one block or hits a mob. If your block is partially broken this is not counted as a full use. If one transpires with use a tool that isn’t ideal for the job available (e.g. Using an axe to dig through stone instead of a pickaxe, or fighting a mob with a shovel rather than a sword), it’ll count as two uses rather than one, seeing this isn’t the particular task of the item in hand.
Proper utilization of tools will maximise their durabilities while Minecraft Crafting. Assuming a person correctly uses tools, here is a listing of maximum durabilities for each material type.
Regarding protective equipment such as armor, the quantity of damage a bit of armor can protect is dependent about the percentage of remaining uses it has and its number of base armor points. A mathematical equation for said percentage are available about the item durability page. As expected, the reliability of armor decreases as the number of times you’re being hit increases.