How does durability work in Breath of the Wild?

Solution 1:

No, there's no way to know exactly how many hits you have left in a weapon through a percentage, durability bar, or other exact indicator.

The game gives you 3 signals for durability before a weapon breaks:

Completely unused, which is denoted by a yellow flashing star in the upper right corner of the weapon slot in your inventory:

Used, but not close to breaking, which is denoted by the yellow flashing star disappearing from the corner of the weapon slot in your inventory.

Damaged and close to breaking, which is denoted by a red flashing background in the weapon slot in your inventory.