My friend and I are arguing about how many blocks a diamond pickaxe will be able to break without it breaking itself. Do you know how much?
25 Answers
Unenchanted Diamond Pickaxe has durability of 1562.
Here's the durability of various pickaxes visualized: 
1562 for diamond,for the new netherite pickaxe, 2031
1Diamond Pickaxe has a durability of 1561. You can click F3+H to see the durability of all tools.

You can check the durability of a tool by simply pressing Fn-F3-H and hovering your cursor over the item in your inventory. THe number represented there will tell you how many blocks you can break with that tool.
Specifically, a diamond pickaxe can break one-thousand five-hundred sixty-two (1562) blocks.
Depends on the material. If it is used for wood, that is a different story.
But, it is 1562 on stone.