Question 1

How is Attack Rating (AR) calculated in Elden Ring?

Accepted Answer

A weapon's Attack Rating is its base damage plus a scaling bonus for each attribute. The scaling bonus equals the base damage multiplied by the weapon's scaling grade (S–E, expressed as a coefficient) and a saturation curve that models the game's soft caps. Contributions from Strength, Dexterity, Intelligence, Faith and Arcane are summed per damage type, and only the final total is rounded down. tarnished.tools reproduces this from Elden Ring's actual parameter files.

Question 2

How accurate is the tarnished.tools calculator?

Accepted Answer

Every result is validated against more than 2,600 real in-game test cases generated from Elden Ring's parameter files, so the displayed values match what you see in-game.

Question 3

Does the calculator support the Shadow of the Erdtree DLC?

Accepted Answer

Yes. Weapons, Ashes of War and balance changes from the Shadow of the Erdtree DLC are included, and you can switch between game and patch versions.

Question 4

Can I calculate Ash of War (weapon skill) damage?

Accepted Answer

Yes. The calculator shows per-hit, per-element weapon skill damage including motion values, poise and stamina damage, status effect buildup, and scaling curves across stat ranges.

Question 5

What are the Build Fit, Wasted and Cosine metrics?

Accepted Answer

They score how well a weapon matches your build. Fit is how much of the weapon's scaling potential your stat spread captures, Wasted is invested points that add no damage, and Cosine measures how closely the weapon's scaling direction matches where you invested.