What is a good crit value for an artifact?

Artifact-only CV of 160 or more is generally considered good, 190 or more excellent. Since a full set is five pieces, a 200 CV total works out to roughly 40 CV per piece.

Why is crit rate multiplied by two?

Because a crit rate roll is worth about half a crit damage roll on the same tier. Doubling rate puts both stats on a comparable scale so they can be added.

Should I subtract base stats before calculating?

Yes, if you want to compare artifacts. The character's innate 5% crit rate and 50% crit damage are always present, so including them inflates every build by 60 CV.

Does high CV always mean more damage?

No. CV ignores attack, energy recharge, elemental mastery, set bonuses and main stats. A high-CV piece with the wrong main stat can be worse than a lower-CV piece that fits the build.

Crit Value (CV) Calculator — Rate Any Artifact Roll

What crit value is

Crit value (CV) compresses two stats into one number so you can rank artifacts quickly:

CV = 2 × Crit Rate + Crit Damage

The 2× weight is not arbitrary. A crit rate roll and a crit damage roll on the same artifact tier give 3.9% and 7.8% respectively, so one point of rate is worth almost exactly two points of damage. Multiplying rate by two puts them on the same scale.

Reading the number

CV is normally quoted for the artifact-only portion, with the character's innate 5% rate and 50% damage removed. A full five-piece set at 200 CV works out to about 40 CV per piece, which is a realistic endgame target rather than a lucky outlier.

Artifact-only CV	Rough band	What it means
Under 130	Low	Placeholder pieces, replace when possible
130–160	Average	Serviceable, but leaves damage on the table
160–190	Good	Solid endgame set for most characters
190–220	Excellent	Strong set, hard to improve without farming forever
220+	Exceptional	Top-tier rolls, usually a long-term project

These bands are community conventions, not official thresholds. They shift with the character's own crit ascension and with the weapon's crit substat.

What CV ignores — and why that matters

CV is a filter, not a verdict. It says nothing about:

Attack, HP or EM scaling. A 45 CV piece with a dead main stat can lose to a 30 CV piece with the right one.
Energy recharge. Many teams break without an ER threshold, and CV cannot see it.
Set bonuses. Losing a four-piece bonus for higher CV is usually a downgrade.
Diminishing returns. Pushing crit rate past 100% is wasted, and stacking crit damage without enough rate is a trap.

Practical rule: use CV to decide which pieces are worth levelling, then check the main stat, the set and the ER requirement before you equip. CV answers "is this roll good?", not "is this build good?".

How to compare two artifacts fairly

Convert both to artifact-only CV.
Check that the main stat matches the slot's role.
Confirm the set bonus is not broken.
Only then prefer the higher CV.

Most "which piece is better" arguments come from skipping step two or three, not from bad math.

Crit Value Calculator

What crit value is

Reading the number

What CV ignores — and why that matters

How to compare two artifacts fairly