About

Competitive gaming requires precise performance metrics. In World of Tanks, the WN8 rating serves as the primary indicator of player skill, replacing the obsolete Efficiency Rating (ER). Clans and tournament organizers rely on this metric to evaluate player contribution beyond simple win rates. This tool processes battle statistics against a database of specific tank expected values. It determines whether a player contributes damage and frags effectively relative to the specific vehicle played. Accuracy here is critical; a high win rate with low WN8 often indicates a player being carried by a platoon, whereas high WN8 with a low win rate suggests strong individual performance in losing efforts.

Formulas

The WN8 calculation utilizes a multi-step ratio system comparing player stats to expected values. The core formula for the weighted score is:

WN8 = 980⋅rDAM + 210⋅rDAM⋅rFRAG + 155⋅rFRAG⋅rSPOT + 75⋅rDEF⋅rFRAG − 145

Where variables like rDAM represent the ratio of average damage to expected damage:

rDAM = AvgDamageExpDamage

Reference Data

Rating Category	WN8 Range	Win Rate (%)	Color Code
Bad	0 − 300	< 46.0	Red
Below Average	300 − 600	46 − 47	Orange
Average	600 − 900	48 − 50	Yellow
Good	900 − 1250	51 − 52	Green
Very Good	1250 − 1600	53 − 54	Dark Green
Great	1600 − 1900	54 − 56	Blue
Unicum	1900 − 2350	56 − 60	Purple
Super Unicum	> 2350	> 60	Dark Purple

Frequently Asked Questions

The in-game rating (WTR) uses a closed formula developed by Wargaming that factors in assist damage and vehicle survival heavily. WN8 is a community-developed metric that prioritizes damage output and kills (frags) relative to the specific tank played. It is generally considered a better metric for pure combat effectiveness.

Every tank has "Expected Values" set by the XVM team based on the server average. Playing a "weak" tank well yields a higher WN8 than playing a "strong" tank moderately well. If the expected damage for a tank is 1000 and you deal 2000, your rating skyrockets.

No. Original WN8 does not calculate spotting or assisted damage because this data was not available in the API when the formula was created. It relies on "Initial Spots" (detected enemies) which has a capped influence to prevent stat-padding by suicide scouting.

A WN8 between 600 and 900 is average for the general player base. Reaching 1000+ indicates you are contributing your own HP's worth of damage consistently. Values below 300 suggest fundamental gameplay mechanics are missing.