# How is player Efficiency Rating calculated?

WN8 (displayed with the macro `{{wn8}}`) is calculated using the following formula:

```rDAMAGE = avgDmg     / expDmg
rSPOT   = avgSpot    / expSpot
rFRAG   = avgFrag    / expFrag
rDEF    = avgDef     / expDef
rWIN    = avgWinRate / expWinRate

rWINc    = max(0,                     (rWIN    - 0.71) / (1 - 0.71) )
rDAMAGEc = max(0,                     (rDAMAGE - 0.22) / (1 - 0.22) )
rFRAGc   = max(0, min(rDAMAGEc + 0.2, (rFRAG   - 0.12) / (1 - 0.12)))
rSPOTc   = max(0, min(rDAMAGEc + 0.1, (rSPOT   - 0.38) / (1 - 0.38)))
rDEFc    = max(0, min(rDAMAGEc + 0.1, (rDEF    - 0.10) / (1 - 0.10)))

WN8 = 980*rDAMAGEc + 210*rDAMAGEc*rFRAGc + 155*rFRAGc*rSPOTc + 75*rDEFc*rFRAGc + 145*MIN(1.8,rWINc)
```

WN6 (displayed with the macro `{{wn6}}`) is calculated using the following formula:

```wn6=(1240-1040/(MIN(TIER,6))^0.164)*FRAGS
+DAMAGE*530/(184*e^(0.24*TIER)+130)
+SPOT*125 +MIN(DEF,2.2)*100
+((185/(0.17+e^((WINRATE-35)*-0.134)))-500)*0.45
+(6-MIN(TIER,6))*-60
```

Efficiency Rating (WoT-News version)(displayed with the macro `{{eff}}`) is calculated using the following formula:

```DAMAGE * (10 / (TIER + 2)) * (0.21 + 3*TIER / 100) +
FRAGS * 250 +
SPOT * 150 +
log(CAP + 1) / log(1.732) * 150 +
DEF * 150
DAMAGE - average damage
FRAGS  - average kills
SPOT   - average spots
CAP    - average capture points per game
DEF    - average defense points per game```

Your commentary and suggestions regarding the formula can be posted on the forum in the section “Ratings in XVM”.

Posted in: Common Questions