Elo Calculator

Official AREENA Elo & Skill Rating Simulation Engine (FIDE / STT / Swiss Tournament Model)

A

Player / Team A

Current Rating

50.0% Win Chance
600 (R9)1500 (C8)2800 (A20)
Projected: 1516
+16 pts
B

Player / Team B

Current Rating

50.0% Win Chance
600 (R9)1500 (C8)2800 (A20)
Projected: 1484
-16 pts

Match Parameters & Outcome

How AREENA Calculates Rating Adjustments

1. Win Expectancy:
E_A = 1 / (1 + 10^((R_B - R_A) / 400)) = 50.00%
E_B = 1 / (1 + 10^((R_A - R_B) / 400)) = 50.00%
2. Delta Exchange:
Δ R_A = 32 × (1 - 0.500) = +16
Δ R_B = 32 × (0 - 0.500) = -16