Voici la formule qui permet de calculer le elo :
 
 var = 20*(res-1/(1+pow(10,0-elodiff/400)))
 
 var : la variation elo
 res : le résultat 0(perte ) ou 1( gain )
 pow : puissance
 Elodiff = Votre elo - le elo de votre adversaire
 
| Elodiff | Gain | Perte |  | 500 | 1.1 | -18.9 |  | 490 | 1.1 | -18.9 |  | 480 | 1.2 | -18.8 |  | 470 | 1.3 | -18.7 |  | 460 | 1.3 | -18.7 |  | 450 | 1.4 | -18.6 |  | 440 | 1.5 | -18.5 |  | 430 | 1.6 | -18.4 |  | 420 | 1.6 | -18.4 |  | 410 | 1.7 | -18.3 |  | 400 | 1.8 | -18.2 |  | 390 | 1.9 | -18.1 |  | 380 | 2 | -18 |  | 370 | 2.1 | -17.9 |  | 360 | 2.2 | -17.8 |  | 350 | 2.4 | -17.6 |  | 340 | 2.5 | -17.5 |  | 330 | 2.6 | -17.4 |  | 320 | 2.7 | -17.3 |  | 310 | 2.9 | -17.1 |  | 300 | 3 | -17 |  | 290 | 3.2 | -16.8 |  | 280 | 3.3 | -16.7 |  | 270 | 3.5 | -16.5 |  | 260 | 3.7 | -16.3 |  | 250 | 3.8 | -16.2 |  | 240 | 4 | -16 |  | 230 | 4.2 | -15.8 |  | 220 | 4.4 | -15.6 |  | 210 | 4.6 | -15.4 |  | 200 | 4.8 | -15.2 |  | 190 | 5 | -15 |  | 180 | 5.2 | -14.8 |  | 170 | 5.5 | -14.5 |  | 160 | 5.7 | -14.3 |  | 150 | 5.9 | -14.1 |  | 140 | 6.2 | -13.8 |  | 130 | 6.4 | -13.6 |  | 120 | 6.7 | -13.3 |  | 110 | 6.9 | -13.1 |  | 100 | 7.2 | -12.8 |  | 90 | 7.5 | -12.5 |  | 80 | 7.7 | -12.3 |  | 70 | 8 | -12 |  | 60 | 8.3 | -11.7 |  | 50 | 8.6 | -11.4 |  | 40 | 8.9 | -11.1 |  | 30 | 9.1 | -10.9 |  | 20 | 9.4 | -10.6 |  | 10 | 9.7 | -10.3 |  | 0 | 10 | -10 |  | -10 | 10.3 | -9.7 |  | -20 | 10.6 | -9.4 |  | -30 | 10.9 | -9.1 |  | -40 | 11.1 | -8.9 |  | -50 | 11.4 | -8.6 |  | -60 | 11.7 | -8.3 |  | -70 | 12 | -8 |  | -80 | 12.3 | -7.7 |  | -90 | 12.5 | -7.5 |  | -100 | 12.8 | -7.2 |  | -110 | 13.1 | -6.9 |  | -120 | 13.3 | -6.7 |  | -130 | 13.6 | -6.4 |  | -140 | 13.8 | -6.2 |  | -150 | 14.1 | -5.9 |  | -160 | 14.3 | -5.7 |  | -170 | 14.5 | -5.5 |  | -180 | 14.8 | -5.2 |  | -190 | 15 | -5 |  | -200 | 15.2 | -4.8 |  | -210 | 15.4 | -4.6 |  | -220 | 15.6 | -4.4 |  | -230 | 15.8 | -4.2 |  | -240 | 16 | -4 |  | -250 | 16.2 | -3.8 |  | -260 | 16.3 | -3.7 |  | -270 | 16.5 | -3.5 |  | -280 | 16.7 | -3.3 |  | -290 | 16.8 | -3.2 |  | -300 | 17 | -3 |  | -310 | 17.1 | -2.9 |  | -320 | 17.3 | -2.7 |  | -330 | 17.4 | -2.6 |  | -340 | 17.5 | -2.5 |  | -350 | 17.6 | -2.4 |  | -360 | 17.8 | -2.2 |  | -370 | 17.9 | -2.1 |  | -380 | 18 | -2 |  | -390 | 18.1 | -1.9 |  | -400 | 18.2 | -1.8 |  | -410 | 18.3 | -1.7 |  | -420 | 18.4 | -1.6 |  | -430 | 18.4 | -1.6 |  | -440 | 18.5 | -1.5 |  | -450 | 18.6 | -1.4 |  | -460 | 18.7 | -1.3 |  | -470 | 18.7 | -1.3 |  | -480 | 18.8 | -1.2 |  | -490 | 18.9 | -1.1 |  | -500 | 18.9 | -1.1 |  
  |