Praktikus

Élő-pontszám Kalkulátor

Elo Rating Calculator

Player A Rating

Player B Rating

Match Result (Player A)

K-Factor

What is Elo Rating Calculator?

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Az Elo besorolási rendszere kiszámítja a relatív képzettségi szinteket olyan kétfős játékokban, mint a sakk, a futball vagy a tenisz. Arpad Elo készítette, előrejelzi a mérkőzések kimenetelét, és az eredmények alapján módosítja az értékeléseket.

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Képlet

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f(x)S_A = 1 for win · 0.5 for draw · 0 for loss

How to Elo Rating Calculator

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1Expected Score: E_A = 1 / (1 + 10^((R_B − R_A) / 400))
2New Rating: R_A = R_A + K × (S_A − E_A)
3S_A = 1 for win · 0.5 for draw · 0 for loss
4K-factor controls volatility — higher K means faster rating changes

Worked Examples

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Example 1

Given:Player A 1500 beats Player B 1500 at K=32

Eredmény:A gains +16 to reach 1516, B drops to 1484

Example 2

Given:Player A 1200 beats Player B 1600 at K=32

Eredmény:A gains ~+29 upset bonus, B loses only ~3

Example 3

Given:Draw between A 1800 and B 1600 at K=16

Eredmény:A loses ~3 points, B gains ~3

Elo K-Factor Guide

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K-Factor	Used For	Volatility
40	New and beginner players	Very High
32	Standard club play	High
20	Intermediate players	Medium
16	Masters and FIDE rated	Low
10	Grand Masters	Very Low

Frequently Asked Questions

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What is Elo Rating?

The Elo rating system calculates relative skill levels in two-player games such as chess, football, or tennis. Created by Arpad Elo, it predicts match outcomes and adjusts ratings based on results

How accurate is the Elo Rating calculator?

The calculator uses the standard published formula for elo rating. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Elo Rating calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Elo Rating calculator use?

The core formula is: Expected Score: E_A = 1 / (1 + 10^((R_B − R_A) / 400)). Each step in the calculation is shown so you can verify the result manually.

References

Accuracy-checked

Reviewed October 2026

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Pontos

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