It calculates ratings for the Australian rating system.
Or select another tournament size 6 Games - 12 Games - 24 Games

Devised by Barry Harridge.

ÿÿÿÿ

Have you played more than 50 rated games?				Tick for YES
What is your pre-tournament rating?
ÿÿtr> Your ÿÿ multiplier is set by this table. Prior rating 1-1799 1800 - 1999 2000+ Multiplier for an old hand 20 16 10 Multiplier for a newcomer (50 games or fewer) 30 24 15 Rating gain = multiplier *(wins - expected).
Game	Opponent	Opponent's Rating	Did you lose, draw or win?	Rating Change
1			L   D   W
2			L   D   W
3			L   D   W
4			L   D   W
5			L   D   W
6			L   D   W
7			L   D   W
8			L   D   W
9			L   D   W
10			L   D   W
11			L   D   W
12			L   D   W
13			L   D   W
14			L   D   W
15			L   D   W
16			L   D   W
17			L   D   W
18			L   D   W
		TOTAL WINS
		EXPECTED WINS
You get a bonus if you average more than 5 ratings points per game. The bonus is 2/3 * [rating change - 5 * games] .
You get feedback points if any of your opponents got bonus points. You get 1/20 of their bonus points.				_______
Ignoring feedback points (if any), your new rating is thus :

This tool is provided as a "ready reckoner". It does NOT calculate official ratings. CASPA and the author accept no liability for critical decisions which players may make based on these approximate calculations.