Simple Kelly Calculator

The Kelly formula or Kelly Criterion as it's often known is a mathematical formula for working out the optimum amount of money to stake on a bet to maximise the growth of your funds. You can read more about how it works in this Kelly Criterion Wikipedia article.

Usually, the bigger your edge on the odds the more you should bet but Kelly also takes into account the real chance of that bet winning and Kelly would advise a smaller bet for a 5% edge at even money (2.0) than a 5% edge at 1/3 (1.33).    



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The actual formula for Kelly Staking is below:

((odds-1) * (percentage estimate))  -  (1-percent estimate)     /    (odds-1)         X        100

*Your percentage estimate must be expressed as a decimal e.g. 70% will be 0.7

 

E.g. - Odds of 1.58 with estimated 70% chance

= ((0.58*0.7 – (1-0.7))  /   0.58)    x  100

= (0.106/0.58)   x   100

=18.28%
                         

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Table for Horse Racing in January

 Name W/L Profit £
1 Superted Horse Racing  12/82 +387.50
2 Roland65 Horse Racing  18/71 +347.80
3 Dynamite21 Horse Racing  9/24 +293.50
4 DaveStevos Horse Racing  4/8 +79.50
5 Big Al Horse Racing  18/48 +77.50
6 Tipwise Horse Racing  13/56 +20.00
7 Food4Fort Horse Racing  0/1 -10.00
8 McGhee Horse Racing  1/3 -21.70
9 HorseLays Horse Racing  52/24 -37.80
10 Brian Horses Horse Racing  0/4 -40.00
The stake for each tip is 10 units

Table for Footy & Tennis in January

 Name W/L Profit £
1 Holy Grail Football  13/12 +226.60
2 Bet Monkey Football  7/4 +178.30
3 ColdGold Football  3/1 +17.10
4 Brian Tennis Tennis  1/0 +4.00
5 Brian Footy Football  1/1 +3.00
6 MJH Footy Football  0/2 -20.00
7 Alcuni Football  3/10 -35.20
8 AntaeusTen Tennis  6/18 -81.60
9 Footy Movers Football  10/32 -94.00
The stake for each tip is 10 units

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