If you get negative number, your bet is a lay candidate. If this value is lower than 1, you should consider laying the selection. It should be higher than one (1.00) if you plan to back your selection. If you're not sure you can estimate your team's chances correctly, Kelly calculator won't help you.
Your estimated probability of the event you are backing is crucial for Kelly criterion to work.
If you need to convert fractional odds to decimal, you can use our handy odds converter. This calculator uses decimal odds, so you can't use fractional odds used in the UK or American odds.
If you bet at traditional bookmakers, commission is 0, but you will probably get slightly better odds at betting exchanges. Bankroll is basically the amount of money you plan to use for betting - do not gamble more than you can afford to lose!
