The Kelly criterion is a formula for sizing bets to maximise the long run growth of your bankroll. It balances edge against odds: the bigger your advantage and the higher the payout, the more you should stake, but never so much that a losing streak wipes you out. This calculator takes your estimated win probability and the odds on offer, then returns the full Kelly stake as a percentage of your bankroll along with a half Kelly and quarter Kelly, which many bettors prefer because they smooth out variance. If the edge is negative it will tell you not to bet at all. Enter your numbers to see the recommended stake in both percent and money terms. All math runs in your browser.
The Kelly criterion is a formula for sizing bets to maximise the long run growth of your bankroll. It balances edge against odds: the bigger your advantage and the higher the payout, the more you should stake, but never so much that a losing streak wipes you out.
Yes. Kelly Criterion Calculator is completely free, with no sign-up and no usage limits.
Yes. Kelly Criterion Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Kelly Criterion Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.