Kelly Criterion Calculator & User Guide

This is the total amount you have in your betting account. The Kelly stake calculator will determine how much of it you should place on a particular bet. If you plan on betting more, make sure to make your deposit first, so you can calculate the full amount.

Add the odds you would like to bet on. Once you've found a market worth betting on, add it here. The Kelly Criterion calculator gives you the choice of adding the odds in decimal, fractional or American, so you won’t need an odds converter.

Here’s where your sports prediction skills come into play. You need to estimate how likely your bet is to win, as a percentage. For example, if you’re betting on Liverpool to beat Man United and you think there’s a 70% chance of this happening, add 70 to the Kelly Criterion betting calculator.

This number determines how much of your bankroll you should be willing to part with when placing your bets. Depending on the percentage you give on the previous data, you may opt for a full send, or play it safe by using just 50% to reduce the risk of a major loss. This means that you don’t have to wager the full recommended amount.

This section needs to be written as a decimal from 0.1 to 1, meaning between 10% and 100%.

This is the bookmaker’s odds converted into a percentage, indicating how likely they think an event is to occur. When put against your own calculation, you can spot potential value straight away. It’s a crucial part for any Kelly staking calculator.

This is the recommended percentage of your total betting balance that you should stake on a single wager. For example, if you have £1,000 in your betting balance and a recommended stake of 70%, you will wager £700.

This section does not factor in fractional Kelly betting and assumes that you’re placing your entire bankroll on the line. If you’ve added a number to the FKB Kelly calculator section, which isn’t 1, you should ignore this number.

This section will give you the recommended percentage of your balance which you should be using to bet, based on the number (between 0.1 and 1) which you added in the Fractional Kelly Betting.

So, if you have £1000, and the recommended stake without adjustment is 70%, or £700; a 0.8 FKB will recommend using 56% of your total sum, which would be £560.

This is mainly relevant if you plan on using less than the full Kelly strategy.

This shows you the actual amount you should use as your stake, determined by the fractional Kelly betting number you placed. If you didn't add a fraction, this will still show you how much you need to stake from your bankroll.

This tells you the potential profit, relative to the amount risked, as a percentage.

For example, at 2 / 1 odds you make £2 profit for every £1 you risk, so your return on wagered funds is 200%.

This is the expected value you’re potentially achieving. The higher the number, the better value you’re getting for this bet. This number is mainly calculated depending on the difference between the bookmaker’s estimate and your estimate of how likely an event is to occur.

This figure shows you what you stand to win if your bet lands, minus your stake. This is pure winnings in real money terms. In this case, betting £600 on odds of 2/1 will give you £1200 overall profit.