There’s a lot to learn when it comes to betting. However, reading odds is a good start for you to consider. Starting with three formats in American, Fractional, and Decimal, you can familiarize yourself in just a few steps.
For starters, learning how sporting odds work is the key to placing smart wagers. After all, bookies add their return margin with odds, so by the end of this guide, you should be more aware of how you can read and compare odds – no matter the format used. Continue reading below to learn more.
Sports betting odds are numerical representations suggesting the probability of a particular result in a sporting event. They are set by sportsbooks and determine how much you can win if your bet is successful. You will encounter these numbers all the time, especially if you’re betting consistently.
Odds As Payouts Vs Odds As Probability
Odds can be payout-focused, and show you how much you’d get if your bet wins. They also indicate the probability of different outcomes. For example, evens odds mean an event is equally likely to go either way. But even then, you need to understand the price bookies offer and the true likelihood of that outcome without factoring in the return margin. This margin is why odds can be different from one betting site to to another betting site.
Implied Probability Explained in Plain Terms
As we mentioned, odds can also reflect a rough estimate of the chance of an outcome occurring, which is referred to as implied probability. It’s expressed as a percentage and includes the sportsbook’s return margin. With decimal odds, for example, you can use the formula (1 ÷ Odds) × 100. For evens, this would work out to (1 ÷ 2.0) × 100, which indicates a 50% probability of an outcome.
How to Read Different Betting Odds
Whether presented as fractional, decimal, or American odds, they represent the same thing and have the same payouts. They are just expressed in different values, with each format being prominent in a different part of the world.
🏇 Fractional Odds Explained
Fractional odds are written with a slash or hyphen, e.g., 5/1. The numerator represents the amount you’ll win for every amount you stake in the denominator. In this case, a $5 bet means you’ll win a $5 return for every $1 you wager.
When calculating winnings, you must subtract your original stake from the total payout to establish your actual return. So, a $5 bet gives you $25 in return ($5 x 5) plus your original $5 wager, for a total payout of $30.
Fractional odds dominate in sports like soccer, horse racing, and cricket. Traditional bettors favor them because they are simple to interpret.
🔢 Reading Decimal Betting Odds
Decimal odds are presented as a decimal number depicting the total amount of money you’ll get if your bet wins. You use a simple multiplication method to calculate returns using decimal odds. So, if the odds are 2.50 and you bet $5, it means you’ll get a total of $12.50 ($5 x 2.50). Decimal odds automatically include the stake, making the formats easy to calculate and beginner-friendly.
Decimal odds are preferred globally because they are easy to calculate, eliminating errors. Plus, they are compatible with several calculators and apps. Professionals swear by this format because it’s quicker to identify value bets, especially during in-play betting, where odds change rapidly.
🏀 How to Read American Betting Odds
You can spot American odds with a + or – sign before the number. Favorites, which are the team most likely to win, have odds with a – sign. The number shows how much you must bet to win $100. Underdogs are the team less likely to win, and their odds have a positive number, suggesting how much you’ll win if you wager $100. The $100 benchmark is just for ease of calculation.
So, a team with -200 odds means you must wager $200 to win $100. If the odds are +200, it means a $100 wager will win you $200. Either way, your original wager is returned alongside your winnings. This format tends to confuse new bettors as they assume the + sign must denote favorites and vice versa. American odds are commonly used in sports like basketball and American football.
Comparing the Different Odds Formats
Check out the following table comparing the different odds formats you’ll find on the best
betting sites in Canada, and the relevant descriptions.
Aspect
Fractional odds
Decimal odds
American odds
How odds are written
5/4
2.25
+125
What the odds mean
You win 5 for every 4 staked
Total return is 2.25× your stake
You win 125 for every 100 staked
Stake used in the example
$10
$10
$10
Return if Team A wins
$12.50
$12.50
$12.50
Total payout (stake + return)
$22.50
$22.50
$22.50
Is the stake included in the odds?
❌
✅
❌
How the return is calculated
Stake × (5 ÷ 4)
Stake × (2.25 − 1)
Stake × (125 ÷ 100)
Best way to think of the odds
Risk vs reward ratio
Total return multiplier
Win relative to $100
Common mistakes
Forgetting stake isn’t included
Forgetting odds include the stake
Misreading + vs – values
Typical regional usage
UK, Ireland
Europe, global
United States
Practice Makes Perfect
Betting odds may be intimidating to new bettors, particularly those not mathematically savvy, but they aren’t unbreakable codes. Whether presented in American, fractional, or decimal format, they all describe the probability of an outcome and potential payouts. Your focus should be on the value of these odds, rather than the format. Confidence in interpreting these odds is gained from understanding how to calculate your payout in relation to your stake.
As with anything in life, practice makes perfect, and continuous conversions make odds reading automatic. Be sure to click the banners on this page to sign up with the best betting sites in your area.
FAQs
Decimal odds are hands down the simplest odds format and are easier to calculate. Fractional odds become intuitive with time, while American odds require practice.
No, odds show the same probability regardless of format. While the presentation may be different, the value of the odds is more important than the format.
Yes, you can. Just try to memorize common odds like 1/1 or 2.0, which represent 50% implied probability. Having a rough estimation of potential payouts will suffice in most instances unless you’re dealing with multiple wagers.
