Online Betting » Odds Calculator

Odds Calculator: Compare Different Odds Formats & Implied Probability

emily saunders
Writer
Fact checked by: Mike McKean
Last Updated on 26.09.2024

Are the odds you see on a sportsbook not the ones you’re familiar with? Do you want an easier way to determine how likely a sportsbook thinks a bet will win or lose? Use our odds calculator today!

We’ll delve into everything there is to know about converting odds, how to use our calculator, and how to make the most out of our free tool so that you can make more informed bets every time. We’ll even give you tips on how to use this calculator with other strategies, so jump right into this expert guide.

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Work out Your Betting Odds With Our Free Calculator

Odds calculator

What Is a Betting Odds Calculator?

A sports betting odds calculator like ours can be seen as step one for many different sports betting strategies because it fulfils two fundamental purposes.

  1. Converts odds from one format to many others instantly
  2. Gives you the implied probability of the odds you input

We have other betting calculators like our fair odds calculator or our ROI odds payout calculator to help you understand how much you could potentially win with a certain stake or what the true odds are. If you need a fast way to understand what the odds mean, then this calculator is for you.

It converts odds instantly from one form to several others. With one click of the button, you’ll have the odds you inputted in:

  • American format
  • Decimal format
  • Fractional format
  • Hong Kong format
  • Malay format
  • Indonesian format

Now, you can usually swap out odds formats right on your sportsbooks, but you’ll find that you don’t always get the full list of options. For example, many US and UK-based operators will only allow you to swap between American, decimal, or fractional odds. If you prefer to use Hong Kong odds, you’ll be out of luck – until you come to use our sports betting odds calculator.

Whichever format you choose to input, our calculator will then automatically work out the implied probability of your bet quickly and fill in the rest of the boxes to showcase the difference in odds across all formats. This means how likely it is that the sportsbook believes the bet will win based on the odds they have provided. You can use this information to help you decide if you want to make a bet on that option or not.

What’s the Main Purpose of the Odds Calculator?

Our free odds calculator is the quickest and most reliable way to calculate the odds of a bet and obtain the implied probability. It is designed to save you valuable time and provide you with a better understanding of the likelihood of the bet winning, at least according to the sportsbook you’re using.

When you use our calculator, you can be confident that you are making informed decisions. Plus, it can seamlessly integrate with our other calculators, such as the Kelly Criterion calculator, making your betting experience even more efficient and effective.

What Are Betting Odds?

Betting odds are an essential component of land-based and online sports betting. Sportsbooks have complex algorithms that take into consideration many different factors, such as:

  • Previous game performance
  • Away/Home game advantage
  • Player performance
  • News
  • Strategies
  • And more

They take those factors and quantify them so their algorithm can generate odds. Odds, in short, are how likely the sportsbook believes an event (like a team winning or a player scoring) is to occur. Odds change regularly throughout the game to reflect what’s going on.

Example of Calculating Betting Odds

Let’s put our calculator to the test. Say, for example, you are considering signing up for BetMGM but want to see just how the odds compare to other big names. BetMGM doesn’t have a publicly available odds converter (you need to log in), which means you can change the format using a converter like ours.

Thankfully, there’s our calculator. With it, you can take the odds for the Newcastle United vs Tottenham Hotspur Premier League match and easily convert the odds to all other types instantly. In this case, 17/10 for Newcastle United to win, 3/1 for a draw, and 13/10 for Tottenham Hotspur to win. By inputting 17/10 into the fractional field of the calculator, and you get the following:

Odds FormatOdds
American Odds170
Decimal Odds2.7
Fractional Odds17/10
Hong Kong Odds1.7
Indonesian Odds1.7
Malay Odds-0.5882

On top of those odds conversions, you’ll also immediately get the implied probability. This can help you better understand how likely your bookmaker thinks the bet will win, so it can help you decide if the bet is right for you or not. With this bet, the implied probability of the bet winning is 37.04%.

What’s The Benefit of Using Our Odds Calculator?

Converting odds to other formats is a very popular step for those in the research stage of their own betting strategy. Even casual players use our calculator to check the implied probability to see if their bet is worthwhile for them or not. It’s also ideal if you want to see the odds in a format that makes sense to you or if you need to reformat odds to use a different calculator.

Does This Sports Betting Odds Calculator Work on All Sports?

Yes, you can convert the odds or calculate the implied probability for any sport. Since our calculator accepts several odds formats, it can be used internationally from east to west.

Football (Soccer)

This sport has a massive betting market, giving you odds on everything from the Moneyline to a point spread to accumulators. This calculator works best with straight bets, so use it to convert your match result, both-teams-to-score, total goals over or under, and more. Bettors greatly enjoy betting on straight outcomes in football since it can be done quickly during the pre-match or live games.

Tennis

Tennis may only have two results, but it also has many different in-game events to bet on, including times, match points, and more. Like with football, the sheer number of straight bets means plenty of different opportunities to use this odds calculator and converter. You’ll also instantly be able to understand the implied probability behind each of those straight bets, making it a great sport to use with our odds calculator.

Horse Racing

There are many different horse racing results and in-game events that you can bet on, each with their own odds). Since more players in this match can all compete, and it features an array of variables from horse performance to even jockey health, there are many reasons to shop around for odds. Use this odds calculator to make it easier to compare between sportsbooks, or to simply use the insights calculated by our free tool to help you decide which bets are best for you.

Get Started With Our Free Odds Calculator

Now that you know more about why you may want to convert odds and how to use implied probability, it’s time to start using those details in your bet strategy. To use this odds calculator, all you need to do is take the odds of the bet you are considering, input them in the right box (American odds go in the American odds section, for example), and press calculate to generate your results.

Odds calculator

3 Brilliant Benefits of Using Our Odds Calculator

You may be wondering if you need to use this calculator and if you can set your preferred format right on the sportsbook. The answer is yes. There are many key benefits to using this sports betting calculator as part of your strategy, with these benefits right at the top:

1. Get Instant Odds Conversions

Converting odds is instant with our calculator. Not only will you get the information you’re after (for your own understanding or to use in another strategy or calculator), but you can also trust that it is 100% accurate.

2. Instantly Understand the Odds

Every time you use our calculator, you get the implied probability, which can be an invaluable tool for those who want to actually understand how likely their bet is to win (though there are no guarantees).

3. Let’s You Convert Odds Without Logging In

Not all sportsbooks let you change the odds format if you aren’t logged in, so if you’re shopping around for a new sportsbook, our calculator can be used to help you figure out how odds compare when the formats are different.

What Bookmakers Offer the Best Odds?

We’ve reviewed many of the best online betting sites, diving deep into key characteristics like user-friendliness, features, and, most importantly, how competitive their odds are. By going with one of our top five recommendations, you can immediately benefit by having access to some of the most competitive odds available, which will give you more workable results when using either this betting odds calculator or our betting odds payout calculator.

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Our Top Tips When You Use Our Odds Calculator

We’ve designed our sports betting odds calculator to be as simple and straightforward to use as possible, but that doesn’t mean there aren’t a few hiccups that can arise when using it, so we’ve put together a few of our top tips to keep in mind:

Make Sure You’re Entering Your Odds in the Right Section

It can be easy to put American odds in the decimal odds format box, for example, so make sure you put the odds you want converted in the right spot; otherwise, you won’t get accurate results.

Don’t Forget the (-) When Converting American Odds

Another key thing you may miss is putting the (-) when putting in your negative American odds, as this indicator changes the rest of the odds and implied probability drastically.

Know When to Put Standard Odds Versus Boosted Odds

Using standard odds is important for generating a more accurate implied probability and boosted odds when you want the format quickly converted.

What Other Calculators Do We Have On Our Site?

Converting odds and getting the implied probability for any bet is a great first step in any strategy, but it certainly doesn’t end there! That’s why we offer many other calculators to help speed up your betting strategy research and calculations. For example, if you’re trying to find out the true probability and odds for the bet you want to make, not just the implied probability, try out our fair odds calculators instead.

We also offer calculators to help those trying out a specific betting strategy, like Tricast or hedge betting, so check out our available calculators and see just how they can help boost your strategy today:

Start Calculating Those Odds Today

Our odds calculator is free to use, allowing you to convert odds for any reason and get the implied probability behind those odds. You fully understand what those odds mean no matter what your format preference is, so try it out today. You can use it as often as you want, change the values, and use this calculator with different sportsbooks or sports betting strategies. It’s so easy to use, and all answers are accurate and instant!

Betting Bonuses Change the Odds – There’s the Best Bonuses Out There Right Now

For our odds calculator to do more for you, it needs all the information you’re working with – including any betting bonuses you’re considering. For example, if you have to place a bet on odds 1.4 or longer to use a free bet, you can use our calculator to understand the implied probability of selections with longer odds than 1.4. You can also convert boosted odds if you prefer to view it in a format not supported by the sportsbook (for example, Malay odds). Not sure who’s offering the best bonuses today? Check out our top recommended providers:

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Odds Calculator FAQs

🔍 What is implied probability?

Implied probability is one of the main results you can get from our calculator. This is the odds you inputted converted into how likely the sportsbooks believe a certain event will occur so that you can make more informed wagers.

👀 What odds formats can I convert?

Our calculator quickly lets you convert between six different odds formats to suit bettors around the world: American, decimal, fractional, Hong Kong, Indonesian, and Malay.

❓ Why should I use an odds calculator?

You should use our odds calculator when your preferred odds format isn’t offered by your go-to sportsbook. You’ll also be able to quickly see the implied probability of the odds you calculate so you fully understand how likely your sportsbook thinks a bet outcome will occur. 

🤔 Can I use this odds calculator with other calculators?

Absolutely. You can take the converted odds or the implied probability from this calculator to use with our others to get fast results.

🎯 How accurate are the odds conversions?

Our odds calculator is 100% accurate if you use it correctly.