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A Quick Intro to Odds
Odds play a key role in your betting journey whether you're a sports betting newbie or a smart betting pro. Why? Because they tell you how likely an event is to happen (or at least how likely the sportsbook thinks it is), which directly influences how much you're able to win.
Basically, betting odds show the amount you can win for every CA$1 you stake. For example, winning with odds of +100 would get you back $2 ($1 + your stake), whereas winning with odds of +500 would get you back $6 ($5 + your stake).
The next section expands on the different odds types a bit more, so if you're just here for the calculator info, skip this section.
Understanding the Different Odds Types
You may come across odds displayed in several formats. These are simply different ways of showing odds, which can differ depending on where you are.
The three most commonly used odds types are:
- American Odds: American odds will either start with a ‘+’ or ‘-’ symbol, indicating the favourite and the underdog. Here, every +100 gives you the value of your stake back as winnings. For example, if you bet CA$10 at odds of +300, you'd get $40 back if it won ($30 + your stake). American odds are chiefly seen in the US, but are gaining popularity in Canada as sports betting increases.
- Decimal Odds: Used mainly throughout Europe, and on many Canadian betting sites as well, decimal odds are often seen as the simplest way to display odds. Here, odds of 1.0 gives you the value of your stake back as winnings. For example, if you bet CA$10 at odds of 3.0 you'd take home $40 if you won ($30 + your stake).
- Fractional Odds: Used mainly in the UK, fractional odds display odds as a fraction (unsurprisingly). Here, odds of 1/1 gives you the value of your stake back as winnings. For example, if you bet CA$10 at odds of 3/1 you'd take home $40 if you won ($30 + your stake).
Note: The implied probability is just the probability percentage linked with the odds. For example, a 100% implied probability would be 0 in American odds, 1.0 in decimal odds, and 0/1 in fractional odds.
Odds Conversion Table
| American Odds | Decimal Odds | Fractional Odds | Implied Probability |
| -500 | 1.20 | 1/5 | 83.3% |
| -450 | 1.22 | 2/9 | 81.8% |
| -400 | 1.25 | 1/4 | 80% |
| -350 | 1.29 | 2/7 | 77.8% |
| -333.3 | 1.30 | 3/10 | 76.9% |
| -300 | 1.33 | 1/3 | 75% |
| -275 | 1.36 | 4/11 | 73.3% |
| -225 | 1.44 | 4/9 | 69.2% |
| +100 | 2.00 | 1/1 | 50% |
| +125 | 2.25 | 5/4 | 44.4% |
| +137.5 | 2.38 | 11/8 | 42,1% |
| +900 | 10.00 | 9/1 | 10% |
| +1000 | 11.00 | 10/1 | 9.1% |
| +2000 | 21.00 | 20/1 | 4.8% |
| +5000 | 51.00 | 50/1 | 2% |
| +10000 | 101.00 | 100/1 | 1% |
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What Our Experts Say
"Understanding betting odds is one of the most underrated skills for bettors. Once you grasp how different formats convert and how they link to implied probability, you’re no longer guessing—you’re analyzing. That’s the first real step toward betting like a pro."
- Chris Allen, Sports & Matched Betting Expert at ProfitDuel
What is a Betting Odds Calculator / Odds Payout Calculator?
A betting odds calculator, also known as an "odds payout calculator" or simply an "odds calculator", is a sports betting tool that instantly calculates potential bet payouts based on the odds and stake you enter.
This simple but effective tool can help bettors identify and plan favourable bets, and even convert odds instantly for ultimate transparency and accuracy. Our odds calculator not only calculates the potential winnings from your bet, but instantly shows you the odds equivalents across the main three odds formats: American odds, decimal odds and fractional odds.
📊 What The Data Says
Research supported by the Responsible Gambling Council suggests that informed bettors - those who understand odds and potential outcomes - are better equipped to make controlled and responsible betting decisions. Tools like odds calculators can contribute to that understanding.
How Do I Use a Betting Odds Calculator?
Using a betting odds calculator to calculate a bet payout is simple; it takes just three steps:
- Enter Your Bet Amount: This is how much you're intending to place on your bet, A.K.A your stake.
- Enter Your Bet's Odds: This is the odds attached to your bet. If you're in Canada., this will either be in the American odds format (e.g. +100) or the decimal odds format (e.g. 2.0).
- View Your Payout: The calculator will instantly calculate the potential payout you could earn from placing your bet at those odds. It will also show you what the equivalent odds are across American odds, decimal odds and fractional odds formats, as well as the implied probability.
What Are the Benefits of a Betting Odds Calculator?
Betting odds calculators can offer bettors a wide range of benefits. Five of the most powerful include:
- Accurate Payout Estimation: A betting payout calculator helps ensure precise total payout calculation when wagering, using the bet amount and the odds. This reduces the risk of miscalculating potential returns on a wager.
- Time Efficiency: Instantly calculates your potential winnings without manually performing complex math, saving time and enabling you to focus on other aspects of your betting strategy.
- Simplifies Odds Conversion: Converts various types of betting odds, such as fractional, decimal and American, making it easier to understand potential returns in different formats.
- Informed Betting Decisions: By showing the exact payout of wagers, the calculator helps you gauge the potential risk versus reward of each bet, leading to smarter and more strategic betting choices.
- Reduces Human Error: Eliminates the possibility of manual errors in calculating payouts, ensuring accuracy and preventing costly mistakes that could affect your betting outcomes.
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What Our Experts Say
"An odds calculator is like your personal betting assistant—it won’t pick winners for you, but it ensures every calculation and conversion is spot on. The smartest bettors aren’t guessing at payouts—they’re verifying them before every wager."
- Ryan Bornemann, Sports & Casino Betting Expert at ProfitDuel
Are There Any Drawbacks of a Betting Odds Calculator?
Though an odds calculator offers a variety of powerful benefits, it's not an all-in-one solution to betting success. As such, there are a few important risks you should consider when using one:
- Changing Odds: Sportsbooks can change their moneyline odds on events in seconds, meaning that what you type into the calculator one minute may not be up-to-date the next. This is why you should always double check your odds.
- Manual Process: Though an odds calculator instantly calculates potential payout, this still leaves you to go back to the sportsbook, find the event, check your odds and place the bet yourself.
- Doesn't Guarantee Wins: Whilst an odds payout calculator can improve your betting strategy, it cannot guarantee that you win your bets - the usual risks attached to typical sports betting apply.
📊 What The Data Says
According to a 2025 internal ProfitDuel member survey, users who combined odds calculators with advanced tools like the Dutch Matcher reported an average 42% improvement in ROI on qualifying bets within the first 30 days.
Are There Any Betting Tools Better Than Odds Calculators?
While betting calculators like odds calculators, hedge calculators and bonus bet conversion calculators can be useful tools for fast-tracking bet planning, they aren't all-in-one tools that can guarantee you betting profits.
However, you might be surprised to hear there are two game changing tools coming soon to Canada that can help you to do just that. Introducing the Dutch Matcher and Dutch Matcher Calculator - the ultimate matched betting tools.
Promo Converter
The ultimate tool for locking in betting profits, the Promo Converter (previously Dutch Matcher) helps users convert sportsbook promos (like bonus bets) into profits quickly and easily through a clever process called matched betting.
Scanning all sporting events across your province, the Promo Converter matches games with the ideal mix of odds that can allow you to: a) unlock a sportsbook promo b) convert that promo into cash.
Dutch Matcher Calculator
Working hand-in-hand with the Promo Converter, the Dutch Matcher Calculator calculates the exact figure you must hedge your bet by to guarantee a profit regardless of a sporting event's outcome. This means all you have to do is follow the instructions and reap the rewards.
Together, they are the most powerful and profitable betting tools on the market today, and you can sign up for early access to both of them as a ProfitDuel member.
Get Early Access to Smart Betting Tools in Canada
Odds calculators can be a handy intro to betting tools, but if you're looking to make a serious side income betting smart, the matched betting technique is unrivalled.
The betting strategy that can remove risk, matched betting is coming to Canada with ProfitDuel. We help users around the globe turn sportsbook promos into profits using a few handy tools and guides.
At ProfitDuel, we're the masters of matched betting, having helped over 500,000 members across the U.S. and Europe earn monthly profits using our easy-to-use software, beginner walkthrough guides and friendly one-to-one support.
Now, ProfitDuel is coming to Canada - and you can get early access to our market-leading tools, expert support and friendly community, ready for our launch.
Sign up now for early access to ProfitDuel Canada.
What is ProfitDuel?
ProfitDuel’s free betting calculators make it easy to execute strategies like matched betting, arbitrage, and EV betting with precision. By simplifying complex calculations into instant results, our tools help you make fast, confident, profit-driven decisions every time you place a bet.
ProfitDuel is already trusted by over 500,000 users across the USA and UK, and is coming soon to Canada. We offer you the smart betting toolkit built to help you maximize profit and minimize risk. We equip our members with real-time data, cutting-edge tools and expert support to help our members make consistent monthly profits (in the $1,000s) through strategy, not luck.
Centered around proven techniques like matched betting, arbitrage betting, and value betting (EV betting), our betting calculators, betting tools and live market data make it easy to spot hidden edges and turn them into profit. From converting sportsbook promos and casino bonuses into cash to maximizing your long-term winnings with EV software, we’ve got you covered.
Whether you’re an experienced bettor sharpening your edge or a beginner looking for a profitable side hustle, ProfitDuel gives you the software, systems and expert support to boost your monthly earnings with confidence. Because the smartest way to bet isn’t gambling — it’s strategy.