American Odds Explained for 2026: Learn How to Read American Odds and Understand Moneyline Betting
American odds show two things at once: which side is favored and how much you can win. The odds also indicate whether a team or player is the favorite or the underdog, while the number itself determines the payout.
A plus (+) number shows how much you would win on a 100-unit stake, while a minus (–) number shows how much you need to stake to win 100 units. Beyond that, it’s just a matter of applying the same calculation to your own stake. Read on to discover how American odds work and how to calculate winnings with real stakes.
Pros and cons of American odds
American odds are a popular way to see both who’s favored and how much you could win. Like any format, they come with advantages and a few things to watch out for:
- Clearly indicates the favourite
- Widely used format
- Easy price comparison
- Market rules may vary between markets
How do American odds work?
Whenever you see American odds, you are looking at the sportsbook communicating likelihood and price. If you see a plus (+) sign, the book is telling you the outcome is priced as less likely, so the winnings are higher for the same stake. If you see a minus (-) sign, the book is telling you the outcome is priced as more likely, so the winnings are lower for the same stake. This is also why lay betting makes more sense once you can judge whether the line is fair.
This matters because these numbers are on the screen right when your emotions are loud. Your team looks sharp. The clock is ticking. Your group chat is shouting picks. And you are expected to make sense of a board that looks like math homework. We get it. That is why we are going step by step in this article. However, terms and conditions always apply.
How to read American odds
Start by looking at the sign, then use the number to calculate your potential winnings.
Positive odds
A positive line looks like +150 or +220. This usually points to the underdog or the less likely outcome. The rule is based on a 100 unit stake. If the line is +150, a 100 unit stake lands 150 units if your pick wins. If you stake less than 100, you scale it down. If you stake more than 100, you scale it up.
Negative odds
A negative line looks like -120 or -200. This usually points to the favorite or the more likely outcome, which is why you will often see these prices on a moneyline bet. The rule is based on landing 100 units in winnings.
If the line is -200, you must stake 200 units to land 100 units in winnings if your pick wins. If you stake less than 200, the winnings scale down. If you stake more, they scale up. That said, always read the sign first. The sign tells you which rule you are using.
| What you see | What the sign suggests | Winnings calculation for your stake |
|---|---|---|
| +150 | Less likely side | stake × (150 ÷ 100) |
| +220 | Bigger long shot | stake × (220 ÷ 100) |
| -120 | Slight favourite | stake × (100 ÷ 120) |
| -200 | Strong favourite | stake × (100 ÷ 200) |
American odds: Converting to other formats
Many platforms use different displays, but the logic stays the same. Only the format changes. Some books show decimal odds instead of plus and minus numbers, which is easier because the number represents the total multiplier of your stake when the pick wins.
If you need a quick conversion, here is the clean way to do it;
- To convert positive lines to decimal format
Decimal = 1 + (odds ÷ 100). So +150 becomes: 1 + (150 ÷ 100) = 2.50
- To convert negative lines to decimal format.
Decimal = 1 + (100 ÷ absolute odds). So -200 becomes: 1 + (100 ÷ 200) = 1.50
General odds calculator
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How to sign up and place a bet using American odds
Here’s a straight step by step path to put this into practice:
Start by choosing a reputable, regulated sportsbook that is available where you are. The easiest way to avoid wasted time is to click the banner on this page because they route you to sportsbooks tailored to your jurisdiction.
Most sportsbooks have age and location rules. Some also restrict certain sports or bet types depending on local regulations. Check the eligibility notes during signup, and do not try to bypass location controls. If you travel to a restricted region, you may lose access until you return to an eligible area.
Register an account using an email and phone number. Most platforms verify at least one of them. If the sportsbook asks for identity checks later, mismatched details can delay verification and payouts.
Some sportsbooks offer promotions for new players, but they are not guaranteed and they vary by location. If the offer is live and you actually qualify for it, you will usually need to opt in. That can happen during signup or inside your account page. Do not skip the terms. Check the deadline first. Then look at minimum odds, market limits, and any wagering rules so you know what you are signing up for.
To place a normal sportsbook bet, you need money in your account. Pick a payment option that works in your region and follow the on screen steps. Some books let you play with free to play or demo markets first. That can help you practice reading odds. But it is not available everywhere, so do not assume you will see it.
Search for the sport, the event, or the match you want. Then, choose the exact market you want to bet on. Take a second to read the market name so you do not click the wrong thing. For example, “moneyline,” “spread,” “total,” or “player props” can have different rules about overtime, and a parlay bet can combine markets that do not grade the same way.
Check the sign (plus or minus), decide your stake, and calculate potential winnings. Remember: you are accepting a price, not betting on a specific number.
Tap the odds for your chosen outcome. It will appear in your bet slip. Confirm you selected the correct team, player, or outcome, and the right market type. Beginners often misclick the correct team but the wrong market.
Type your stake, then pause. Most bet slips show your potential winnings and total return. Check if it matches your own quick calculation. If it does not match, stop and re-check whether the market is priced differently than you assumed, or if the bet slip includes conditions you missed.
When everything looks correct, place the bet. After the event settles, review whether the price made sense. Over time, you will spot which odds ranges you misread and which markets you misunderstand.
American odds: Final take
As we’ve seen, the real win comes from understanding what your bet means before you click “place bet.” You now know how to figure out your potential winnings for your exact stake. The plus (+) sign shows how much you would win from a 100-unit bet, while the minus (–) sign shows how much you need to stake to win 100 units.
If you wish to put this into practice, pick a vetted sportsbook that works in your location, then click the banners on this page to head straight to options tailored to your jurisdiction. Terms and conditions always apply.
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FAQs on how American odds work
📌 What do plus and minus signs mean in American-style odds?
A plus (+) sign shows how many units you would win from a 100-unit stake, while a minus (–) sign shows how many units you need to stake to win 100 units. The sign also indicates which side is more or less likely to win, with plus for underdogs and minus for favorites.
🧮 How do I calculate winnings from my exact stake?
For positive odds, multiply your stake by the odds divided by 100. For negative odds, multiply your stake by 100 divided by the absolute value of the odds. Remember, your stake is separate from the winnings.
🌍 Can I convert American-style odds into implied probability?
Yes. For positive odds, the implied probability is calculated as 100 ÷ (odds + 100). For negative odds, it is |odds| ÷ (|odds| + 100). This helps you understand the likelihood the sportsbook is assigning to an outcome.