American Odds
American Odds
✅ General Definition
American odds, also known as moneyline odds, are one of the three main formats for displaying betting odds. They are expressed as positive (+) or negative (-) numbers and are used primarily in the United States.
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Positive odds (+): Indicate how much profit you’d make on a $100 bet
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Negative odds (-): Indicate how much you need to bet to win $100
📊 How It Works
🔹 Positive American Odds (+)
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Example: +150
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Means: Bet $100 to win $150
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Total payout: $250 (your $100 stake + $150 profit)
🔹 Negative American Odds (-)
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Example: -200
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Means: You must bet $200 to win $100
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Total payout: $300 (your $200 stake + $100 profit)
🔄 Conversion to Other Formats
| American Odds | Decimal Odds | Implied Probability |
|---|---|---|
| -200 | 1.50 | 66.67% |
| -110 | 1.91 | 52.38% |
| +100 | 2.00 | 50.00% |
| +150 | 2.50 | 40.00% |
| +300 | 4.00 | 25.00% |
🧠 Why Use American Odds?
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Straightforward: Clear win/loss numbers for $100 reference
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Popular in US sports: NFL, NBA, MLB, etc.
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Fits well with moneyline markets
🧾 Example
Bet: Lakers to win at -120
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You bet $120
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If they win, you get $220 ($120 back + $100 profit)
Bet: Underdog Kings to win at +180
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You bet $100
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If they win, you get $280 ($100 back + $180 profit)
📌 Strategic Insights
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When comparing odds across books or formats, converting to decimal or implied probability helps you find value
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Be cautious with heavily negative odds, which can bring large losses for small wins
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Useful when building parlays or risk-based staking plans
⚠️ Common Mistakes
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Misunderstanding the plus/minus system
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Forgetting that payout includes your stake
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Not checking implied probability when comparing to other formats
🧠 Related Concepts
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Decimal Odds (used in Europe)
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Fractional Odds (used in UK/Ireland)
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Implied Probability (universal concept across formats)
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Moneyline Bet (US term that often uses American odds)
💡 Summary
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+ odds = Profit on $100 wager
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− odds = Wager needed to win $100
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Simple format but best understood alongside decimal odds for clarity
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Great for calculating expected return, risk, and value