How to read odds

Odds represent the likelihood of an event occurring and are commonly used in gambling, betting, and probability discussions. There are three main formats for odds: fractional odds, decimal odds, and moneyline odds. Here's how to interpret them:


1. Fractional Odds (e.g., 5/1, 3/2):

  • How to read:
    • The first number (numerator) is how much you can win relative to your stake.
    • The second number (denominator) is your stake.
  • Example:
    • 5/1: For every $1 you bet, you win $5 (plus your original stake back, for a total of $6).
    • 3/2: For every $2 you bet, you win $3.
  • Calculation of implied probability: this is picture

2. Decimal Odds (e.g., 6.00, 2.50):

  • How to read:

    • The number represents the total return (including your stake) for every $1 bet.
  • Example:

    • 6.00: A $1 bet returns $6 (profit = $5).
    • 2.50: A $1 bet returns $2.50 (profit = $1.50).
  • Calculation of implied probability:

    this is picture


3. Moneyline Odds (e.g., +200, -150):

  • Positive odds (+): Represent how much profit you'd make on a $100 bet.
  • Negative odds (-): Represent how much you need to bet to win $100.
  • Examples:
    • +200: A $100 bet returns $200 in profit (total payout = $300).
    • -150: You need to bet $150 to win $100 (total payout = $250).
  • Calculation of implied probability: this is picture

Comparison Table

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| Odds Format | Example | Implied Probability | Profit on $10 Stake | Total Payout on $10 Stake | |--------------|---------------|---------------------|---------------------|---------------------------| | Fractional | 5/1 | 16.7% | $50 | $60 | | Decimal | 6.00 | 16.7% | $50 | $60 | | Moneyline | +500 | 16.7% | $50 | $60 |


If you're betting or analyzing probabilities, understanding these formats ensures you're making informed decisions. Let me know if you'd like more help with examples or calculations!

Dog
a "dog" typically refers to a team or player that is expected to perform poorly, lose, or has little chance of winning the game.
Payoff
In sports betting, the payoff refers to the amount of money a bettor receives from a winning wager, based on the odds and the stake placed.
over/under
also known as a totals bet, is a wager on whether the combined total score of both teams in a game will be higher (over) or lower (under) than a predetermined number set by the sportsbook.
Underdog
An underdog is a team or competitor that is expected to lose a contest or battle, especially in sports betting.
moneyline
a wager on which team or individual will win a game or event outright, regardless of the margin of victory.
Draw
In a game or competition, a "draw" means that both sides have an equal score or outcome, resulting in neither side winning or losing, which is equivalent to a "tie."
Favourite
In sports betting, the favourite refers to the team that is considered more likely to win the match and typically has lower odds.
point spread
a betting line that handicaps the favorite team by a certain number of points, which they must win by to "cover the spread," while the underdog team can lose by fewer than the specified points or win outright to cover.
Bookmaker/bookie
A bookmaker, often shortened to "bookie," is a person or organization that accepts and pays off bets on sporting and other events at agreed-upon odds.
Betting slip
a document that records the details of your wager placed on a sporting event in sports betting.