Moneyline Odds
Convert win and loss chances to American moneyline odds, decimal odds, and implied probability. Free online betting odds converter with payout analysis.
About This Calculator
The Moneyline Odds Calculator converts win and loss probabilities into American (moneyline) odds — the standard betting format used in US sportsbooks. Simply enter the chances for and against success, and the calculator instantly shows the moneyline odds, decimal odds, implied probability, and potential payout for any stake.
Moneyline odds, also called American odds, are expressed with a plus (+) or minus (-) sign followed by a number. The sign indicates whether the team is an underdog (+) or a favorite (-), and the number represents the profit on a $100 bet (for positive odds) or the amount needed to bet to win $100 (for negative odds). The calculator uses the formula: for underdogs, odds = (chances against / chances for) × 100; for favorites, odds = -100 / (chances against / chances for).
Regional Notes
United States: Moneyline odds are the primary format used in American sports betting across all major leagues (NFL, NBA, MLB, NHL, NCAA). Sportsbooks display these odds for every game and match.
United Kingdom & Ireland: Fractional odds (e.g. 5/2) are the traditional format. This calculator's decimal odds output is commonly used across Europe, Australia, and Canada. Moneyline odds are less common but understood in international betting contexts.
India: While cricket betting is popular, there is no standardized odds format. International sportsbooks operating in India typically use decimal or fractional odds. Understanding moneyline odds is useful for US sports betting and international exchange platforms.
This calculator is for educational and informational purposes only. It does not encourage or promote gambling. Always gamble responsibly and be aware of the laws in your jurisdiction.
Frequently Asked Questions
What are moneyline odds?
Moneyline odds, also called American odds, are a betting format centered around $100. A positive moneyline (e.g. +150) shows how much profit you make on a $100 bet. A negative moneyline (e.g. -150) shows how much you need to bet to win $100.
How do you convert win/loss chances to moneyline odds?
Divide the chances against success by the chances for success to get the odds ratio. If the ratio is 1 or greater, multiply by 100 and add a plus sign for a positive moneyline. If the ratio is less than 1, divide 100 by the ratio and add a minus sign for a negative moneyline.
What does a positive moneyline mean?
A positive moneyline (e.g. +200) indicates an underdog. It shows how much profit you would make on a $100 wager. For +200 odds, a $100 bet returns $200 in profit plus your original stake, for a total of $300.
What does a negative moneyline mean?
A negative moneyline (e.g. -150) indicates a favorite. It shows how much you need to wager to win $100 in profit. For -150 odds, you must bet $150 to win $100 profit, receiving $250 total.
How do I calculate payout from American odds?
For positive odds, divide your stake by 100 and multiply by the odds to get profit. For negative odds, divide 100 by the odds and multiply by your stake. Add your original stake to get the gross return.
What is implied probability in moneyline betting?
Implied probability converts betting odds into a percentage chance of winning. For positive odds, it is 100 divided by (odds + 100). For negative odds, it is odds divided by (odds + 100). This helps bettors assess whether a bet offers value.
Are moneyline odds used outside the US?
Moneyline or American odds are primarily used in the United States for sports betting. Other regions typically use decimal odds (Europe, Australia, Canada) or fractional odds (UK, Ireland). This calculator converts between these formats for international use.
What is the difference between moneyline and decimal odds?
Moneyline odds use plus/minus signs centered on $100 stakes, while decimal odds show the total return per unit bet including stake. Decimal odds of 2.50 mean you get $2.50 back for every $1 wagered. Moneyline +150 is equivalent to decimal odds of 2.50.