Betting Odds Calculator

American Odds

American odds, commonly known as US or moneyline odds, are the default odds used in America. These odds are displayed as either a positive (+) or negative (-) number. Positive odds indicate the potential profit if you bet $100, while negative odds indicate the amount you would need to bet to win $100.

For example, if the odds are +300, you would win $300 if you bet $100. If the odds are -200, you would need to bet $200 to win $100.

How to convert American odds to Decimal odds

If the American odds are positive, the formula is: Decimal odds = 1 + (American odds / 100)

If the American odds are negative, the formula is: Decimal odds = 1 - (100 / - American odds)

How to convert American odds to Fractional odds

If the American odds are positive, the formula is: Fractional odds = American odds / 100

If the American odds are negative, the formula is: Fractional odds = -100 / American odds

Decimal Odds

Decimal odds, commonly known as European odds, are expressed in a decimal number and represent the total payout, which includes the initial wager, as a multiple of the amount wagered. In other words, the decimal odds tell you how much money you stand to win for every $1 dollar you bet. To calculate your potential winnings using decimal odds, you simply multiply the odds by the amount you wish to bet.

For example, if the odds are 2.5 and you bet $100, your potential payout would be $250.

How to convert Decimal odds to American odds

If the Decimal odds are greater than 2.00, the formula is: American odds = (Decimal odds - 1) * 100

If the Decimal odds are less than 2.00, the formula is: American odds = -100 / (Decimal odds - 1)

How to convert Decimal odds to Fractional odds

The formula is: Fractional odds = Decimal odds - 1

Fractional Odds

Fractional odds are primarily used in the UK and Ireland. They are expressed as a fraction and represent the potential profit relative to the initial wager. A simple way to understand fractional odds is to think of the fraction as the payout and the denominator as the bet.

For example, if the odds are 5/1, this means that for every dollar you bet, you will get five dollars back if you win. In other words, a $100 bet would result in a $500 payout.

How to convert Fractional odds to American odds

If the fractional odds are greater than 1, the formula is: American odds = Fractional odds * 100

If the fractional odds are less than 1, the formula is: American odds = -100 / Fractional Odds

How to convert Fractional odds to Decimal odds

The formula is: Decimal odds = Fractional odds numerator + 1

Implied Odds

Implied odds refer to the conversion of traditional odds into a percentage. It’s the probability of a certain outcome based on the odds being offered.

For example, if the odds are 3/1 or +300, the bet is expected to win one in every 4 times, therefore the implied odds of that outcome would be 25%. This means in order for you to break even on the bet, you need to win 25% of the time.