Betting Odds Calculator: Convert Odds and Calculate Payouts

In an article about betting odds, I gave formulas to calculate payouts and convert different odds formats. If you want to learn how to calculate it yourself, I refer you to that article. Below I have included calculators that will do it for you.

The mathematical formulas used in the calculators

Converting Between Odds Formats

To convert American Odds to Decimal Odds:

• If the American Odds are positive: (American Odds / 100) + 1 = Decimal Odds
• If the American Odds are negative: (100 / -American Odds) + 1 = Decimal Odds

To convert Decimal Odds to American Odds:

• If the Decimal Odds are greater than 2: (Decimal Odds – 1) * 100 = Positive American Odds
• If the Decimal Odds are less than 2: -100 / (Decimal Odds – 1) = Negative American Odds

To convert American Odds to Fractional Odds:

• If the American Odds are positive: American Odds / 100 = Fractional Odds
• If the American Odds are negative: 100 / -American Odds = Fractional Odds

Calculating Payouts and Winnings

For American Odds, if the odds are positive, the calculation is:

• (Odds / 100) * Stake = Profit
• Profit + Stake = Total Payout

If the American Odds are negative, the calculation is:

• (100 / Odds) * Stake = Profit
• Profit + Stake = Total Payout

For Decimal Odds, the calculation is simple:

• Odds * Stake = Total Payout
• Total Payout – Stake = Profit

For Fractional Odds, the calculation is:

• (Numerator / Denominator) * Stake = Profit
• Profit + Stake = Total Payout