American Odds to Decimal Calculator

Turn American lines into decimal values accurately. Check payouts, profit, and probability before placing picks. Use clear outputs, charts, examples, and exports with confidence.

Calculator Inputs

Reset

Plotly Graph

This chart shows how stake size changes total return and profit using your converted decimal odds.

Example Data Table

American Odds Decimal Odds Implied Probability $100 Stake Profit Total Return
+120 2.20 45.45% $120.00 $220.00
+250 3.50 28.57% $250.00 $350.00
-110 1.91 52.38% $90.91 $190.91
-200 1.50 66.67% $50.00 $150.00

Formula Used

For positive American odds:
Decimal Odds = 1 + (American Odds / 100)
For negative American odds:
Decimal Odds = 1 + (100 / |American Odds|)
Implied probability:
Positive odds: Probability = 100 / (American Odds + 100)
Negative odds: Probability = |American Odds| / (|American Odds| + 100)
Payout formulas:
Profit = Stake × (Decimal Odds - 1)
Return = Stake × Decimal Odds

How to Use This Calculator

  1. Enter the American odds value, such as +150 or -120.
  2. Add your planned stake for each wager.
  3. Set the number of identical bets you want modeled.
  4. Optionally add a rebate percent for promotions.
  5. Choose the number of decimal places for output.
  6. Optionally enter comparison decimal odds from another market.
  7. Click Convert Now to see the result summary.
  8. Review the chart, result table, and export files if needed.

FAQs

1. What are American odds?

American odds show how much profit you win on $100 for positive prices, or how much you must risk to win $100 for negative prices.

2. Why convert American odds to decimal odds?

Decimal odds make total return calculations easier. They also help compare prices across international sportsbooks because the stake is already included.

3. What does implied probability mean?

Implied probability converts the betting line into a percentage. It shows the bookmaker’s estimated chance of that outcome before adjusting for margin.

4. Why is -150 lower than +150 in decimal form?

Negative odds describe favorites, so the payout is smaller for each dollar risked. Positive odds describe underdogs, so the decimal value becomes higher.

5. Can this page estimate profit and total return?

Yes. Enter your stake and the page calculates profit per bet, return per bet, total stake, total return, and rebate-adjusted values.

6. What is the rebate field for?

The rebate field lets you model cashback promotions or loyalty credits. It adds a percentage of your total stake back into the final outcome.

7. Can I compare another decimal price?

Yes. Add comparison decimal odds to measure the difference between your converted line and another quoted market price.

8. Does this calculator support both favorites and underdogs?

Yes. It handles positive and negative American odds automatically, provided the input follows standard betting line conventions.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.