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  5. Decimal to American Odds Converter
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Decimal to American Odds Converter

A decimal to American odds converter translates decimal prices into US moneyline format. Decimal odds of 2.00 or higher become positive American odds, while decimal odds below 2.00 become negative American odds.

Last updated:February 22, 2026No account requiredInstant resultsAlways free
Save results freeFree account · No credit card

A decimal to American odds converter translates decimal prices into US moneyline format. Decimal odds of 2.00 or higher become positive American odds, while decimal odds below 2.00 become negative American odds.

Formula

Decimal ≥ 2: American = (Decimal - 1) × 100; Decimal < 2: American = -100 / (Decimal - 1)

For decimal odds of 2.00 or higher, subtract 1 and multiply by 100. For decimal odds below 2.00, divide -100 by decimal odds minus 1. Decimal 2.50 becomes +150; decimal 1.91 becomes about -110.

How to Use This Calculator

  1. Choose Decimal as the input format
  2. Enter the decimal price from your book or worksheet
  3. Review the American moneyline output
  4. Use the implied probability and payout outputs for quick context

When to Use This

  • •Converting international decimal odds into US moneyline odds
  • •Checking whether a decimal price is a favorite or underdog in American format
  • •Preparing decimal odds for a moneyline payout check
  1. Home
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  3. Decimal to American Odds Converter
Free Tool

Decimal to American Odds Converter

Enter decimal odds like 2.50 or 1.91 to convert them into American odds, implied probability, fractional odds, profit, and total payout.

Odds Format
$
Implied Probability
40.00%
The win rate needed to break even at these odds
American+150Moneyline format
Decimal2.50Total return per $1
Fractional3/2Profit-to-stake ratio
Break-Even40.00%Same as implied probability
Profit$75.00On $50.00 stake
Total Payout$125.00Stake plus profit

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Manual odds

Convert the line first, then move into fair-price, bet-sizing, or hedge math without re-entering the basics.

No sportsbook account sync, live odds feed, or automatic bet placement was used.

Remove vigSize with KellyModel a hedge
Simple payout calculator included

The stake field turns this converter into a moneyline payout calculator: profit is stake times net odds, while total payout includes your original stake.

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For informational and educational purposes only. Not financial or gambling advice. All calculations assume odds remain constant and bets execute as entered. Actual results may vary. Gambling involves risk of loss.

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Frequently Asked Questions

How do you convert 2.50 decimal odds to American odds?

Subtract 1 from 2.50 and multiply by 100. The result is +150.

How do you convert 1.91 decimal odds to American odds?

Use -100 divided by 1.91 minus 1. The result is about -110.

What decimal odds become positive American odds?

Decimal odds of 2.00 or higher convert to positive American odds. Decimal odds below 2.00 convert to negative American odds.

Related Glossary Terms

Moneyline

A bet on which team or player will win a game outright, with no point spread.

Implied Probability

The probability of an outcome as implied by the betting odds, including the bookmaker's margin.

True Odds

The actual mathematical probability of an outcome, without any bookmaker margin.

Vig (Vigorish)

The commission a sportsbook charges on a bet, built into the odds.

No-Vig Odds

The true fair odds after removing the sportsbook's built-in margin.

Expected Value (EV)

The average amount you can expect to win or lose per bet over time.

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