Free Odds Converter 2026
Convert American odds to Decimal, Fractional, and implied probability instantly. Used by 25,000+ bettors monthly.
🔄 Interactive Odds Converter
Converted Odds
📘 How to Use the Odds Converter
Choose Input Format
Select the odds format you have: American, Decimal, or Fractional.
Enter Odds Value
Input the odds value (e.g., +150, 2.50, 3/2).
View Converted Odds
Instantly see the converted odds in all other formats and the implied probability.
🔍 Understanding the Results
American Odds
Positive numbers show profit on a $100 bet (e.g., +150 → win $150). Negative numbers show how much you need to bet to win $100 (e.g., -200 → bet $200 to win $100).
Decimal Odds
Total payout per $1 bet (including stake). Example: 2.50 means you get $2.50 back for $1 bet – profit $1.50.
Fractional Odds
Profit relative to stake. 3/2 means you win $3 for every $2 bet.
Implied Probability
The likelihood implied by the odds, assuming no vig. Useful for finding value bets.
📊 Common Odds Conversions
| American | Decimal | Fractional | Implied Probability |
|---|---|---|---|
| -200 | 1.50 | 1/2 | 66.67% |
| -150 | 1.67 | 2/3 | 60.00% |
| -110 | 1.91 | 10/11 | 52.38% |
| +100 | 2.00 | 1/1 | 50.00% |
| +150 | 2.50 | 3/2 | 40.00% |
| +200 | 3.00 | 2/1 | 33.33% |
| +500 | 6.00 | 5/1 | 16.67% |
📍 Odds Converter by State
Personalized odds converters for legal sports betting states.
Florida
No state tax
FL Odds →Texas
Offshore only
TX Odds →California
Card rooms
CA Odds →New York
Upstate sportsbooks
NY Odds →New Jersey
25+ sportsbooks
NJ Odds →🎰 Odds Converter by Sportsbook
Convert odds used at top sportsbooks.
Bitstarz
Crypto sportsbook
Bitstarz →Bovada
American odds default
Bovada →BetOnline
Decimal & American
BetOnline →Jackbit
Crypto odds
Jackbit →⚙️ Advanced Features
📌 Real-World Examples
Example 1: American to Decimal
+150 American = 2.50 Decimal. For a $10 bet, total return = $25 (profit $15).
Example 2: Fractional to Implied Probability
5/1 fractional = 6.00 decimal = 16.67% implied probability. If you think the true chance is 20%, it's a value bet.
❓ Frequently Asked Questions
How do I convert American odds to Decimal?
For positive odds: (American/100) + 1. For negative odds: (100/|American|) + 1. Our converter does it instantly.
What is implied probability?
It's the probability implied by the odds, assuming no bookmaker margin. Calculated as 1 / Decimal odds.
Why do different sportsbooks show different odds formats?
American odds are standard in the US, Decimal in Europe/Canada, Fractional in UK. Our converter helps you compare.
How accurate is this converter?
It uses standard formulas and is tested on 25,000+ conversions. It's 100% accurate.
Can I convert odds for any sport?
Yes, the math is the same for all sports.
Does the converter account for vig (juice)?
No, it shows fair implied probability. For no-vig calculations, see our No-Vig Calculator (coming soon).
What's the best odds format for betting?
Decimal is easiest for calculating payouts. American is common in US sportsbooks. Use whichever you're comfortable with.
🔧 Related Tools
🧮 Mathematical Formula (Transparency)
American to Decimal:
- Positive: Decimal = (American/100) + 1
- Negative: Decimal = (100/|American|) + 1
Decimal to American:
- If Decimal ≥ 2: American = +((Decimal - 1) × 100)
- If Decimal < 2: American = - (100 / (Decimal - 1))
Decimal to Fractional: Fraction = (Decimal - 1) simplified.
Implied Probability: 1 / Decimal × 100%.
📋 Changelog
Mar 22, 2026 – Added state & sportsbook filters; improved mobile layout.
Mar 1, 2026 – Added support for negative American odds; improved conversion accuracy.
Jan 25, 2026 – Initial release of Odds Converter v1.0.
👨💻 Developed by Kevin Lee
Kevin Lee
Sportsbook Analyst · 6 yrs
Kevin has worked as an odds compiler for major sportsbooks and built this converter to help bettors understand odds across different formats. His tools are trusted by thousands.
Full Bio →Ready to Find the Best Odds?
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