🔄 Odds Converter

Convert betting odds between American, Decimal, Fractional, and Implied Probability formats instantly

4 Formats All Major Types
Instant Conversion
100% Accurate
Moneky tilt head

Odds Converter

Enter Odds in Any Format

Positive for underdogs, negative for favorites
Most common format worldwide
Traditional UK format
Probability of outcome occurring

📊 Converted Odds

Enter odds in any format above to see conversions

Understanding Odds Formats

🇺🇸 American Odds

Most common in the US. Positive numbers show profit on $100 bet, negative shows amount needed to win $100.

+150: Win $150 on $100 bet
-200: Bet $200 to win $100

🌍 Decimal Odds

Most popular worldwide. Shows total return (stake + profit) for every $1 bet.

2.50: Win $2.50 for every $1 bet
1.50: Win $1.50 for every $1 bet

🇬🇧 Fractional Odds

Traditional UK format. Shows profit relative to stake (profit/stake).

3/2: Win $3 for every $2 bet
1/2: Win $1 for every $2 bet

📊 Implied Probability

Percentage chance of outcome occurring according to the odds.

40%: 2 out of 5 chance
66.7%: 2 out of 3 chance

Conversion Formulas

Quick Reference Formulas

American to Decimal:
• Positive: (American/100) + 1
• Negative: (100/|American|) + 1
Decimal to Implied %:
• (1/Decimal) × 100
• Example: (1/2.50) × 100 = 40%

🧮 Step-by-Step Example

Converting +150 American odds:
• To Decimal: (150/100) + 1 = 2.50
• To Fractional: 150/100 = 3/2
• To Implied %: (1/2.50) × 100 = 40%

When to Use Each Format

✅ Best Use Cases

  • American: US sportsbooks, familiar to US bettors
  • Decimal: Easy calculations, international betting
  • Fractional: Traditional horse racing, UK betting
  • Implied %: Probability assessment, value betting

💡 Pro Tips

  • Use implied probability to assess value
  • Decimal odds make parlay calculations easier
  • American odds quickly show favorite vs underdog
  • Always compare different sportsbooks

Frequently Asked Questions