Odds Calculator
Enter odds in any format and instantly see the conversion to all formats, the implied probability, and exact payout for any stake. Useful for line shopping across Missouri sportsbooks that occasionally show different formats.
Implied Probability —
Profit if Bet Wins —
Total Return —
How odds formats compare
| Format | Example | Meaning |
|---|---|---|
| American | −150 / +130 | Negative = favorite (risk to win $100). Positive = underdog (win on $100 stake). |
| Decimal | 1.67 / 2.30 | Stake × decimal = total return (including stake). European standard. |
| Fractional | 2/3 / 13/10 | Profit-to-stake ratio. UK/Ireland standard. 13/10 means $13 profit per $10 stake. |
Implied probability
The implied probability tells you what win rate the price assumes. A bet at +200 implies a 33.3% win probability. If you believe the actual probability is higher than the implied, there's value. If lower, the price is bad. Sportsbooks build a margin into every line, so the sum of implied probabilities on a two-way market always exceeds 100%.