Free tool
Odds Converter
Instantly convert between Kalshi/Polymarket, decimal, American odds and probabilities.
Converter
Quick Reference Table
| Cents | Decimal | American | Probability |
|---|---|---|---|
| 10¢ | 10.00 | +900 | 10% |
| 20¢ | 5.00 | +400 | 20% |
| 25¢ | 4.00 | +300 | 25% |
| 33¢ | 3.03 | +203 | 33% |
| 40¢ | 2.50 | +150 | 40% |
| 50¢ | 2.00 | -100 | 50% |
| 60¢ | 1.67 | -150 | 60% |
| 67¢ | 1.49 | -203 | 67% |
| 75¢ | 1.33 | -300 | 75% |
| 80¢ | 1.25 | -400 | 80% |
| 90¢ | 1.11 | -900 | 90% |
💡 On Polymarket and Kalshi, the price in cents = the market's estimated probability. A contract at 65¢ = 65% implied probability.