How to use the Prediction Markets Converter

Enter a prediction market price from 0 to 100 in the top field and the calculator converts it to American, decimal, and fractional odds; type into any of the odds fields instead and it works back to the price. Prediction markets like Polymarket and Kalshi quote that price as the probability itself—a contract at 60 is the market pricing the outcome at about a 60% chance, settling at 100 if it happens and 0 if it doesn’t. So a price of 60 lines up with -150 American, 1.67 decimal, and 2/3 fractional.