Prediction Market Converter
Convert between prediction market prices (cents) and traditional betting odds.
Prediction Market Odds Converter
A prediction market odds converter helps translate prediction market prices into standard betting odds. That makes comparisons much easier when you are looking at platforms that price outcomes as percentages or contract prices instead of American or decimal odds.
At the end of the day, both are expressing probability. They are just doing it in different languages. A prediction market may show a contract at 61, while a sportsbook hangs a moneyline. If you cannot quickly convert one into the other, it is harder to know where the better number is sitting.
That is why a prediction market to betting odds converter matters. It turns everything back into the same framework so you can compare price, implied probability, and value without bouncing between formats in your head. If you are looking across sportsbooks, exchanges, and prediction markets, this kind of conversion is not optional. It is how you keep the comparison honest.
Frequently Asked Questions
What is a prediction market?
A prediction market is a marketplace where people trade on the outcome of future events. Instead of betting into traditional sportsbook odds, users buy and sell contracts tied to an outcome. The price of that contract reflects the market's current view of the probability.
So if "Team A wins the Super Bowl" is trading at 65 cents, the market is effectively saying that outcome has about a 65% chance of happening.
That is what makes prediction markets different right away: the pricing is already expressed like probability. You are not staring at -145 or +130 and doing mental conversion. The market is giving you the number more directly.
Common examples people reference are Polymarket, Kalshi, and PredictIt.
How do prediction market prices work?
Prediction market prices usually trade between 0 and 100 cents or $0 and $1, depending on the platform. That price is the implied probability.
A contract trading at 35 means the market sees roughly a 35% chance of that event happening. A contract at 72 means roughly 72%.
If you buy at 65 and the event happens, the contract settles at 100. Your profit is the difference between what you paid and the final settlement value. If the event does not happen, the contract settles at 0 and you lose what you paid.
That is one reason prediction markets are so easy to read once you get used to them. The price and the probability are basically the same number.
How do you convert prediction market prices to American odds?
To convert a prediction market price to American odds, you treat the price like implied probability.
For prices above 50, the contract is the equivalent of a favorite. Formula: American Odds = -(Price / (100 - Price)) × 100
For prices below 50, the contract is the equivalent of an underdog. Formula: American Odds = ((100 - Price) / Price) × 100
Example:
A prediction market price of 65 converts to about -186 A prediction market price of 40 converts to about +150
That is why a prediction market odds converter is useful. It lets you compare contracts to sportsbook prices on the same scale instead of eyeballing one against the other.
What is the difference between Polymarket and traditional sportsbooks?
The biggest difference is structure.
A traditional sportsbook posts odds and takes the other side of the action in one way or another, while a prediction market is built around trading contracts whose prices move with supply and demand.
There are a few practical differences that matter:
Pricing: prediction markets usually show probability more directly through contract price; sportsbooks show it through odds Fees and margin: sportsbooks build vig into the line; prediction markets tend to work with trading fees or platform fees instead Market types: sportsbooks mostly stay in sports; prediction markets often branch into politics, macro events, crypto, entertainment, and other real-world outcomes Workflow: in a sportsbook, you place a bet and wait; in a prediction market, users may be able to enter and exit positions before settlement depending on platform structure
From a bettor's point of view, the real value is comparison. If a prediction market is implying one probability and a sportsbook is implying another, that difference may matter.