Convert any Polymarket market price into an implied probability — or go the other way and turn your probability estimate into a fair share price. Inputs update live; no submit button, no tracking.
Polymarket prices are direct probabilities. A YES share that costs $0.65 pays out $1.00 if the event resolves YES, so buyers only profit if the real-world chance is above 65%. The price is the market's implied probability.
To turn a probability back into a price, just divide your percentage by 100. A 70% belief becomes a fair price of $0.70 per share.
You'll want it any time you're comparing a market price to your own view — sizing a trade, checking whether a market has overreacted to news, or building a watchlist of mispriced markets. For deeper context on reading prices and order books, see our guide to how prediction market odds work.