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Fair Price Calculator
Strip the spread from YES+NO quotes to see the market's true implied probability.
Fair YES price
52.9¢
Fair NO price
47.1¢
Embedded spread (vig)
2.0¢ (2.0%)
Fair price = YES ÷ (YES + NO). Whatever the pair costs beyond 100¢ is the spread you pay.
Want the probabilities filled in for you?
The Predite scanner estimates probabilities with AI across live markets and flags the edges automatically.
Start scanning →Educational tools — not financial advice. Prediction markets involve risk of loss.