Prediction Market Calculator

Convert prediction market prices, implied probability, and betting odds instantly. Use this free calculator to move between price, percentage chance, and decimal, fractional, or American odds.

Enter your market input
Enter a prediction market price between 0.01 and 0.99.
Quick examples
Converted values
Prediction Price
Probability
Decimal Odds
Fractional Odds
American Odds

How prediction market pricing works

In prediction markets, price and probability are basically the same thing. A contract trading at $0.62 implies a 62% chance. A contract at $0.25 implies a 25% chance. This makes prediction markets easy to compare with betting odds once you convert them properly.

Prediction price vs implied probability

A prediction market price is just implied probability written as a market price between $0.00 and $1.00. That means:

  • $0.50 = 50.00% probability = 2.00 decimal odds
  • $0.62 = 62.00% probability = 1.61 decimal odds
  • $0.25 = 25.00% probability = 4.00 decimal odds

Why this calculator is useful

This helps you compare prediction markets with betting markets, understand whether a price looks rich or cheap, and translate percentages into familiar betting odds. It is especially useful for users switching between sportsbooks, exchanges, and prediction market platforms.