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Prediction market price → probability

Convert prices

Enter prices in cents (1–99). Leave the draw empty for 2-outcome markets.
Normalised · A61.8%
OutcomePrice (¢)ImpliedNormalisedDecimal equivalent
Outcome A———
Draw———
Outcome B———
Sum of prices —Gap from 100¢ —

One contract, step by step

  1. You pay 63¢ for one contract on outcome A.
  2. If A happens the contract pays 100¢; if not, it pays 0.
  3. So the price 63¢ is a 63% implied probability, the same as decimal odds of 1.59.

Live examples from upcoming matches

Current displayed prices for the most-followed upcoming matches, converted. Updated every few minutes.
Updated 11-02 10:34
MatchPricesSumNormalised favourite
Newcastle – Everton FCPremier League · Kalshi44¢ · 27¢ · 29¢100¢Newcastle44.0%
Villarreal – Paris Saint-Germain FCUEFA Champions League · Polymarket18¢ · 20¢ · 61¢99¢Paris Saint-Germain FC61.6%
Pakhtakor – Al Nassr ClubAFC Champions League Elite · Polymarket12¢ · 19¢ · 67¢98¢Al Nassr Club68.4%
Sport Lisboa e Benfica – FC AlvercaPrimeira Liga · Polymarket86¢ · 9¢ · 4¢99¢Sport Lisboa e Benfica86.9%
Atalanta BC – Parma Calcio 1913Serie A · Polymarket64¢ · 21¢ · 15¢100¢Atalanta BC64.0%
Seahawks – BearsNFL · Polymarket61¢ · 38¢99¢Seahawks61.6%
Al Sadd – Al Ahli Saudi ClubAFC Champions League Elite · Kalshi34¢ · 24¢ · 41¢99¢Al Ahli Saudi Club41.4%
Red Bull Bragantino – Santos FCBrasileirão Série A · Polymarket48¢ · 23¢ · 28¢99¢Red Bull Bragantino48.5%

How it works

  1. Implied probability = price in cents ÷ 100. Example: 63¢ → 63%.
  2. The prices of all outcomes rarely add up to exactly 100¢. The gap comes from the spread between buyers and sellers and from rounding.
  3. Normalised probability = price ÷ sum of all prices. Example: 63¢ and 39¢ add up to 102¢, so A = 63 ÷ 102 = 61.8%.
  4. Decimal equivalent = 100 ÷ price. Example: 40¢ → 2.50.

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Frequently asked questions

Is a Polymarket or Kalshi price the same as a probability?

Roughly, yes. A contract settles at 1 unit if the outcome happens and 0 if it does not, so a 63¢ price means traders as a group price the outcome at about 63%.

Why do Yes and No prices add up to more than 100¢?

The displayed prices come from an order book with a gap between the best buy and sell prices, and they are rounded. Dividing each price by the sum gives a normalised probability that adds up to 100%.

Which price does this page use for live examples?

The price each platform shows on its own market page for that outcome, rounded down to a whole number, the same figure shown on our match pages.

How do I compare a prediction-market price with decimal odds?

Divide 100 by the price in cents. A 40¢ contract is equivalent to decimal odds of 2.50; our odds converter does the other formats.

Does a high price mean the outcome is certain?

No. An 80¢ price still means about a one-in-five chance that it does not happen. Prices are a market estimate, not a guarantee, and past performance does not indicate future results.

See the full data on Tips