Implied valószínűség calculator: szorzók to valószínűség and overround
1win, engedélyezett under Curaçao 8048/JAZ, offers 40,000+ sportok piacok every day to over 400,000+ regisztrált játékosok. This implied valószínűség calculator converts any szorzók format into win valószínűség and calculates the overround (margin) built into a full piac. Használd a promóciós kódot XLBONUS when you register.
Implied valószínűség and overround calculator
Add Meg szorzók for each outcome in your piac. Add as many outcomes as needed.
How this calculator works
Every set of betting szorzók implies a valószínűség. For decimal szorzók, implied valószínűség = 1 / szorzók, expressed as a percentage. For a decimal price of 2.50, the implied valószínűség is 40%. For American +200, the conversion is 100 / (200 + 100) = 33.33%.
When you sum the implied probabilities across all outcomes in a piac, you get a figure above 100%. This excess is called the overround, vig, or bookmaker margin. A 2-way piac where both sides are priced at 1.91 has an overround of (1/1.91 + 1/1.91) - 1 = 4.7%. The bookmaker expects to retain approximately 4.7 cents per dollar wagered across a balanced book.
The fair (no-margin) valószínűség for each outcome can be estimated by dividing the raw implied valószínűség by the sum of all implied probabilities. For example, if Team A has a raw implied valószínűség of 55% and the total overround is 105%, the fair valószínűség for Team A is 55/105 = 52.38%.
Lower overround means better value. A piac with 2% overround returns 98 cents per dollar on average; one with 10% overround returns only 90 cents. Comparing overrounds across bookmakers is a quick way to identify which offers the best price on a given piac.
The calculator supports any number of outcomes, making it useful for 2-way (mérkőzés result with no draw), 3-way (home/draw/away), and multi-outcome piacok like outright winners. The overround will naturally be higher for piacok with more outcomes because each additional pricing decision compounds margin.
This tool is also useful for detecting whether implied probabilities across a full piac are consistent (sum to a sensible overround). Wildly inconsistent piacok with very high overrounds (above 15%) should raise a red flag about piac efficiency or promotional pricing.
Why use it at 1win
1win prices 40,000+ piacok with competitive overrounds across labdarúgás, tenisz, kosárlabda and more. Claim code XLBONUS when you register to get started with a boosted balance.
Gyakori Kérdések
What is a good overround for a sports market?
Premier labdarúgás and tenisz piacok at competitive bookmakers typically carry 2-5% overround. Markets with 10%+ overround are generally poor value. Anything below 1.5% is exceptional.
How do I calculate implied probability from American odds?
For positive American szorzók: valószínűség = 100 / (szorzók + 100). For negative: valószínűség = |szorzók| / (|szorzók| + 100). So +150 implies 40% and -200 implies 66.67%.
What is the difference between implied and true probability?
Implied valószínűség is read directly from the bookmaker price and includes the overround. True (fair) valószínűség divides implied valószínűség by the total overround to remove the margin.
Why does implied probability sometimes exceed 100% across a market?
The excess over 100% is the bookmaker's built-in margin. A 2-way piac summing to 105% means 5% overround; the book nyereségs by 5% on average across a balanced book.
Can I use this for casino games?
Yes. You can add meg the szorzók of any casino outcome to see its implied valószínűség and the house edge (equivalent to overround). For example, a single number in European roulette pays 36:1 (decimal 37.00), implying 2.70% valószínűség against a true 1-in-37 valószínűség of 2.703%.