Implisiittinen todennäköisyys calculator: kertoimet to probability and overround
1win, licensed under Curaçao 8048/JAZ, offers 40,000+ urheilu markkinas every day to over 400,000+ rekisteröidyed pelaajat. This implied probability calculator converts any kertoimet format into win probability and calculates the overround (margin) built into a täysi markkina. Use kampanjakoodi XLBONUS when you rekisteröidy.
Implisiittinen todennäköisyys and overround calculator
Enter kertoimet for each outcome in your markkina. Add as many outcomes as needed.
How this calculator works
Every set of veikkaus kertoimet implies a probability. For decimal kertoimet, implied probability = 1 / kertoimet, expressed as a percentage. For a decimal price of 2.50, the implied probability is 40%. For American +200, the conversion is 100 / (200 + 100) = 33.33%.
When you sum the implied probabilities across all outcomes in a markkina, you get a figure above 100%. This excess is called the overround, vig, or bookmaker margin. A 2-way markkina 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 sovellusroximately 4.7 cents per dollar wagered across a balanced book.
The fair (no-margin) probability for each outcome can be estimated by dividing the raw implied probability by the sum of all implied probabilities. For example, if Team A has a raw implied probability of 55% and the yhteensä overround is 105%, the fair probability for Team A is 55/105 = 52.38%.
Lower overround means better value. A markkina 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 markkina.
The calculator supports any number of outcomes, making it useful for 2-way (match result with no draw), 3-way (home/draw/away), and multi-outcome markkinas like outright winners. The overround will naturally be higher for markkinas with more outcomes because each additional pricing decision compounds margin.
This tool is also useful for detecting whether implied probabilities across a täysi markkina are consistent (sum to a sensible overround). Wildly inconsistent markkinas with very high overrounds (above 15%) should raise a red flag about markkina efficiency or promotional pricing.
Why use it at 1win
1win prices 40,000+ markkinas with competitive overrounds across football, tennis, basketball and more. Claim code XLBONUS when you rekisteröidy to get started with a boosted balance.
FAQ
What is a good overround for a urheilu markkina?
Premier football and tennis markkinas 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 kertoimet?
For positive American kertoimet: probability = 100 / (kertoimet + 100). For negative: probability = |kertoimet| / (|kertoimet| + 100). So +150 implies 40% and -200 implies 66.67%.
What is the difference between implied and true probability?
Implisiittinen todennäköisyys is read directly from the bookmaker price and includes the overround. True (fair) probability divides implied probability by the yhteensä overround to remove the margin.
Why does implied probability sometimes exceed 100% across a markkina?
The excess over 100% is the bookmaker's built-in margin. A 2-way markkina summing to 105% means 5% overround; the book profits by 5% on average across a balanced book.
Can I use this for kasinopelit?
Yes. You can enter the kertoimet of any casino outcome to see its implied probability and the house edge (equivalent to overround). For example, a single number in European roulette pays 36:1 (decimal 37.00), implying 2.70% probability against a true 1-in-37 probability of 2.703%.