Implied probabilitet calculator: odds to probabilitet and overround
1win, i licencuar under Curaçao 8048/JAZ, offers 40,000+ sporte tregje every day to over 400,000+ lojtarë të regjistruar. This implied probabilitet calculator converts any odds format into win probabilitet and calculates the overround (margin) built into a full treg. Përdor kodin promovues XLBONUS when you register.
Implied probabilitet and overround calculator
Fut odds for each outcome in your treg. Add as many outcomes as needed.
How this calculator works
Every set of betting odds implies a probabilitet. For decimal odds, implied probabilitet = 1 / odds, expressed as a percentage. For a decimal price of 2.50, the implied probabilitet is 40%. For American +200, the conversion is 100 / (200 + 100) = 33.33%.
When you sum the implied probabilities across all outcomes in a treg, you get a figure above 100%. This excess is called the overround, vig, or bookmaker margin. A 2-way treg 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) probabilitet for each outcome can be estimated by dividing the raw implied probabilitet by the sum of all implied probabilities. For example, if Team A has a raw implied probabilitet of 55% and the total overround is 105%, the fair probabilitet for Team A is 55/105 = 52.38%.
Lower overround means better value. A treg 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 treg.
The calculator supports any number of outcomes, making it useful for 2-way (ndeshje result with no draw), 3-way (home/draw/away), and multi-outcome tregje like outright winners. The overround will naturally be higher for tregje with more outcomes because each additional pricing decision compounds margin.
This tool is also useful for detecting whether implied probabilities across a full treg are consistent (sum to a sensible overround). Wildly inconsistent tregje with very high overrounds (above 15%) should raise a red flag about treg efficiency or promotional pricing.
Why use it at 1win
1win prices 40,000+ tregje with competitive overrounds across futboll, tenis, basketboll and more. Claim code XLBONUS when you register to get started with a boosted balance.
Pyetje të Shpeshta
What is a good overround for a sports market?
Premier futboll and tenis tregje 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 odds: probabilitet = 100 / (odds + 100). For negative: probabilitet = |odds| / (|odds| + 100). So +150 implies 40% and -200 implies 66.67%.
What is the difference between implied and true probability?
Implied probabilitet is read directly from the bookmaker price and includes the overround. True (fair) probabilitet divides implied probabilitet 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 treg summing to 105% means 5% overround; the book fitims by 5% on average across a balanced book.
Can I use this for casino games?
Yes. You can fut the odds of any casino outcome to see its implied probabilitet and the house edge (equivalent to overround). For example, a single number in European roulette pays 36:1 (decimal 37.00), implying 2.70% probabilitet against a true 1-in-37 probabilitet of 2.703%.