Market overround
Results use the values entered and show the formula's arithmetic for this example.
Explore WinsharkHow overround is calculated
Convert each outcome price to raw implied probability using 1 divided by decimal odds. Add those probabilities; the amount above 100% is the raw overround for the entered market.
For example, odds of 2.00 and 1.80 imply 50% and 55.56%. Together they total 105.56%, which gives a raw overround of 5.56%. This is a price calculation, not a forecast.
Enter every outcome
Use the prices for all mutually exclusive outcomes in the market. A two-way market needs two prices; a three-way market needs three. The tool reports the total and excess above 100%.
Prices should come from the same market and time. If an outcome is missing, the total does not represent the full market.
Compare related prices
The odds converter changes decimal, fractional and American formats. The implied-probability calculator shows the raw reciprocal for one price, while the overround tool combines the full market.
For a stake-based return, use the single bet or accumulator calculator.
Your next step