True Odds Calculator
Remove bookie margins to find the true probability of each outcome. Enter the bookie odds for all outcomes in the market, then read off the de-vigged odds using your preferred method. For an explanation of each method, see this article.
True Odds Calculator
Margin
Bookie Odds
| # | Odds |
|---|
#
EM
Equal Margin: the overround is distributed equally across all outcomes.
MPTO
Margin Proportional to Odds: larger overround is applied to longer-priced outcomes.
OR
Odds Ratio: a multiplicative model that finds the scaling factor which makes probabilities sum to 1.
LOGS
Logarithmic: applies a power function to implied probabilities to remove the margin.
| # | EM | MPTO | OR | LOGS |
|---|
EM Equal Margin
MPTO Margin Proportional to Odds
OR Odds Ratio
LOGS Logarithmic
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