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The current web page allows you to calculate margin (vigorish) and overround for bookmakers odds, to evaluate the proposed betting markets. Also a bettor (a professional player who bets on sports) has the ability to obtain true (fair) odds and calculate stakes (amounts) for the betting arbitrage (surebets).

C1 | C2 | C3 | C1 ⊕ C2 | C1 ⊖ C2 | Margin, % |
---|---|---|---|---|---|

P1, % | P2, % | P3, % | P1 + P2 | P1 - P2 | Overround, % |

Coef, C, C1, C2, C3, ... C9 - bookies odds in decimal format (coefficients; all >= 1)

Prob, P, P1, P2, P3, ... P9 - probabilities

⊕, ⊖ - bookmakers odds Sum and Difference

Bookies Odds | Probability, % | True Odds | |
---|---|---|---|

Margin, % | Overround, % | ||

**Margin (M) and Overround (O) calculation formulas:**

M = 1 - Odds*Prob, Odds = (1 - M)/Prob

M = 1 - 1/(1/C1 + 1/C2 + ... + 1/CN), when P1 + P2 + ... + PN = 1

O = M/(1 - M), M = O/(1 + O)

Odds 1 | Odds 2 | Odds 3 | Margin, % | |
---|---|---|---|---|

Sum of Stakes | Stake 1 | Stake 2 | Stake 3 | Profit |

Set two-way (for example: W1, W2X) or three-way (for example: W1, W2, X) odds and sum of stakes (total bid) to calculate

Stake - stake (wager, bet) amount

**Calculation equations:**

Odds_1*Stake_1 = Odds_2*Stake_2 [= Odds_3*Stake_3] = (1 - M)*Sum_of_Stakes

Page time:

Wednesday

02-28-2024

02:01:16 UTC

Wednesday

02-28-2024

02:01:16 UTC