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Betting (bookmaker, bettor) calculator

The current web page allows you to calculate Vigorish (Margin) and Overround for bookmaker odds, to evaluate the proposed Line (market). Also a bettor (a professional player who bets on sports) has the ability to calculate stakes (amounts) for the betting arbitrage (surebets).


Calculation of vigorish, overround, odds sum and difference


C1 C2 C3 C1 ⊕ C2 C1 ⊖ C2 Vigorish, % Overround, %
P1, % P2, % P3, % P1 + P2 P1 - P2
46.2 30.8 23.0 77.0 15.4

Coef, C, C1, C2, C3 - odds (coefficients; > 0)
Prob, P, P1, P2, P3 - probabilities

⊕, ⊖ - bookmaker odds Sum and Difference

Vigorish (M) and Overround (O) calculation formulas:

M = 1 - Coef*Prob, Coef = (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)


Arbitrage bets (arb, surebets) calculation


Coef 1Coef 2Coef 3Margin, %
Sum of StakesStake 1Stake 2Stake 3Profit

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

Stake - stake (wager, bet) amount

Calculation equations:

Coef_1*Stake_1 = Coef_2*Stake_2 [= Coef_3*Stake_3] = (1 - M)*Sum_of_Stakes

Page time:

Wednesday
11-13-2019
19:27:59 UTC