Sports Betting Lab
Enter probabilities 1-X-2
P1 % PX % P2 %
OR Enter 1-X-2 line
1 X 2
Enter probabilities 1X-12-2X
P1X % P12 % P2X %
OR Enter 1X-12-2X line
1X 12 2X
Margin: %   

You need only to enter margin
and two any values in any row.
Probabilities are entered as percents.
Fractional values - using dots.
If you enter all the coefficients
(either 1-X-2, or 1X-12-2X),
then margin is calculated.