Fair Exacta Payouts Racetrack Calculator

The Fair Exacta Payouts calculator shows you how much an exacta bet
should pay given the odds. The payouts are based on a paper by D.A.
Harville. In theory, bets on the fair exacta payouts on average will break
even. Bets on exactas that pay more than the fair exacta payouts should
produce a profit in the long run, in theory.

Enter the payout odds.
Click "Get Exactas" or hit the Enter key.
Click "Next" or "Previous" to display different exactas.
The exactas shown are for a $2 bet.
The win probabilities, based on the odds, are also shown.
Click "Clear" to erase the fields and start again.

Tips

You can enter expressions like 15, 3.5, 20-1, 5/2, 8-5, or scr in the
odds fields.
You can use Tab or Shift-Tab to move from one odds field to another.
Instead of clicking "Next" or "Previous" you can use the right and left
arrow keys.
Be sure to enter the odds for all entries. Leaving out an entry will
skew the results.
The maximum exacta payout shown is 999. If you see 999, the actual
fair exacta payout may be higher.
The probabilities are based on the odds.
If the odds you enter do not accurately represent the win
probabilities, then the fair exacta payouts will be inaccurate.
Even with accurate odds, the fair exacta payouts may be inaccurate if
the Harville assumptions don't apply for the given race.
Even with accurate fair exacta payouts, you can still lose by betting
on exactas that pay more than the fair exacta payouts.
We make no claim that you will win or that you will not lose if you
make the bets by following Fair Exacta Payouts.
The Fair Exacta Payouts calculator is presented for information
purposes only.
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Java Plug-in (free download.)

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Fair Exacta Payouts