Parlay Bet Calculator

Formatting only. This does not change the calculation.
Leave on automatic unless a bare number is ambiguous.
For arbitrage this is the total to spread across all outcomes.
Comma-separated. Parlay legs, arbitrage outcomes or the whole market for a no-vig calculation.
Multiply full Kelly by this. Half Kelly (0.5) keeps most of the growth with far less variance.
Parlay decimal odds
6.957926
Betting Odds Calculator
Decimal odds
6.957926
American / moneyline odds
595.792637
Fractional odds
5610566521971/941697861380
Implied probability
14.372098 %
Hong Kong odds
5.957926
Indonesian odds
5.957926
Malay odds
-0.167844
Profit if the bet wins
595.792637
Total return (stake plus profit)
695.792637
Parlay American odds
595.792637
Parlay implied probability
14.372098 %
Break-even win probability
14.372098 %
Worked out from Kelly, J.L. Jr (1956), "A New Interpretation of Information Rate", Bell System Technical Journal 35(4), 917-926 and 3 other sources.
Multiplying the leg prices assumes the legs are independent. Correlated legs (same-game parlays) are priced differently by the book.
This is an arithmetic tool, not betting advice. Bookmaker prices already carry a margin, so the long-run expected value of a bet at posted odds is negative unless you genuinely have an edge. Gamble only what you can afford to lose.

How this is worked out

3 steps
  1. Parlay price = 1.909091 x 1.909091 x 1.909091 = 6.95792637
  2. Every leg must win, so the combined implied probability is 14.372098%.
  3. A stake of 100 returns 695.792637, a profit of 595.792637.
Legstable
legdecimalamericanimpliedProbability
11.909091-11052.380952
21.909091-11052.380952
31.909091-11052.380952

Results are general information, not financial, tax, legal, medical or engineering advice.