Sports All tools

Parlay / Accumulator Calculator

Combine legs into total odds, stake return, and implied probability.

Combined price

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Worked result from default inputs (server-side math).

Leg 1	Leg 2	Leg 3	Combined decimal	Implied %
1.91	2.05	1.72	6.735	14.85%

Educational maths only. Not betting advice. Confirm live odds and terms with the operator. 18+.

Do parlays assume independent legs?

Yes for the maths shown. Real same-game parlays are correlated; the combined price is not a fair independent product.

Convert American, decimal, and fractional odds with implied probability.

Turn odds into win probability and reverse probability into fair odds.

Check if a sports bet is +EV using your win probability and the odds.