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Parlay calculator

Add 2 to 15 legs in American, decimal or fractional odds to see the combined parlay odds, the payout and the chance that every leg wins at those prices.

Your parlay

Odds format
$47.73total payout if every leg wins
$37.73profit
+377 (4.773)parlay odds
20.95%implied chance every leg wins, margin included

What the implied chance is not. It multiplies the legs' prices, so it assumes the legs are independent and it keeps every leg's sportsbook margin, which compounds with each leg. A calibrated estimate would start from fair (no vig) chances and allow for related legs (a team winning and its quarterback passing for 300 yards are not independent), so it can be quite different. Sportsbooks settle voids, ties and related legs by their own rules.

Show the calculation
  1. Each leg as decimal odds (void legs count as 1.00): 1.9091 × 2.5
  2. Parlay decimal odds = 4.7727 (+377)
  3. Total payout = $10.00 × 4.7727 = $47.73; profit = payout minus stake = $37.73
  4. Implied chance = 1 ÷ 4.7727 = 20.95%, the product of each leg's implied chance

Calculations show hypothetical outcomes from the prices you enter. They do not predict results, and betting always involves risk.

How a parlay pays

A parlay (also called an accumulator or multi) only wins if every leg wins, and the odds of the legs are multiplied together. Example: $10 on a three leg parlay at -110, +150 and -200 has combined odds of +616 (7.159 decimal). It pays $71.59 if all three win, a profit of $61.59.

The implied chance of that parlay is 14.0%, the product of each leg's implied chance. Because every leg carries the sportsbook's margin, the real chance at fair prices would be a little higher, and the parlay's margin is bigger than any single leg's.

Implied chance versus a real estimate

The implied chance the calculator shows is just 1 divided by the parlay odds. It makes two assumptions you should know about. It assumes the legs are independent, so it multiplies their chances; legs from the same game are often linked, which is why sportsbooks price same game parlays separately. And it keeps every leg's margin, so it understates the true chance a little more with each leg you add. A calibrated estimate starts from fair (no vig) chances for each leg and allows for any link between them.

Pushes, voids and related legs

Mark a leg as void to price it at 1.00, which is how most sportsbooks settle a pushed or cancelled leg. Calculations are hypothetical: sportsbooks apply their own rules to ties, postponed games, maximum payouts and same game parlays, and those rules decide what you are actually paid.

Related guides

Common questions

How are parlay odds calculated?

Turn every leg into decimal odds and multiply them. A -110, +150 and -200 parlay is 1.909 x 2.50 x 1.50, about 7.159 in decimal or +616 in American odds.

What happens if one leg pushes?

Most sportsbooks drop a pushed or void leg and pay the parlay at the odds of the remaining legs, which is what the Void box does here. Some books have different rules, for example for two leg parlays, so check yours.

Why do parlays pay less than the true odds?

Each leg's price includes the sportsbook's margin, and multiplying the legs multiplies the margins too. Two -110 legs pay +264, while two fair coin flips would pay +300.

Can I put two bets from the same game in one parlay?

Only where the sportsbook allows it, usually as a same game parlay or bet builder. Those legs are related, so books price them together rather than simply multiplying the odds, and this calculator's result will not match.

How many legs can I add?

From 2 to 15 here. Sportsbooks set their own maximum number of legs and maximum payout.

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