SYSTEM STATUS: Online WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5.5 @ +118) TREND: HOT TREND: MLB Spread hitting 79.5% over 30 days SYSTEM: SYSTEM ALPHA: MLB Value is +538.1 units this season TREND: HOT TREND: MLB Value hitting 80.0% over 30 days SYSTEM: SYSTEM ALPHA: MLB Value is +601.4 units this season SYSTEM: SYSTEM ALPHA: MLB Value is +601.4 units this season SYSTEM: SYSTEM ALPHA: MLB Value is +1218.7 units this season TREND: HOT TREND: MLB Value hitting 79.6% over 30 days WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 4 @ +400) WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5 @ +195) TREND: HOT TREND: MLB Totals hitting 80.0% over 30 days WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5.5 @ +106) WIN: WON: Cincinnati Reds @ Milwaukee Brewers (Milwaukee Brewers -1.5 @ +126) SYSTEM: SYSTEM ALPHA: MLB Value is +1238.5 units this season WIN: WON: Cincinnati Reds @ Milwaukee Brewers (Milwaukee Brewers -1.5 @ +124) WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 3 @ +750) WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 4.5 @ +240) WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 3.5 @ +450) TREND: HOT TREND: MLB Spread hitting 79.5% over 30 days WIN: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 2.5 @ +750) RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5.5 @ +118) 0.0% EDGE: HOT TREND: MLB Spread hitting 79.5% over 30 days 0.0% EDGE: SYSTEM ALPHA: MLB Value is +538.1 units this season 0.0% EDGE: HOT TREND: MLB Value hitting 80.0% over 30 days 0.0% EDGE: SYSTEM ALPHA: MLB Value is +601.4 units this season 0.0% EDGE: SYSTEM ALPHA: MLB Value is +601.4 units this season 0.0% EDGE: SYSTEM ALPHA: MLB Value is +1218.7 units this season 0.0% EDGE: HOT TREND: MLB Value hitting 79.6% over 30 days RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 4 @ +400) RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5 @ +195) 0.0% EDGE: HOT TREND: MLB Totals hitting 80.0% over 30 days RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 5.5 @ +106) RESULT: WON: Cincinnati Reds @ Milwaukee Brewers (Milwaukee Brewers -1.5 @ +126) 0.0% EDGE: SYSTEM ALPHA: MLB Value is +1238.5 units this season RESULT: WON: Cincinnati Reds @ Milwaukee Brewers (Milwaukee Brewers -1.5 @ +124) RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 3 @ +750) RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 4.5 @ +240) RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 3.5 @ +450) 0.0% EDGE: HOT TREND: MLB Spread hitting 79.5% over 30 days RESULT: WON: San Francisco Giants @ Arizona Diamondbacks (San Francisco Giants 2.5 @ +750)

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Parlay payout, calculated instantly

Add your legs in any odds format and watch the combined odds and total payout update live — the fastest parlay maths on the web, free.

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Stake ($)

Total payout

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Profit — on your stake

Combined decimal

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Combined American

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Implied prob.

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Combined odds = the product of every leg's decimal price. The longer the parlay, the lower the chance it lands — and the more book margin compounds against you.

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Most parlays lose because the legs are correlated or each one is −EV. Our model rates every leg and surfaces the ones with a real edge — so you stack winners, not guesses.

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How the maths works

Convert each leg to decimal odds, multiply them, then multiply by your stake. Here's a three-leg parlay on a $10 stake:

Leg 1 — decimal1.91
Leg 2 — decimal2.50
Leg 3 — decimal1.80
Combined odds (1.91 × 2.50 × 1.80)8.60
Payout on $10 stake$85.95

Parlays — quick answers

How is a parlay payout calculated?

Multiply every leg's decimal odds, then multiply by your stake. 1.91 × 2.50 × 1.80 = 8.60, so $10 returns $85.95.

Why do parlays usually lose?

Every leg must win and the book's margin compounds across legs. A small edge per leg can still be a big −EV parlay.

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