Parlay Calculator
Add each leg to get your combined parlay odds, total payout, profit and the true implied probability of hitting it.
e.g. +150 or -110
Parlays multiply the vig. Omenizer finds the single +value bets the sharp market is mispricing instead.
See live value bets →How parlay odds work
combined_decimal = leg₁ × leg₂ × … × legₙ payout = stake × combined_decimal profit = payout − stake implied = 1 / combined_decimal
Why parlays favor the book: the vig compounds
Each leg carries the bookmaker margin, and those margins multiply. Below, every leg is a standard −110 (the book’s no-vig fair price would be +100). Watch the book’s edge grow with each leg.
| Legs | Parlay pays | Fair (no-vig) | Book keeps |
|---|---|---|---|
| 2 | +264 | +300 | 8.9% |
| 3 | +596 | +700 | 13.0% |
| 4 | +1228 | +1500 | 17.0% |
| 5 | +2436 | +3100 | 20.8% |
| 6 | +4740 | +6300 | 24.4% |
| 7 | +9140 | +12700 | 27.8% |
| 8 | +17540 | +25500 | 31.1% |
An 8-leg parlay of −110 legs hands the book ~31% — versus ~4.5% on a single −110 bet. That’s why sharp bettors favor singles and hunt for value on each leg instead.
FAQ
- How is a parlay payout calculated?
- Multiply the decimal odds of every leg together, then multiply by your stake. E.g. three legs at 2.00 → 2.00 × 2.00 × 2.00 = 8.00 decimal; a $10 stake returns $80 ($70 profit).
- Why are parlays risky?
- Every leg must win. The combined implied probability drops fast — and because each leg carries the bookmaker’s margin, the total vig compounds, making parlays higher-variance and lower-value than singles.
- Do all legs need to win?
- Yes. If any leg loses, the whole parlay loses. (A push on a leg usually drops that leg and recalculates the parlay on the rest.)
- Can I mix odds formats?
- Convert them first — this calculator uses one format at a time. Use our Odds Converter if your legs are quoted differently.
- Should I bet parlays at all?
- Occasionally for fun, but they’re −EV for most bettors: the vig compounds with every leg (see the table above). If you want long-term profit, bet the individual legs where you have an edge instead of stacking the margin.
- What’s a same-game parlay (SGP)?
- A parlay of legs from one game. Because those legs are correlated, books price SGPs with their own model — the plain multiply-the-odds math here is an approximation for SGPs, not an exact payout.
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Built by the team behind Omenizer’s real-time fair-odds engine — the same devigging and closing-line-value math that powers our live value-bet feed. Last updated July 2026.
Educational tool only. Not betting advice or a guarantee of profit.