Last updated: February 2026
Look, you're probably here to punch in some odds and see what your parlay pays. The calculator is right below — go use it. We're not going to make you scroll past a novel first.
But here's why you should come back and read the rest: the payout number is the least useful thing a parlay calculator tells you. The number that actually matters is the implied probability — the one that tells you whether you're making a smart bet or lighting money on fire at impressive odds. Most bettors never look at it. The ones who do win more often. That's not a sales pitch; it's just math.
Below is the calculator, followed by the math behind it, pre-calculated payout tables, and the strategic thinking that every other calculator page skips.
1. [Parlay Calculator Tool](#parlay-calculator-tool)
2. [How Parlay Payouts Work](#how-parlay-payouts-work)
3. [Parlay Payout Table: 2 to 12 Legs at -110](#parlay-payout-table)
4. [Quick Reference: Common Parlay Payouts](#quick-reference-common-parlay-payouts)
5. [American vs. Decimal vs. Fractional Odds](#american-vs-decimal-vs-fractional-odds)
6. [SGP Calculator: Why Same-Game Parlays Pay Differently](#sgp-calculator-why-same-game-parlays-pay-differently)
7. [How to Use the Calculator Strategically](#how-to-use-the-calculator-strategically)
8. [FAQ](#faq)
How to use the ParlayIQ Parlay Calculator:
1. Select the number of legs in your parlay (2 to 12)
2. Enter the American odds for each leg (e.g., -110, +150, -200)
3. Enter your wager amount in dollars
4. Click "Calculate" to see your total payout, profit, and implied probability
The calculator converts your American odds to decimal, multiplies them together, and returns your total payout and profit. It also shows the implied probability of the entire parlay hitting — the number most bettors ignore but shouldn't.
> Important: This calculator uses standard parlay math, which assumes each leg is independent. If you're building a same-game parlay (SGP), the actual payout from your sportsbook will be lower due to the correlation adjustment. More on that in the [SGP section below](#sgp-calculator-why-same-game-parlays-pay-differently).
[Interactive parlay calculator tool will be embedded here]
A parlay combines multiple bets into one wager. Every leg must win for it to pay out. Bigger payout than betting each leg separately, but one miss kills the whole thing.
Here's the math behind every parlay payout.
U.S. sportsbooks display American odds (-110, +150, etc.), but parlay math runs on decimal odds. The conversion:
For negative American odds (favorites):
> Decimal Odds = 1 + (100 / absolute value of the American odds)
Example: -110 → 1 + (100 / 110) = 1.909
For positive American odds (underdogs):
> Decimal Odds = 1 + (American odds / 100)
Example: +150 → 1 + (150 / 100) = 2.500
Once every leg is in decimal format, multiply them together. That's the entire parlay formula.
Example: A 3-leg parlay
| Leg | American Odds | Decimal Odds |
|---|---|---|
| Leg 1 | -110 | 1.909 |
| Leg 2 | +150 | 2.500 |
| Leg 3 | -130 | 1.769 |
Combined decimal odds: 1.909 × 2.500 × 1.769 = 8.443
Multiply the combined decimal odds by your wager.
$25 wager × 8.443 = $211.08 total payout ($186.08 profit)
Every parlay calculator in existence does exactly this — convert to decimal, multiply, apply your stake.
Most calculator pages stop at the payout. But that 8.443x multiplier also tells you the implied probability of your parlay hitting:
> Implied Probability = 1 / Combined Decimal Odds
1 / 8.443 = 11.8%
Your three-leg parlay has roughly an 11.8% chance of hitting, according to the odds. That means you'd need to win this bet more than 1 out of every 8.5 times to break even at this price.
That's the number you should be staring at — not the payout. A $211 payout sounds great until you realize you're going to lose this bet about 88% of the time.
The odds you enter already include the sportsbook's margin (the vig). A "fair" coin-flip bet would be +100 (2.000 in decimal). When the book prices it at -110 (1.909), that gap is their cut.
In a parlay, the vig compounds with each leg. A single -110 bet has about 4.5% vig. A three-leg parlay at -110 per leg has roughly 13% vig. A six-leg parlay? About 25%. The house edge grows with every leg you add.
This is why sharps avoid long parlays — not because they can't hit, but because the math gets progressively worse.
Payouts for 2 to 12-leg parlays, assuming every leg at standard -110 odds. Shown as a multiplier and as the dollar return on a $100 bet.
| Legs | Decimal Odds (multiplier) | American Odds (approx.) | $100 Payout | $100 Profit | Implied Probability | Vig Impact |
|---|---|---|---|---|---|---|
| 2 | 3.647 | +265 | $364.70 | $264.70 | 27.4% | ~9% |
| 3 | 6.965 | +597 | $696.50 | $596.50 | 14.4% | ~13% |
| 4 | 13.299 | +1230 | $1,329.90 | $1,229.90 | 7.5% | ~17% |
| 5 | 25.398 | +2440 | $2,539.80 | $2,439.80 | 3.9% | ~21% |
| 6 | 48.486 | +4749 | $4,848.60 | $4,748.60 | 2.1% | ~24% |
| 7 | 92.569 | +9157 | $9,256.90 | $9,156.90 | 1.1% | ~27% |
| 8 | 176.713 | +17571 | $17,671.30 | $17,571.30 | 0.57% | ~30% |
| 9 | 337.349 | +33635 | $33,734.90 | $33,634.90 | 0.30% | ~33% |
| 10 | 644.002 | +64300 | $64,400.20 | $64,300.20 | 0.16% | ~35% |
| 11 | 1,229.599 | +122860 | $122,959.90 | $122,859.90 | 0.08% | ~37% |
| 12 | 2,347.907 | +234691 | $234,790.70 | $234,690.70 | 0.04% | ~39% |
How to read this table: A 4-leg parlay at -110 per leg pays 13.299x your stake. Bet $10, win $132.99. The implied probability of all four legs hitting is 7.5% — meaning you'd need to hit this parlay more than 1 in every 13.3 attempts to be profitable.
The vig column shows the approximate cumulative house edge. At 2 legs, the sportsbook's built-in margin is around 9%. By 12 legs, it's approaching 39%. This is why the payout looks enormous on long parlays — the book can afford to pay big because the math is overwhelmingly in their favor.
For context, here's what these same parlays would pay at true odds (no vig) — meaning each leg at +100 instead of -110:
| Legs | True Odds Payout ($100 bet) | -110 Odds Payout ($100 bet) | You're Losing |
|---|---|---|---|
| 2 | $400.00 | $364.70 | $35.30 (8.8%) |
| 3 | $800.00 | $696.50 | $103.50 (12.9%) |
| 4 | $1,600.00 | $1,329.90 | $270.10 (16.9%) |
| 5 | $3,200.00 | $2,539.80 | $660.20 (20.6%) |
| 6 | $6,400.00 | $4,848.60 | $1,551.40 (24.2%) |
| 8 | $25,600.00 | $17,671.30 | $7,928.70 (31.0%) |
| 10 | $102,400.00 | $64,400.20 | $37,999.80 (37.1%) |
| 12 | $409,600.00 | $234,790.70 | $174,809.30 (42.7%) |
That "You're Losing" column is the real story. On a 6-leg parlay, you're giving up about 24% of the true payout to the sportsbook. On a 12-leg parlay, you're giving up nearly 43%. The longer the parlay, the worse the deal.
Not every parlay has -110 on every leg. Here are payouts for the most common odds combinations bettors actually build.
| Leg 1 | Leg 2 | $100 Payout | Implied Probability |
|---|---|---|---|
| -110 | -110 | $364.70 | 27.4% |
| -110 | +100 | $381.80 | 26.2% |
| -110 | +150 | $477.30 | 21.0% |
| -150 | -150 | $311.10 | 32.1% |
| -200 | -200 | $225.00 | 44.4% |
| +100 | +100 | $400.00 | 25.0% |
| +100 | +150 | $500.00 | 20.0% |
| +150 | +150 | $625.00 | 16.0% |
| -110 | +200 | $572.70 | 17.5% |
| -200 | +150 | $375.00 | 26.7% |
| Leg 1 | Leg 2 | Leg 3 | $100 Payout | Implied Probability |
|---|---|---|---|---|
| -110 | -110 | -110 | $696.50 | 14.4% |
| -110 | -110 | +100 | $729.10 | 13.7% |
| -110 | +100 | +150 | $954.50 | 10.5% |
| -150 | -150 | -150 | $474.10 | 21.1% |
| -200 | -110 | +150 | $715.90 | 14.0% |
| +100 | +100 | +100 | $800.00 | 12.5% |
| -110 | -110 | +200 | $1,093.60 | 9.1% |
| -130 | -110 | -110 | $660.30 | 15.1% |
| Legs | $100 Payout | Implied Probability |
|---|---|---|
| All -110 | $1,329.90 | 7.5% |
| All +100 | $1,600.00 | 6.3% |
| All -150 | $722.50 | 13.8% |
| Three -110 + one +150 | $1,741.30 | 5.7% |
| Two -110 + two +100 | $1,456.50 | 6.9% |
| Two -200 + two +150 | $937.50 | 10.7% |
Three odds formats exist. U.S. sportsbooks default to American, but parlay math runs on decimal. Here's the conversion guide.
American odds use a baseline of $100. Negative numbers tell you how much you need to bet to win $100. Positive numbers tell you how much you win on a $100 bet.
Decimal odds represent the total return per $1 wagered, including your original stake. This is the format parlay math requires.
Fractional odds (used primarily in the UK and for horse racing) show profit relative to stake.
| American | Decimal | Fractional | Implied Probability |
|---|---|---|---|
| -500 | 1.200 | 1/5 | 83.3% |
| -400 | 1.250 | 1/4 | 80.0% |
| -300 | 1.333 | 1/3 | 75.0% |
| -250 | 1.400 | 2/5 | 71.4% |
| -200 | 1.500 | 1/2 | 66.7% |
| -175 | 1.571 | 4/7 | 63.6% |
| -150 | 1.667 | 2/3 | 60.0% |
| -130 | 1.769 | 10/13 | 56.5% |
| -120 | 1.833 | 5/6 | 54.5% |
| -110 | 1.909 | 10/11 | 52.4% |
| +100 | 2.000 | 1/1 (evens) | 50.0% |
| +110 | 2.100 | 11/10 | 47.6% |
| +120 | 2.200 | 6/5 | 45.5% |
| +130 | 2.300 | 13/10 | 43.5% |
| +150 | 2.500 | 3/2 | 40.0% |
| +175 | 2.750 | 7/4 | 36.4% |
| +200 | 3.000 | 2/1 | 33.3% |
| +250 | 3.500 | 5/2 | 28.6% |
| +300 | 4.000 | 3/1 | 25.0% |
| +400 | 5.000 | 4/1 | 20.0% |
| +500 | 6.000 | 5/1 | 16.7% |
American to Decimal:
The parlay calculator above works perfectly for traditional parlays, but it will overestimate the payout for same-game parlays. The number you calculate will be higher than what any sportsbook actually offers on an SGP.
The reason: correlation. In a traditional parlay, each leg is independent — the Chiefs covering has no effect on whether the Lakers win. In an SGP, every leg comes from the same game, and outcomes are connected. If Jayson Tatum scores 35, the Celtics are more likely to win. If the game goes over, there were more possessions and more stat opportunities. Nothing in a single game happens in isolation.
Sportsbooks account for this by running your SGP legs through a correlation model that reduces the payout based on how connected the outcomes are. On top of that, most books add an additional margin — the "SGP tax" — that ranges from 5-15% beyond what the correlation alone justifies.
| Correlation Level | Typical Price Reduction | Example |
|---|---|---|
| Weakly correlated legs | 5-10% less | Player rebounds over + game spread |
| Moderately correlated legs | 10-18% less | Star scoring over + team win |
| Strongly correlated legs | 18-30% less | QB passing TDs + team win + game over |
Example: You build a 3-leg SGP on an NBA game. The standard parlay calculator says +595. The sportsbook offers +450. That ~25% gap is roughly 12% correlation adjustment and 13% SGP tax.
Run your SGP legs through the calculator above to get the "independent" price. Compare it to the actual SGP price on your sportsbook. The gap tells you how much the book is charging for correlation. If it's 30%+ on legs you believe are only weakly correlated, shop another book — pricing differences between DraftKings, FanDuel, and BetMGM can be significant.
For the full breakdown of how correlation works, how sportsbooks model it, and how to exploit the gaps, read our [SGP Correlation Strategy Guide](/guides/sgp-correlation). For a broader overview of same-game parlays, see the [Complete SGP Guide](/guides/same-game-parlays).
Most people use a parlay calculator to answer one question: "What does this pay?" That's the easy question. The harder one — and the one that actually makes you money — is "Is this parlay worth betting?"
Here's how to use the calculator as a decision-making tool, not a payout lookup.
Every parlay payout implies a probability. A +500 parlay implies a 16.7% chance of hitting. A +1200 parlay implies a 7.7% chance.
Before you place the bet, ask yourself: Do I genuinely believe this parlay hits more often than the implied probability suggests?
Here's what this looks like in practice. A bettor builds a 3-leg NBA parlay: Knicks moneyline, Jalen Brunson over 24.5 points, and the under. The sportsbook shows +450. He screenshots it, texts his group chat "let it ride," and drops $50. It feels like a smart bet — three things he believes in, solid payout.
But +450 implies an 18.2% hit rate. He needs this parlay to win roughly 1 in every 5.5 attempts to break even. When he actually thinks through each leg — Knicks are maybe 55% to win, Brunson over is close to a coin flip, the under hits maybe 48% of the time — the honest combined probability is closer to 13%. He's not getting +450 on an 18% chance. He's getting +450 on a 13% chance. That's a bad bet dressed up in a good payout.
If he'd run the numbers first, he could have dropped the weakest leg, taken a 2-leg parlay at +180, and had a bet that actually had edge. The calculator doesn't just show you what you win. It shows you what you're really risking.
Here's a practical scenario. You have a 3-leg parlay you like. The calculator shows it pays +550. You're considering adding a fourth leg at -110.
Run both versions through the calculator:
The calculator makes this comparison concrete instead of abstract.
This is especially useful for same-game parlays. Run your legs through the calculator to get the "independent" price. Then check the actual SGP price on your sportsbook.
Before you build a 6-leg parlay because the payout looks amazing, check the payout table above. A 6-leg parlay at -110 per leg has a 2.1% implied probability. That means you'd need to hit it 1 out of every 48 attempts just to break even.
If you're placing one 6-leg parlay per week, you'd need to hit roughly once a year to break even — and that's before the vig eats into your returns. Set your expectations accordingly and size your bets to survive the losing streaks.
The most underused feature. Once you know the payout, calculate exactly how often you need to win to break even:
> Break-Even Hit Rate = 1 / Decimal Odds × 100%
| Parlay Payout | Break-Even Hit Rate | What This Means |
|---|---|---|
| +265 (2-leg) | 27.4% | Need to win ~1 in 3.6 |
| +597 (3-leg) | 14.4% | Need to win ~1 in 7 |
| +1230 (4-leg) | 7.5% | Need to win ~1 in 13.3 |
| +2440 (5-leg) | 3.9% | Need to win ~1 in 25.4 |
| +4749 (6-leg) | 2.1% | Need to win ~1 in 48.5 |
Track your actual hit rate over 50+ parlays and compare it to these numbers. If you're beating the break-even rate, your process is working. If you're not, something needs to change — fewer legs, better picks, or both.
Convert each leg's American odds to decimal, then multiply all the decimal odds together to get the payout multiplier. Multiply that by your wager for the total payout. A 3-leg parlay at -110 per leg: 1.909 × 1.909 × 1.909 = 6.965, so a $10 bet pays $69.65.
A 4-leg parlay at -110 per leg pays approximately +1230, or 13.3x your stake. A $10 bet returns $132.99. The implied probability is about 7.5% — you'd need to hit roughly 1 in 13 to break even.
A 2-leg parlay at -110 per leg pays approximately +265, or 3.65x your stake — $100 returns $364.70. Two-leg parlays carry the lowest house edge of any parlay length, making them the most mathematically favorable option.
For negative odds: Decimal = 1 + (100 ÷ absolute value of odds). So -110 becomes 1.909. For positive odds: Decimal = 1 + (odds ÷ 100). So +150 becomes 2.500. Decimal odds represent total return per dollar wagered, including your stake.
The implied probability is the break-even win rate built into the odds. Divide 1 by the combined decimal odds — a 3-leg parlay at -110 has combined odds of 6.965, so the implied probability is 14.4%. You need to hit more often than that to be profitable long-term.
SGP legs come from the same game and are correlated, so sportsbooks reduce the payout to reflect the true joint probability. Most books add an additional "SGP tax" on top. The combined effect typically cuts 10-30% off what a standard calculator shows — see our [SGP Correlation Strategy Guide](/guides/sgp-correlation) for the full breakdown.
Most sportsbooks remove the pushed leg and recalculate — a 4-leg parlay with one push becomes a 3-leg parlay. Your payout drops but the bet isn't dead. Policies vary by book, so check your sportsbook's specific rules.
Mathematically, shorter is almost always better — a 2-leg parlay at -110 carries ~9% vig versus ~13% for a 3-leg. But 3-leg parlays pay meaningfully more (+597 vs. +265) and can make sense with strong conviction on all three picks. The sweet spot for most bettors is 2-4 legs.
Most U.S. sportsbooks allow 10-12 legs. DraftKings and bet365 allow up to 12; FanDuel, BetMGM, Caesars, and ESPN Bet cap at 10. The math gets dramatically worse with each leg — a 10-leg parlay at -110 has only a 0.16% chance of hitting.
A traditional parlay combines bets from different games (independent outcomes). An SGP combines bets from a single game (correlated outcomes). SGPs almost always pay less because the sportsbook adjusts for the fact that correlated legs are more likely to hit together. See our [Same-Game Parlay Guide](/guides/same-game-parlays) for the complete breakdown.
Yes — just enter the American odds from any sportsbook. The calculator gives you the correct payout for standard multi-game parlays. For SGPs, it shows what the parlay would pay if legs were independent — compare that to the actual SGP price to see how much the book is charging for correlation.
This page is part of ParlayIQ's Parlay Calculator & Payout Guide pillar. For same-game parlay strategy, see our [SGP Correlation Strategy Guide](/guides/sgp-correlation).
Last updated: February 2026