Parlay Calculator 2026
Calculate accumulator odds, payouts and win probability for multi-leg bets
Quick parlay calculation
💵 Stake Amount
🏀 Selections (0 legs)
Add selections to build your parlay
📊 Parlay Results
Add selections to see results
Parlay Math
How accumulator odds are calculated
🔢 Combined Odds
2.00 × 1.50 × 2.50 = 7.50
💰 Potential Payout
$100 × 7.50 = $750
📊 Win Probability
50% × 66.7% × 40% = 13.3%
Parlay Odds Comparison
How odds grow with more legs
| Legs | Combined Odds | Win Probability | $100 Payout |
|---|---|---|---|
| 2-leg | 4.00 | 25.0% | $400 |
| 3-leg | 8.00 | 12.5% | $800 |
| 4-leg | 16.00 | 6.3% | $1600 |
| 5-leg | 32.00 | 3.1% | $3200 |
| 6-leg | 64.00 | 1.6% | $6400 |
* Based on 2.00 odds (50% implied probability) per leg
Understanding Parlay Bets
What is a Parlay?
A parlay (or accumulator) combines multiple bets into one. All selections must win for the bet to pay out. Higher risk, but much higher potential reward.
How Odds Multiply
Each selection's odds multiply together. A 2-leg parlay with 2.00 odds each becomes 4.00 combined odds (2.00 × 2.00).
Why Probability Drops Fast
Each leg multiplies the difficulty. Three 50% bets combine to just 12.5% (0.5 × 0.5 × 0.5). This is why parlays are risky.
Parlay Strategy Tips
Keep parlays small (2-4 legs). Each added leg dramatically increases risk. Consider round robins to reduce variance.
Pro Tips
Keep Parlays Small
Each leg you add dramatically reduces win probability. Stick to 2-4 selections for a reasonable chance of winning.
Avoid Correlated Legs
Don't combine bets that depend on each other (like team to win and player to score). Sportsbooks often void these anyway.
Consider Round Robins
If you have 4+ confident picks, a round robin gives you multiple ways to win instead of all-or-nothing.
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Frequently Asked Questions
About Our Parlay Calculator
Our professional parlay calculator instantly combines multiple betting selections to show your total odds, potential payout, and win probability. Whether you're building an NFL accumulator or a soccer multi, this tool helps you understand exactly what your parlay could return.
The Pro mode includes risk analysis features like round robin calculations, helping you split large parlays into smaller combination bets. Compare expected payouts across different parlay structures to find the best balance of risk and reward.
This calculator is 100% free, supports all major odds formats (decimal, American, fractional), and works instantly as you add selections. Updated for 2026 with the latest features used by professional bettors worldwide.
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Evgeny Volkov
Verified ExpertOver 10 years developing software for the gaming industry. Advanced degree in Mathematics. Specializing in probability analysis, RNG algorithms, and mathematical gambling models.