Free Tool

Parlay Calculator

Enter up to 12 legs and your wager. Combined odds, payout, and win probability update instantly, no submit needed.

⚡Real-time results
🎯Up to 12 legs
🔄American, Decimal & Fractional

Parlay Legs

2/12
1
52.4%
2
52.4%

Wager Amount

$

Parlay Results

Total Odds

+264

3.645x decimal

Win Probability

27.4%

Potential Payout$364.46
Potential Profit$264.46
Legs2 legs
Wager$100.00

For informational purposes only. Gamble responsibly. Problem? Call 1-800-522-4700.

Leg Breakdown. Cumulative Odds

LegOddsRunning Parlay OddsRunning Implied Prob
1
-110-11052.4%
2
-110+26427.4%

How it works

How Parlay Odds Are Calculated

  1. 01

    Convert to decimal

    Positive American: (odds/100)+1. Negative American: (100/|odds|)+1. So -110 becomes 1.909.

  2. 02

    Multiply all legs

    1.909 × 1.909 = 3.64 for two -110 legs. Each leg compounds the total.

  3. 03

    Calculate payout

    Wager × parlay decimal = total payout. On $100: $100 × 3.6446 = $364.46.

  4. 04

    Implied probability

    (1 ÷ parlay decimal) × 100. The lower the probability, the higher the potential payout.

Learn more in our Parlay definition or read the full guide: What is a Parlay?

Quick reference

Common Parlay Payouts

LegsOdds (all -110)Payout on $100Implied Prob
2+264$36427.4%
3+596$69614.4%
4+1228$1,3287.5%
5+2436$2,5363.9%
6+4741$4,8412.1%

All legs at -110. Actual payouts vary by sportsbook.

Disclaimer: GamblingTerm.com is for informational purposes only. This calculator does not facilitate real-money wagering. Please gamble responsibly. Gambling problem? Call 1-800-522-4700 (National Council on Problem Gambling).