Sports betting has evolved beyond simply picking winners and losers. Today, the most popular way to bet is on Player Props—betting on individual performances like “LeBron James Over 25.5 Points” or “Patrick Mahomes Over 1.5 Touchdowns.”
Combining these props into a parlay is how bettors turn small wagers into massive payouts. However, tracking the total odds across different games and sports can be difficult. Our Prop Bet Parlay Calculator acts as your personal bet slip, allowing you to build custom tickets and instantly calculate your potential return.
Prop Parlay Builder
How to Use the Prop Bet Parlay Calculator
This tool is designed to look and feel like a modern sportsbook bet slip. It is perfect for calculating cross-sport parlays (e.g., combining an NFL prop with an NBA prop).
- Enter Wager Amount: Input the total amount you want to risk on this ticket.
- Select Odds Format:
- Use American (e.g., -110, +150) for standard US sportsbooks.
- Use Decimal (e.g., 1.91, 2.50) if you are betting in Europe or using exchange pricing.
- Add Player Props: Click “+ Add Player Prop” to add a new leg to your ticket.
- Name/Prop: Enter the player’s name and the specific stat (e.g., “T. Kelce Over 60.5 Yds”). This is for your visual organization.
- Odds: Enter the specific odds for that prop. Most standard props are -110 or -115, but “Alt Lines” can be much higher or lower.
- Review Payout: The calculator multiplies the odds of all independent events to show you the Total Profit and Estimated Payout.
Related Tools: If you are betting on props within the same game (SGP), standard math does not apply. You can learn more about correlation using our Multi-Event Probability Calculator. If you need to figure out the “Fair Price” of a prop by removing the vig, use the No-Vig Calculator.
Real-World Examples: Building a Ticket
Prop parlays allow you to mix and match sports. Here is how the math works for a typical “Cross-Sport” entry.
Example 1: The “Dual-Sport” Double
You want to combine an NBA scorer with an NFL quarterback.
- Leg 1: Luka Doncic Over 32.5 Points (Odds: -115).
- Leg 2: Josh Allen Over 1.5 Passing TDs (Odds: -130).
- Calculation: The calculator converts these American odds to decimals (1.87 × 1.77) and multiplies them.
- Total Odds: +230 (3.30).
- Result: A $50 bet pays out $165.45 total.
Example 2: The “Lotto” Ticket (High Variance)
You want to bet small to win big by combining three “Plus Money” props.
- Leg 1: Aaron Judge to hit a Home Run (+250).
- Leg 2: Shohei Ohtani to record 10+ Strikeouts (+180).
- Leg 3: Mookie Betts to score 2+ Runs (+140).
- Total Odds: +2250 (23.50).
- Result: A $10 bet pays out $235.20.
Important Note on Same Game Parlays (SGP)
Please read carefully: This calculator uses independent event probability. It assumes the outcome of Leg 1 does not affect Leg 2.
If you bet “Patrick Mahomes Over 250 Yards” AND “Travis Kelce Over 60 Yards,” these events are correlated (if Mahomes throws yards, Kelce likely catches them). Sportsbooks dramatically reduce the payout for correlated SGPs. Using this calculator for SGPs will show a payout higher than what the sportsbook will actually offer you.
Frequently Asked Questions (FAQ)
What happens if a player gets injured (Void)?
If a player sits out or the prop is voided (e.g., a “Push” on the exact number), that leg is removed from the parlay calculation. A 3-leg parlay becomes a 2-leg parlay. The rest of the ticket remains active, but the payout is reduced.
Why are the odds different on PrizePicks vs. Sportsbooks?
DFS apps like PrizePicks or Underdog usually offer Fixed Payouts (e.g., 3x for 2 picks, 6x for 3 picks) regardless of the specific probability of the event. Traditional sportsbooks (FanDuel, DraftKings) use Dynamic Odds based on the likelihood of each specific prop happening.
Can I combine Over and Under bets?
Yes. In a standard parlay, you can combine an “Over” from one game with an “Under” from another game. However, some books restrict betting the Over AND Under on the same player in the same game, as this contradicts itself or guarantees a specific result.