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Odds Boost & Promo Value Calculator
Calculate the true Expected Value (EV) of sportsbook odds boosts and convert promotional offers like 'Bet $5, Get $150' into real cash values. Essential tool for maximizing sportsbook promotions.
Before boost
After boost
Your estimate
Max bet amount
Times bonus (1x, 5x, etc.)
Bonus bet value %
Standard Boost
-110 → +100
Parlay Boost
+400 → +500
SGP Boost
+600 → +700
New User Boost
-200 → +100
Featured Game
-150 → EVEN
Multi-Sport
+300 → +400
How to Evaluate Odds Boosts
Sportsbooks offer odds boosts as promotions, but not all boosts are created equal. The key to evaluating any boost is calculating the Expected Value (EV) - the average profit you'd make if you could bet the same boost infinitely. A positive EV (+EV) boost means you have a mathematical edge over the sportsbook.
Understanding Fair Odds
The "fair odds" represent what the odds would be with zero house edge (no vig). You can estimate fair odds by:
- Pinnacle method: Use sharp sportsbook lines as a benchmark
- No-vig calculator: Remove the juice from current market odds
- Consensus: Average odds across multiple sportsbooks
- Your model: If you have your own probability estimates
Promo Conversion Tips
"Bet $5, Get $150 in Bonus Bets" sounds amazing, but the actual value depends on the bonus type. Bonus bets typically convert at 70-80% of face value because the stake isn't returned on wins. Cash bonuses are worth 100%, while site credit falls somewhere in between.
Red Flags to Watch
- High rollover requirements: 10x+ rollover destroys bonus value
- Boosted parlays with correlation: Sportsbooks boost what's already overpriced
- Short expiration: Forces suboptimal bets
- Max bet limits: $10 max on a +500% EV boost = $50 total value
This calculator is for informational and educational purposes only. Results should be verified with your sportsbook before placing any wagers. All betting carries risk. Full Disclaimer
How to Use This Calculator
- 1Enter the original and boosted odds: Input the price before the boost and the enhanced price the sportsbook is offering.
- 2Add your fair (no-vig) odds: Estimate the true price using a sharp book like Pinnacle or a no-vig calculator so the tool knows the real probability.
- 3Set your stake: Enter the maximum amount you can bet on the boost.
- 4Read the EV and breakeven: Check the expected value, payout boost percentage, and breakeven win rate to decide whether the boost is +EV.
Frequently Asked Questions
How do I know if an odds boost is worth it?
A boost is worth taking when it's +EV — meaning your fair (no-vig) probability of winning is higher than the breakeven win rate implied by the boosted odds. This calculator shows both numbers and the resulting expected value in dollars and percentage.
What is the breakeven win rate on a boost?
The breakeven win rate is the implied probability of the boosted odds — the win percentage you'd need just to break even long-term. If your fair estimate of the outcome's probability is higher than this number, the boost is profitable.
Are 'Bet $5, Get $150' promos the same as odds boosts?
No. Those are bonus-bet promos, not odds boosts. Bonus bets typically convert to only 70-80% of face value because your stake isn't returned on a win. Use the Promo Value Converter on this page to find the real cash value after rollover.
Why do sportsbooks offer odds boosts?
Most boosts are marketing — they drive engagement and are often applied to already-overpriced parlays or correlated legs. Some, especially new-user and profit-boost tokens, are genuinely +EV. The math here tells you which is which.
What is a profit boost token worth?
A profit boost increases your winnings by a set percentage. On a +EV or even fair bet, a 50% profit boost on a $100 wager at +100 adds roughly $50 of expected value. The higher the odds you apply it to, the more raw value the boost returns.
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Responsible Gambling
Gambling should be entertaining, not a way to make money. Only bet what you can afford to lose, and never chase your losses.
- Betting more than you can afford to lose
- Chasing losses with bigger bets
- Lying to others about gambling habits