In sports betting, seeing a number like +450 tells you two things immediately: the team is a significant underdog, and the potential payout is much higher than your risk.
The Quick Math
+450 odds mean that for every $100 you wager, you will win $450 in profit.
If your bet wins, you collect your initial $100 stake plus the $450 profit, for a Total Payout of $550.
Payout Examples: Betting on +450
You don’t have to bet exactly $100. The ratio (4.5 to 1) applies to any amount. Here is what you would win with different stake sizes:
| Wager Amount | Profit Won | Total Payout (Return) |
|---|---|---|
| $10 | $45 | $55 |
| $20 | $90 | $110 |
| $50 | $225 | $275 |
| $100 | $450 | $550 |
If you are betting a specific amount, like $33, you don’t need to do the multiplication in your head. Use our free Odds Converter & Payout Calculator to instantly see your potential return.
The “Hidden” Math: Implied Probability
While a $450 profit sounds appealing, professional bettors focus on the risk. What is the actual percentage chance that a +450 underdog wins?
To find this, we calculate the Implied Probability:
Formula: 100 / (Odds + 100)
Math: 100 / (450 + 100) = 100 / 550 = 18.18%
Mathematically, the sportsbook expects this outcome to happen only 18.2% of the time (roughly 1 in 5.5 tries). If you bet on +450 odds blindly, you will likely lose money in the long run.
Is it a Smart Bet?
To make money on +450 odds, you need to believe the team’s real chance of winning is higher than 18.2%. If you think they have a 25% chance to win, this is a great value bet. You can verify this “edge” using our Value Bet & EV Calculator.
Converting +450 to Other Formats
If you are using a European or UK sportsbook, you might see different numbers representing the exact same payout.
- Decimal Odds: 5.50
Calculation: (450 / 100) + 1. This means you multiply your stake by 5.50 to get the total return. - Fractional Odds: 9/2
Calculation: 9 divided by 2 is 4.5. This means 4.5 units of profit per 1 unit staked.
Summary
+450 odds represent a high-risk, high-reward opportunity. The payout is 4.5x your stake ($100 wins $450), but the win probability is low (18.18%).
Because winning streaks are rare at these odds, solid money management is essential. We recommend using our Risk of Ruin Calculator to determine the safest bet size for your bankroll.