+438 Odds Explained
- Decimal
- 5.38
- American
- +438
- Fractional
- 219/50
- Implied probability
- 18.59%
- Polymarket
- 19¢
- $100 wins
- 438.00
- American
- +438
- Fractional
- 219/50
- Implied probability
- 18.59%
- Polymarket
- 19¢
- Profit
- 438.00
- Total return
- 538.00
5.380 decimal, +438 American, 18.59% implied probability
The price +438 converts to 5.38 decimal odds and 219/50 fractional odds. Read as a probability it says the bookmaker prices this outcome at 18.59%, which is the share of the time you would need to win just to break even. A prediction market would quote the same chance as 19¢.
What +438 pays
A 100 stake at +438 returns 538.00 in total: your 100 back plus 438.00 profit. To win exactly 100 you would stake 22.83. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 43.80 | 53.80 |
| 25 | 109.50 | 134.50 |
| 50 | 219.00 | 269.00 |
| 100 | 438.00 | 538.00 |
| 500 | 2,190.00 | 2,690.00 |
| 1,000 | 4,380.00 | 5,380.00 |
Break-even and long-run results
The implied probability of +438 is 18.59%, and that number is also the break-even win rate: win more often than 18.59% of the time at this price and you profit in the long run, win less often and you lose. The table shows the return on stake at a few win rates, including the break-even rate itself.
| Win rate | Return on stake |
|---|---|
| 19% | 2.2% |
| 50% | 169.0% |
| 55% | 195.9% |
| 60% | 222.8% |
| 65% | 249.7% |
+438 is a longshot. The bookmaker prices the outcome at 18.59%, and the payout of 438.00 per 100 staked is the compensation for how rarely it lands. Longshots carry more margin than any other part of the market, which is why devigging methods disagree most at prices like this one.
The vig at +438
If both sides of a two-way market were priced at +438, the implied probabilities would add up to -62.83% above 100%. That excess is the overround, or vig; as a share of stakes it is a -169.00% margin for the bookmaker. Removing it leaves fair odds of 2.00 decimal ( +100) on each side. Use the devig calculator to do the same for any market.
+438 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission +438 is worth 5.292 decimal (+429 American); at 5% it drops to 5.161 (+416). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 5.292 | +429 | 18.90% |
| 5% | 5.161 | +416 | 19.38% |
Same price in other formats
Nearby prices
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Frequently asked questions
What does +438 mean in betting?
+438 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At +438 the implied probability is 18.59% and a 100 stake returns 538.00.
What is +438 in decimal odds?
+438 converts to 5.380 in decimal odds (usually shown as 5.38). Decimal odds are the total return per unit staked, so multiply your stake by 5.380 to get the return.
What is +438 as a fraction?
+438 is 219/50 in fractional odds, the traditional bookmaker notation where the top number is profit and the bottom number is stake.
How much do I win on a 100 bet at +438?
A 100 stake at +438 wins 438.00 in profit and returns 538.00 including the stake. To win exactly 100 you would stake 22.83.
What win rate do I need at +438?
The break-even win rate equals the implied probability, 18.59%. Winning more often than that at this price is profitable over the long run; winning less often loses money.