+345 Odds Explained
- Decimal
- 4.45
- American
- +345
- Fractional
- 69/20
- Implied probability
- 22.47%
- Polymarket
- 22¢
- $100 wins
- 345.00
- American
- +345
- Fractional
- 69/20
- Implied probability
- 22.47%
- Polymarket
- 22¢
- Profit
- 345.00
- Total return
- 445.00
4.450 decimal, +345 American, 22.47% implied probability
American odds of +345 mean
a 100 stake wins 345
. In decimal notation that is 4.45, in fractional notation 69/20, and the implied probability is 22.47%. On a prediction market the same price is a 22¢ share.
What +345 pays
A 100 stake at +345 returns 445.00 in total: your 100 back plus 345.00 profit. To win exactly 100 you would stake 28.99. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 34.50 | 44.50 |
| 25 | 86.25 | 111.25 |
| 50 | 172.50 | 222.50 |
| 100 | 345.00 | 445.00 |
| 500 | 1,725.00 | 2,225.00 |
| 1,000 | 3,450.00 | 4,450.00 |
Break-even and long-run results
The implied probability of +345 is 22.47%, and that number is also the break-even win rate: win more often than 22.47% 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 |
|---|---|
| 22% | -2.1% |
| 50% | 122.5% |
| 55% | 144.8% |
| 60% | 167.0% |
| 65% | 189.3% |
With an implied chance of 22.47%, a bet at +345 is expected to lose most of the time and to pay 345.00 on 100 when it does not. Outright markets, correct scores and big upsets are where these prices appear, and they are the prices bookmakers shade the hardest.
The vig at +345
If both sides of a two-way market were priced at +345, the implied probabilities would add up to -55.06% above 100%. That excess is the overround, or vig; as a share of stakes it is a -122.50% 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.
+345 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission +345 is worth 4.381 decimal (+338 American); at 5% it drops to 4.278 (+328). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 4.381 | +338 | 22.83% |
| 5% | 4.278 | +328 | 23.38% |
Same price in other formats
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does +345 mean in betting?
+345 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At +345 the implied probability is 22.47% and a 100 stake returns 445.00.
What is +345 in decimal odds?
+345 converts to 4.450 in decimal odds (usually shown as 4.45). Decimal odds are the total return per unit staked, so multiply your stake by 4.450 to get the return.
What is +345 as a fraction?
+345 is 69/20 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 +345?
A 100 stake at +345 wins 345.00 in profit and returns 445.00 including the stake. To win exactly 100 you would stake 28.99.
What win rate do I need at +345?
The break-even win rate equals the implied probability, 22.47%. Winning more often than that at this price is profitable over the long run; winning less often loses money.