-620 Odds Explained
- Decimal
- 1.16
- American
- -620
- Fractional
- 5/31
- Implied probability
- 86.11%
- Polymarket
- 86¢
- $100 wins
- 16.13
- American
- -620
- Fractional
- 5/31
- Implied probability
- 86.11%
- Polymarket
- 86¢
- Profit
- 16.13
- Total return
- 116.13
1.161 decimal, -620 American, 86.11% implied probability
American odds of -620 mean
you risk 620 to win 100
. In decimal notation that is 1.16, in fractional notation 5/31, and the implied probability is 86.11%. On a prediction market the same price is a 86¢ share.
What -620 pays
A 100 stake at -620 returns 116.13 in total: your 100 back plus 16.13 profit. To win exactly 100 you would stake 620.00. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 1.61 | 11.61 |
| 25 | 4.03 | 29.03 |
| 50 | 8.06 | 58.06 |
| 100 | 16.13 | 116.13 |
| 500 | 80.65 | 580.65 |
| 1,000 | 161.29 | 1,161.29 |
Break-even and long-run results
The implied probability of -620 is 86.11%, and that number is also the break-even win rate: win more often than 86.11% 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 |
|---|---|
| 50% | -41.9% |
| 55% | -36.1% |
| 60% | -30.3% |
| 65% | -24.5% |
| 86% | -0.1% |
A price of -620 is deep odds-on. Bookmakers quote it when an outcome is close to a formality, and the margin they take is proportionally large at this end of the market. Sharp bettors tend to look at the other side of such a market, or at the exchange, where the same favourite is often available a tick or two better.
The vig at -620
If both sides of a two-way market were priced at -620, the implied probabilities would add up to 72.22% above 100%. That excess is the overround, or vig; as a share of stakes it is a 41.94% 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.
-620 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -620 is worth 1.158 decimal (-633 American); at 5% it drops to 1.153 (-653). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.158 | -633 | 86.35% |
| 5% | 1.153 | -653 | 86.71% |
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does -620 mean in betting?
-620 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -620 the implied probability is 86.11% and a 100 stake returns 116.13.
What is -620 in decimal odds?
-620 converts to 1.161 in decimal odds (usually shown as 1.16). Decimal odds are the total return per unit staked, so multiply your stake by 1.161 to get the return.
What is -620 as a fraction?
-620 is 5/31 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 -620?
A 100 stake at -620 wins 16.13 in profit and returns 116.13 including the stake. To win exactly 100 you would stake 620.00.
What win rate do I need at -620?
The break-even win rate equals the implied probability, 86.11%. Winning more often than that at this price is profitable over the long run; winning less often loses money.