+8400 Odds Explained
- Decimal
- 85.00
- American
- +8,400
- Fractional
- 84/1
- Implied probability
- 1.18%
- Polymarket
- 1¢
- $100 wins
- 8,400.00
- American
- +8,400
- Fractional
- 84/1
- Implied probability
- 1.18%
- Polymarket
- 1¢
- Profit
- 8,400.00
- Total return
- 8,500.00
85.000 decimal, +8,400 American, 1.18% implied probability
American odds of +8400 mean
a 100 stake wins 8400
. In decimal notation that is 85.00, in fractional notation 84/1, and the implied probability is 1.18%. On a prediction market the same price is a 1¢ share.
What +8400 pays
A 100 stake at +8400 returns 8,500.00 in total: your 100 back plus 8,400.00 profit. To win exactly 100 you would stake 1.19. The table covers the stakes people actually use.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 840.00 | 850.00 |
| 25 | 2,100.00 | 2,125.00 |
| 50 | 4,200.00 | 4,250.00 |
| 100 | 8,400.00 | 8,500.00 |
| 500 | 42,000.00 | 42,500.00 |
| 1,000 | 84,000.00 | 85,000.00 |
Break-even and long-run results
The implied probability of +8400 is 1.18%, and that number is also the break-even win rate: win more often than 1.18% 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 |
|---|---|
| 1% | -15.0% |
| 50% | 4,150.0% |
| 55% | 4,575.0% |
| 60% | 5,000.0% |
| 65% | 5,425.0% |
With an implied chance of 1.18%, a bet at +8400 is expected to lose most of the time and to pay 8,400.00 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 +8400
If both sides of a two-way market were priced at +8400, the implied probabilities would add up to -97.65% above 100%. That excess is the overround, or vig; as a share of stakes it is a -4,150.00% 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.
+8400 on a betting exchange
Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission +8400 is worth 83.320 decimal (+8,232 American); at 5% it drops to 80.800 (+7,980). Those are the bookmaker prices you would need to beat.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 83.320 | +8,232 | 1.20% |
| 5% | 80.800 | +7,980 | 1.24% |
Same price in other formats
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does +8400 mean in betting?
+8400 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At +8400 the implied probability is 1.18% and a 100 stake returns 8,500.00.
What is +8400 in decimal odds?
+8400 converts to 85.000 in decimal odds (usually shown as 85.00). Decimal odds are the total return per unit staked, so multiply your stake by 85.000 to get the return.
What is +8400 as a fraction?
+8400 is 84/1 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 +8400?
A 100 stake at +8400 wins 8,400.00 in profit and returns 8,500.00 including the stake. To win exactly 100 you would stake 1.19.
What win rate do I need at +8400?
The break-even win rate equals the implied probability, 1.18%. Winning more often than that at this price is profitable over the long run; winning less often loses money.