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-477 Odds Explained

Decimal
1.21
American
-477
Fractional
13/62
Implied probability
82.67%
Polymarket
83¢
$100 wins
20.96
Inputs
Results
Decimal odds1.210
  • The fraction shown is the closest simple fraction to the odds rounded to 3 decimals, not an exact match.
American
-477
Fractional
13/62
Implied probability
82.67%
Polymarket
83¢
Profit
20.96
Total return
120.96

1.210 decimal, -477 American, 82.67% implied probability

American odds of -477 mean

you risk 477 to win 100

. In decimal notation that is 1.21, in fractional notation 13/62, and the implied probability is 82.67%. On a prediction market the same price is a 83¢ share.

What -477 pays

A 100 stake at -477 returns 120.96 in total: your 100 back plus 20.96 profit. To win exactly 100 you would stake 477.00. The table covers the stakes people actually use.

Payout by stake
StakeProfitTotal return
102.1012.10
255.2430.24
5010.4860.48
10020.96120.96
500104.82604.82
1,000209.641,209.64

Break-even and long-run results

The implied probability of -477 is 82.67%, and that number is also the break-even win rate: win more often than 82.67% 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.

Return on stake by long-run win rate
Win rateReturn on stake
50%-39.5%
55%-33.5%
60%-27.4%
65%-21.4%
83%0.4%

A price of -477 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 -477

If both sides of a two-way market were priced at -477, the implied probabilities would add up to 65.34% above 100%. That excess is the overround, or vig; as a share of stakes it is a 39.52% 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.

-477 on a betting exchange

Exchanges charge commission on net winnings, so the price you see is not the price you get. At 2% commission -477 is worth 1.205 decimal (-487 American); at 5% it drops to 1.199 (-502). Those are the bookmaker prices you would need to beat.

Effective odds on an exchange
CommissionEffective decimalEffective AmericanBreak-even
2%1.205-48782.96%
5%1.199-50283.39%

Same price in other formats

Same price in other formats

Nearby prices

Nearby prices

  • -487 · 1.21 · 83.0%
  • -482 · 1.21 · 82.8%
  • -479 · 1.21 · 82.7%
  • -478 · 1.21 · 82.7%
  • -476 · 1.21 · 82.6%
  • -475 · 1.21 · 82.6%
  • -472 · 1.21 · 82.5%
  • -467 · 1.21 · 82.4%

Frequently asked questions

What does -477 mean in betting?

-477 is an American price. Positive numbers show the profit on a 100 stake; negative numbers show the stake needed to win 100. At -477 the implied probability is 82.67% and a 100 stake returns 120.96.

What is -477 in decimal odds?

-477 converts to 1.210 in decimal odds (usually shown as 1.21). Decimal odds are the total return per unit staked, so multiply your stake by 1.210 to get the return.

What is -477 as a fraction?

-477 is 13/62 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 -477?

A 100 stake at -477 wins 20.96 in profit and returns 120.96 including the stake. To win exactly 100 you would stake 477.00.

What win rate do I need at -477?

The break-even win rate equals the implied probability, 82.67%. Winning more often than that at this price is profitable over the long run; winning less often loses money.