Odds explained · odds-on price
−300 odds: payout and meaning
A minus sign means an odds-on price, the kind usually offered on the favorite. −300 means you have to stake $300.00 to win $100 in profit; a $100 bet wins $33.33 and returns $133.33 including your stake.
−300 payout chart
| Stake | Profit if it wins | Total payout |
|---|---|---|
| $10 | $3.33 | $13.33 |
| $20 | $6.67 | $26.67 |
| $25 | $8.33 | $33.33 |
| $50 | $16.67 | $66.67 |
| $100 | $33.33 | $133.33 |
| $200 | $66.67 | $266.67 |
| $500 | $166.67 | $666.67 |
| $1,000 | $333.33 | $1,333.33 |
Payout = stake + profit. A losing bet loses the stake; a push (tie, where offered) returns it. In pounds: £100 wins £33.33. Any stake: bet calculator.
How much to bet to win a set amount at −300
| To win (profit) | Stake needed |
|---|---|
| $10 | $30.00 |
| $50 | $150.00 |
| $100 | $300.00 |
| $500 | $1,500.00 |
Break-even win rate at −300
The implied probability of −300 is about 75.00% (1 ÷ the exact decimal odds, shown rounded). That is the break-even win rate: if you bet this price many times on win-or-lose bets, you need to win more often than that to come out ahead. Whether a −300 bet is good value depends only on whether your honest estimate of the chance beats that number — the EV calculator does the comparison.
−300 in a parlay
Two −300 legs parlayed combine to decimal odds of ≈ 1.78 (−129, rounded): a $100 two-leg parlay pays $177.78 if both win. Three legs: decimal ≈ 2.37 (+137, rounded), paying $237.04 on $100. For independent selections from different events, those prices imply a break-even chance of about 42.19% for all three winning — an implied figure that includes each price’s margin, not a forecast; bookmakers may refuse or reprice related selections. Payouts use the exact, unrounded combined odds. Build your own with the parlay calculator.
Compare nearby odds
| Odds | Fractional | Decimal | Implied probability | $100 wins |
|---|---|---|---|---|
| −500 | 1/5 | 1.20 | 83.33% | $20.00 |
| −400 | 1/4 | 1.25 | 80.00% | $25.00 |
| −300 | 1/3 | 1.33 | 75.00% | $33.33 |
| −250 | 2/5 | 1.40 | 71.43% | $40.00 |
| −200 | 1/2 | 1.50 | 66.67% | $50.00 |
Full betting odds chart → · How betting odds work · 18+ — odds describe a price, not a prediction or a recommendation to bet.