Odds explained · odds-against price
+120 odds: payout and meaning
A plus sign means an odds-against price, the kind usually offered on the underdog. +120 means a $100 bet wins $120.00 in profit and returns $220.00 including your stake.
+120 payout chart
| Stake | Profit if it wins | Total payout |
|---|---|---|
| $10 | $12.00 | $22.00 |
| $20 | $24.00 | $44.00 |
| $25 | $30.00 | $55.00 |
| $50 | $60.00 | $110.00 |
| $100 | $120.00 | $220.00 |
| $200 | $240.00 | $440.00 |
| $500 | $600.00 | $1,100.00 |
| $1,000 | $1,200.00 | $2,200.00 |
Payout = stake + profit. A losing bet loses the stake; a push (tie, where offered) returns it. In pounds: £100 wins £120.00. Any stake: bet calculator.
How much to bet to win a set amount at +120
| To win (profit) | Stake needed |
|---|---|
| $10 | $8.33 |
| $50 | $41.67 |
| $100 | $83.33 |
| $500 | $416.67 |
Break-even win rate at +120
The implied probability of +120 is about 45.45% (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 +120 bet is good value depends only on whether your honest estimate of the chance beats that number — the EV calculator does the comparison.
+120 in a parlay
Two +120 legs parlayed combine to decimal odds of 4.84 (+384): a $100 two-leg parlay pays $484.00 if both win. Three legs: decimal ≈ 10.65 (+965, rounded), paying $1,064.80 on $100. For independent selections from different events, those prices imply a break-even chance of about 9.39% 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 |
|---|---|---|---|---|
| +100 | 1/1 | 2.00 | 50.00% | $100.00 |
| +110 | 11/10 | 2.10 | 47.62% | $110.00 |
| +120 | 6/5 | 2.20 | 45.45% | $120.00 |
| +125 | 5/4 | 2.25 | 44.44% | $125.00 |
| +130 | 13/10 | 2.30 | 43.48% | $130.00 |
Full betting odds chart → · How betting odds work · 18+ — odds describe a price, not a prediction or a recommendation to bet.