Betting odds calculator
A $100 bet at -110 wins $90.91 and pays back $190.91; at +150 it wins $150.00 and pays back $250.00. Enter any odds below to see your payout.
Checked 2026-11-07. Source: formulas below.
19+ in most of Canada (18+ in Alberta, Manitoba and Quebec), 21+ in most US states. A calculator shows what a bet pays, not how likely it is to win. Free help: 1-800-GAMBLER (US), ConnexOntario 1-866-531-2600 (Ontario), 211 (Alberta). More help.
How betting odds pay
- American plus odds (+150):
profit = stake × odds ÷ 100 - American minus odds (-110):
profit = stake × 100 ÷ |odds| - Decimal odds (2.50):
payout = stake × odds - Fractional odds (6/4):
profit = stake × 6 ÷ 4
Sportsbook and bookmaker odds
US sportsbooks quote American (moneyline) odds, UK and Irish bookmakers mostly fractional odds, and exchanges and the rest of the world decimal odds. They are the same prices written three ways, for any sporting event: +150, 2.50 and 6/4 all win $150 on a $100 stake. The calculator accepts any of them and shows your winnings (profit) and the total payout (profit plus stake).
For racing, a fixed-odds win bet works the same way. Each way bets pay the place part at a fraction of the odds: see the each way calculator.
Moneyline payout table
| Odds | Decimal | $100 wins | $100 pays back | Bet to win $100 | Implied |
|---|---|---|---|---|---|
| −500 | 1.20 | $20.00 | $120.00 | $500.00 | 83.3% |
| −300 | 1.33 | $33.33 | $133.33 | $300.00 | 75.0% |
| −200 | 1.50 | $50.00 | $150.00 | $200.00 | 66.7% |
| −150 | 1.67 | $66.67 | $166.67 | $150.00 | 60.0% |
| −110 | 1.91 | $90.91 | $190.91 | $110.00 | 52.4% |
| +100 | 2.00 | $100.00 | $200.00 | $100.00 | 50.0% |
| +120 | 2.20 | $120.00 | $220.00 | $83.33 | 45.5% |
| +150 | 2.50 | $150.00 | $250.00 | $66.67 | 40.0% |
| +200 | 3.00 | $200.00 | $300.00 | $50.00 | 33.3% |
| +300 | 4.00 | $300.00 | $400.00 | $33.33 | 25.0% |
| +500 | 6.00 | $500.00 | $600.00 | $20.00 | 16.7% |
| +1000 | 11.00 | $1,000.00 | $1,100.00 | $10.00 | 9.1% |
For several legs on one ticket use the parlay calculator; to switch formats only, the odds converter.
Questions
How do I calculate a payout from American odds?
Plus odds: profit = stake × odds ÷ 100, so $100 at +150 wins $150.00. Minus odds: profit = stake × 100 ÷ |odds|, so $110 at -110 wins $100.00. The payout adds your stake back.
What does -110 mean?
You stake $110 to win $100. A $100 bet at -110 wins $90.91 and returns $190.91.
How much do I need to bet to win $100?
At plus odds, less than $100: $66.67 at +150. At minus odds, more: $110.00 at -110 and $200.00 at -200.
How do I work out winnings from bookies' fractional odds?
Divide the stake by the second number and multiply by the first: £10 at 6/4 wins 10 ÷ 4 × 6 = £15, and pays back £25 with the stake. Evens (1/1) doubles your money.
Does this work for horse racing odds?
Yes, for a win bet at fixed odds. For each way bets, where the place part pays a fraction of the odds, use the each way calculator; tote and pari-mutuel prices are only known after the race.
What is implied probability?
The win rate at which a bet breaks even: 1 ÷ decimal odds. -110 implies 52.4%, so a -110 bettor needs to win more than 52.4% of bets to profit.