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繁體中文How Betting Odds Work
Odds tell you two things: how much a winning bet returns, and the implied chance of that outcome. The same price can be shown in three formats — decimal, fractional and American. This guide explains all three with hypothetical examples.
- A 2.
- For decimal odds, divide 1 by the price.
- +150 means 150 units of profit on a 100-unit stake.
Decimal odds
Decimal odds show the total return per unit staked, including your stake back. Multiply your stake by the decimal price to get the full payout.
Fractional odds
Fractional odds (common in the UK) show profit relative to stake. 3/1 means three units of profit for every one staked, plus your stake back.
American odds
American odds use a plus or minus sign. A positive number (+150) is the profit on a 100-unit stake; a negative number (−150) is the stake needed to win 100 units.
Odds and implied probability
Any price implies a probability. For decimal odds, implied probability = 1 ÷ decimal price.
Putting it together
Once you can read a price, the rest follows: combine selections with an accumulator, balance a mismatch with handicap betting, or explore a sport in depth via football and basketball.
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🔞 18+ only. Examples are hypothetical and for explanation only — they are not betting advice or real odds. Please gamble responsibly.
FAQ
A 2.50 decimal price returns 2.5 times your stake in total, including the stake. A 10-unit bet returns 25 units, of which 15 is profit.
For decimal odds, divide 1 by the price. For example 1 ÷ 2.50 = 0.40, an implied probability of about 40%.
+150 means 150 units of profit on a 100-unit stake. −150 means you stake 150 units to win 100. Negative prices indicate favourites.
Last updated: 2026-06-15