You don’t have to bet to find odds useful. They’re the market’s live opinion of a football match: who’s expected to win, how close it is, and whether goals are likely. This guide explains what odds are, how the three formats compare, and how to turn any price into a percentage.
Table of Contents
- Odds answer two questions: how likely is it, and what does it pay?
- Decimal (2.50), fractional (6/4) and American (+150) are three ways of writing the same price.
- Lower odds mean more likely and a smaller payout. Higher odds mean less likely and a bigger payout.
- Every price can be converted into an implied probability.
- Bookmakers set their prices slightly below fair value. That margin is how they make money.
- Odds move with team news, money and, during a game, every goal.
Odds are an opinion with a price tag
Before a match, bookmakers estimate how likely each outcome is, using form, injuries, home advantage, head-to-head records and their own models. Then they turn those chances into prices and adjust them as people bet.
Take a team the market rates at 50% to win. The “fair” price would be 2.00, meaning you double your stake. The price you’re actually offered will be a bit lower, perhaps 1.91. That gap is the bookmaker’s margin, also called the overround, vig or juice.
The same bet in three formats
Here is one example price shown three ways: the away side at 2.50 / 6/4 / +150, with $10 staked.
| Format | Looks like | How to read it | $10 stake returns |
|---|---|---|---|
| Decimal | 2.50 | Total back per 1 staked, stake included | $25 |
| Fractional | 6/4 | Profit / stake: win 6 for every 4 staked | $25 |
| American | +150 | Profit on a 100 stake | $25 |
Different notation, identical payout. Pick the format you find easiest. Most betting sites let you switch in their settings.
Decimal: the easiest format
Multiply your stake by the price and you have everything that comes back.
2.00 is the dividing line. Prices below it are favourites, and prices above it are underdogs. More in our decimal odds guide.
Fractional: the traditional British format
The first number is what you win, and the second is what you stake. At 5/1 you win 5 for every 1 staked, plus your stake back. At 1/3 you have to stake 3 to win 1.
- Odds-against (first number bigger, like 7/2): the outcome is thought less likely than not.
- Odds-on (first number smaller, like 2/5): the outcome is thought more likely than not.
- Evens (1/1): you double your money.
More in our fractional odds guide.
American: plus and minus
A plus number is the profit on a 100 stake: +300 wins 300. A minus number is what you must stake to win 100: −160 means staking 160 to win 100.
| American | Decimal | Fractional | Who it is |
|---|---|---|---|
| −300 | 1.33 | 1/3 | Heavy favourite |
| −125 | 1.80 | 4/5 | Slight favourite |
| +100 | 2.00 | 1/1 | Even money |
| +175 | 2.75 | 7/4 | Outsider |
| +600 | 7.00 | 6/1 | Long shot |
More in our moneyline guide.
From odds to percentages
This is where odds start to tell you something about the match itself. Every price can be turned into the probability it implies:
Decimal: 1 ÷ odds (2.50 → 40%)
Fractional a/b: b ÷ (a + b) (6/4 → 4 ÷ 10 = 40%)
American +: 100 ÷ (odds + 100) (+150 → 40%)
American −: odds ÷ (odds + 100) (−150 → 60%)
So the next time a match shows the home side at 1.60, you know the market makes them about a 62% chance. Our odds to probability guide goes deeper.
The margin hidden in every match
Convert all three match-result prices and add them up, and you’ll get more than 100%:
| Outcome | Price | Implied |
|---|---|---|
| Home | 2.25 | 44.4% |
| Draw | 3.30 | 30.3% |
| Away | 3.40 | 29.4% |
| Total | 104.1% |
The extra 4.1% is the bookmaker’s cut. On the biggest leagues it’s usually small. On lower divisions, player markets and long-term bets it can be 10% or more. Over many bets, this margin is why most bettors end up behind.
Why odds move
- Team news: a key absence makes that team’s price drift (get bigger).
- Money: heavy backing makes a price shorten (get smaller).
- In-play events: goals, red cards, injuries and the clock all change the prices minute by minute.
If you follow a game on LiveScores24x7, you’ll notice that the biggest price moves usually line up with what’s happening on the pitch.
Before you use odds to bet
Odds are useful information, but they don’t predict anything with certainty. Favourites lose all the time. If you bet, decide on a budget beforehand, never chase losses, and check our safer gambling page.
FAQ
QWhat do odds mean in one sentence?
QWhich format should a beginner use?
QDo different formats ever pay differently?
QWhy do favourites sometimes pay so little?
QAre the odds a prediction?
