United Kingdom & Ireland
Fractional
Profit over stake: 6/4 wins 6 for every 4.
Odds converter
Type a price in any format. See it in every other one, with the chance it implies and what your stake pays.
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Try:
01 · What the odds say
Out of 100 times, this wins about 40.
Odds are a price and a guess at the same time. Here is the guess, drawn as 100 matches.
40.0% implied chance
02 · One price, four languages
Same bet, different words.
Every region writes odds its own way. This is your price as a bettor there would see it.
Europe, Australia, most of the world
Decimal
The whole return per 1 staked, stake included.
United States & Canada
American (moneyline)
+ is what 100 wins. − is what you stake to win 100.
Asia
Hong Kong · Malay · Indonesian
HK Malay Indo
Profit per 1; Malay and Indonesian add a sign for favourites.
03 · The bookmaker's cut
Add the other side. See what you really pay.
The chances of every outcome in a market add up to more than 100%. The extra is the margin: the price of the bet. A lower margin means better odds for you.
bookmaker's chancefair chance · fair odds
04 · Cheat sheet
The prices you'll actually see.
Bookmakers quote from a fixed ladder of fractions. Tap one to load it above.
05 · Quick answers
Odds, explained in one line each.
What does 6/4 mean?
You win 6 for every 4 you stake and get your stake back, so 4 returns 10. In decimal that is 2.50, in American +150.
How do I convert fractional odds to decimal?
Divide the first number by the second and add 1. 5/2 is 2.5 + 1 = 3.50; 4/6 is 0.67 + 1 = 1.67.
How do I convert American odds to decimal?
Plus odds: divide by 100 and add 1, so +250 is 3.50. Minus odds: divide 100 by the number without its sign and add 1, so -200 is 1.50.
Why do decimal odds include the stake?
Decimal odds show the whole return per 1 staked: 2.50 means 1 brings back 2.50 (your 1 plus 1.50 profit). Fractions and American odds show only the profit.
What does a minus mean in American odds?
A minus marks the favourite: -200 means you stake 200 to win 100. A plus marks the underdog: +150 means 100 wins 150.
What does -110 mean?
You stake 110 to win 100. That is 1.91 in decimal, 10/11 as a fraction and an implied chance of 52.4%. It is the usual price on both sides of a US point spread or total.
What are evens?
Odds of 1/1: you win what you stake. In decimal 2.00, in American +100, an implied chance of 50%.
How do I work out the implied chance?
Divide 100 by the decimal odds: 2.50 gives 40%. From a fraction, divide the second number by the sum of both: 6/4 gives 4 ÷ 10 = 40%.
Is the implied chance the real chance?
No. It includes the bookmaker's margin, so it is always a little higher than a fair chance. The bookmaker's cut tool on this page shows how much.
What is the bookmaker's margin?
Add the implied chances of every outcome in a market; whatever is over 100% is the margin. At 1.90 on both sides of a two-way market: 52.6% + 52.6% = 105.3%, a margin of about 5.3%.
Which odds format is best?
None pays more: they are the same price written differently. Decimal is the easiest to compare and multiply. Most bookmakers let you switch format in your account settings.
What are Hong Kong, Malay and Indonesian odds?
Asian formats that show the profit per 1 staked. Hong Kong is decimal minus 1 (2.50 is 1.50). Malay is positive for favourites and negative for underdogs (2.50 is -0.67). Indonesian is American divided by 100 (1.50 is -2.00).
Why does 1.91 show as 10/11?
Bookmakers quote fractions from a fixed ladder. When the price is very close to one of them, the converter shows that fraction; otherwise the exact one over 100.
For information only. Your bookmaker's own odds and rules apply.