How to use the odds converter
Type a price into whichever box matches what you have. You don't need to press anything: the other six boxes fill in straight away. Fractional odds can be typed as 5/2, 5-2 or "evens". American odds need their sign for short prices (-150); a plus sign is optional for long ones. If a box turns red, the price can't be read in that format, for example a decimal price below 1.01 or an American price between -100 and +100.
The seven formats explained
Decimal odds
Used across Africa, Europe and Australia, and by most betting sites. The number is your total return for each 1 staked, stake included. 2.50 returns 2.50 for every 1 staked: 1.50 profit plus your stake back.
Fractional odds
The traditional UK format. It shows profit against stake: 5/2 wins 5 for every 2 staked. To turn it into decimal odds, divide and add one: 5 ÷ 2 + 1 = 3.50. "Evens" (1/1) is 2.00, and "odds-on" prices such as 1/2 pay less than the stake.
American (moneyline) odds
Built around 100. A plus price is the profit on a 100 stake (+250 wins 250, which is 3.50 in decimal). A minus price is what you must stake to win 100 (-200 means stake 200 to win 100, which is 1.50). Favourites are minus, outsiders plus, and evens is +100.
Implied probability
Not an odds format a bookmaker prints, but the most useful one to know: the chance the price suggests. It's 100 divided by the decimal odds, so 2.50 implies 40%. Remember it still contains the bookmaker's margin; our odds checker strips that out.
Hong Kong odds
Decimal odds without the stake: profit per 1 staked. 2.50 in decimal is 1.50 in Hong Kong odds.
Malay odds
Common in Asian handicap markets. A positive number (up to 1.00) is the profit per 1 staked; a negative number is how much you stake to win 1. 0.50 is 1.50 in decimal; -0.50 means stake 0.50 to win 1, which is 3.00 in decimal.
Indonesian odds
Like American odds divided by 100. +1.50 wins 1.50 per 1 staked (2.50 decimal); -2.00 means stake 2 to win 1 (1.50 decimal).
Conversion table for common prices
| Fractional | Decimal | American | Implied chance |
|---|---|---|---|
| 1/10 | 1.10 | -1000 | 90.9% |
| 1/5 | 1.20 | -500 | 83.3% |
| 1/4 | 1.25 | -400 | 80.0% |
| 1/3 | 1.33 | -300 | 75.0% |
| 2/5 | 1.40 | -250 | 71.4% |
| 1/2 | 1.50 | -200 | 66.7% |
| 8/13 | 1.62 | -162 | 61.9% |
| 4/6 | 1.67 | -150 | 60.0% |
| 4/5 | 1.80 | -125 | 55.6% |
| 10/11 | 1.91 | -110 | 52.4% |
| 1/1 (evens) | 2.00 | +100 | 50.0% |
| 6/5 | 2.20 | +120 | 45.5% |
| 6/4 | 2.50 | +150 | 40.0% |
| 7/4 | 2.75 | +175 | 36.4% |
| 2/1 | 3.00 | +200 | 33.3% |
| 5/2 | 3.50 | +250 | 28.6% |
| 3/1 | 4.00 | +300 | 25.0% |
| 4/1 | 5.00 | +400 | 20.0% |
| 5/1 | 6.00 | +500 | 16.7% |
| 10/1 | 11.00 | +1000 | 9.1% |
American prices on short odds are rounded to the nearest whole number, as bookmakers do.
How the converter rounds
Every format is converted through decimal odds. Fractional odds are shown as the nearest simple fraction with a bottom number up to 100, preferring the simple fractions bookmakers use, so 1.91 appears as 10/11 and 1.33 as 1/3. Implied chances are shown to two decimal places. A difference in the last decimal is rounding, not a different price.
Which format should you use?
Use whichever your bookmaker shows, and switch here when you need to compare. Decimal odds are the easiest for maths, which is why every tool on this site and every tip on TodaysPrediction uses them. The format that tells you the most is implied probability: once you think of 1.80 as "about 56%", you can judge whether a price is too short for the chance you expect.
Why two prices can look different but be the same
10/11, 1.91, -110, 52.4%, 0.91 (Hong Kong), 0.909 (Malay) and -1.10 (Indonesian) are all the same price written seven ways. When a tip, a bookmaker and a friend each quote odds differently, convert them all into one format before deciding which is better.