UK  EU  US  UK  EU  USA  UK  EU  USA  
1/5  1.20  500  10/11  1.91  110  95/40  3.38  +237.50  
2/9  1.22  450  20/21  1.95  105  12/5  3.40  +240  
1/4  1.25  400  1/1  2.00  100  5/2  3.50  +250  
2/7  1.28  350  21/20  2.05  +105  13/5  3.60  +260  
3/10  1.30  333.30  11/10  2.10  +110  11/4  3.75  +275  
1/3  1.33  300  6/5  2.20  +120  14/5  3.80  +280  
7/20  1.35  285.70  5/4  2.25  +125  3/1  4.00  +300  
4/11  1.36  275  13/10  2.30  +130  16/5  4.20  +320  
2/5  1.40  250  11/8  2.38  +137.50  10/3  4.33  +333.30  
4/9  1.44  225  7/5  2.40  +140  7/2  4.50  +350  
9/20  1.45  222.20  6/4  2.50  +150  18/5  4.60  +360  
40/85  1.47  212.50  8/5  2.60  +160  4/1  5.00  +400  
1/2  1.50  200  13/8  2.63  +162.50  9/2  5.50  +450  
8/15  1.53  187.50  17/10  2.70  +170  5/1  6.00  +500  
4/7  1.57  175  7/4  2.75  +175  11/2  6.50  +550  
3/5  1.60  166.70  9/5  2.80  +180  6/1  7.00  +600  
8/13  1.62  162.50  15/8  2.88  +187.50  13/2  7.50  +650  
5/8  1.63  160  19/10  2.90  +190  7/1  8.00  +700  
4/6  1.66  150  2/1  3.00  +200  15/2  8.50  +750  
7/10  1.70  142.90  21/10  3.10  +210  8/1  9.00  +800  
8/11  1.72  137.50  85/40  3.13  +212.50  17/2  9.50  +850  
4/5  1.80  125  11/5  3.20  +220  9/1  10.00  +900  
5/6  1.83  120  9/4  3.25  +225  10/1  11.00  +1000  
9/10  1.90  111.10  23/10  3.30  +230  50/1  51.00  +5000 
Odds Converter  supports EU (decimal), UK (fractional) and US (moneyline) formats
Enter the odds in any format and click Convert

US Odds: Odds in US format (a negative number expresses the dollar amount that would need to be wagered in order to win $100, while a positive number expresses the dollar amount that would be won from a $100 wager) Decimal Odds: Odds in decimal format (expresses the amount that would be returned from a $1 bet *inclusive* of original stake) Fractional Odds: Odds in fractional format (expresses the fraction of a dollar that would be won from a $1 bet)  
Hong Kong odds are like fractional format, except they’re expressed in decimals. To convert it in decimal format just add 1 (0.50 is 1/2 in fractions and 1.50 in decimals). Indonesian odds are like US odds. When negative, they show how big wager is needed for a profit of 1 and when positive, they show the profit from a wager of 1. Malaysian odds are just opposite from US and Indonesian format. For example, fractional 3/2, decimal 2.50, US +150, Indonesian +1.50 is Malay 0.67. And fractional 1/2, decimal 1.50, US 200, Indonesian 2.00 is Malay +0.50. 
How to use the odds calculator:
This odds conversion tool converts between US, decimal, fractional, Hong Kong, Indonesian, Malay odds, and implied probability. Enter any one of the seven and the other six will be computed and displayed.
British (Fractions) odds
British odds are represented by a fraction, so are popular as fractional odds. Unlike decimal odds, fractional odds show only possible net profit from a bet.
For example, we have odds 1/5. With $100 bet we get the following: 100 X 1/5 = $200. These are $200 net profit from the bet. Of course, the bookmaker will pay the initial bet and profit.
It should be noted that the British are odds ratio amounts risked by the player and the bookmaker. The numerator of the fraction refers to the bookmakers, the denominator for the player.
Example:2 / 5 (if you split your bet of 5 parts, net income will be 2 of them):
Profit = Stake * (Odds + 1) $100 x (1/2 +1) = $150
Net profit = Stake * Odds $100 x 1/2 = $50
European (Decimals) Odds
European odds are the most popular. They represent decimal fractions. That is why they are popular with the simple name  decimal odds. Another name is  continental odds.
Multiplied by the amount you stake, such factors indicate the total amount of money that will gather any profit. This means that this amount includes both profit and predefined you money.
For example, you played a game of odds. 1.50 with $100 . We get 1.50 X 100 = $150. These are $100 final amount you will get when your real profit from this bet is $50.
We take a sample odds 1.50:
Profit = Stake * Odds $100 x 1.50 = $150
Net profit = Stake * (Odds  1) $100 x (1.50  1) = $50
American odds  US (moneyline)
U.S. odds are not preferred for most bettors because they are seemingly very complicated and unclear. In fact is not true. U.S. format odds represents a minimum 3digit number that can be both a positive and a negative sign in front of it. For example, it may be 150, 200, +180, +300, and so on. This is because these factors are based on the sum of 100. If the ratio is negative, it shows what amount must be wagered to win 100. I.e. if you have odds. 200 Should bet 200 to win 100, which corresponds to 1.50 decimal odds. If the odds is positive, it shows how much you could win if you bet 100. For example, if you have odds. +200 Means that when you bet 100, you'll earn 200 or is the decimal odds 3.00.
Examples with 200 и +275:
Profit = Stake * (1 + 100/ Odds) = $100 x (1 + 100/200) = $150
Net profit = Stake * 100/ Odds = $100 x 100/200 = $50
Profit = Stake * (1 + Odds /100) = $100 x (1 + 275/100) = $375
Net profit = Stake * Odds /100 = $100 x 275/100 = $275
Odds Conversion Chart