The following table is a list of all the likely odds you will come across and the corresponding percentage figure that you will need. Simply, list which odds you are using, find the corresponding percentage figure, add the percentage figure up. If the total is less than 100 % you have an arbitrage (arb). This understanding of this table will be essential for you in succeeding in this business.
English
European
USA
Percentage
80/1
81.0
+8,000
1.24
66/1
67.0
+6,600
1.49
50/1
51.0
+5,000
1.96
33/1
34.0
+3,300
2.94
25/1
26.0
+2,500
3.85
20/1
21.0
+2,000
4.76
18/1
19.0
+1,800
5.26
16/1
17.0
+1,600
5.88
14/1
15.0
+1,400
6.67
12/1
13.0
+1,200
7.69
11/1
12.0
+1,100
8.33
10/1
11.0
+1,000
9.09
9/1
10.0
+900
10.00
17/2
9.5
+850
10.53
8/1
9.0
+800
11.11
15/2
8.5
+750
11.76
7/1
8.0
+700
12.50
13/2
7.5
+650
13.33
6/1
7.0
+600
14.29
11/2
6.5
+550
15.38
5/1
6.0
+500
16.67
5.8
+480
17.24
5.6
+460
17.86
9/2
5.5
+450
18.18
5.3
+430
18.87
4/1
5.0
+400
20.00
4.7
+370
21.28
7/2
4.5
+350
22.22
4.4
+340
22.73
100/30
4.33
+333
23.08
4.2
+320
23.81
3/1
4.0
+300
25.00
14/5
3.8
+280
26.32
11/4
3.75
+275
26.67
13/5
3.6
+260
27.78
5/2
3.5
+250
28.57
12/5
3.4
+240
29.41
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3.3
+230
30.30
9/4
3.25
+225
30.77
11/5
3.2
+220
31.25
85/40
3.12
+212
32.05
21/10
3.1
+210
32.26
2/1
3.0
+200
33.33
2.9
+190
34.48
15/8
2.87
+187
34.78
9/5
2.8
+180
35.71
7/4
2.75
+175
36.36
2.7
+170
37.04
13/8
2.62
+162
38.10
8/5
2.6
+160
38.46
6/4
2.5
+150
40.00
2.46
+146
40.65
7/5
2.4
+140
41.67
11/8
2.37
+137
42.11
2.35
+135
42.55
2.3
+130
43.48
5/4
2.25
+125
44.44
6/5
2.2
+120
45.45
2.15
+115
46.51
11/10
2.1
+110
47.62
2.05
+105
48.78
Evens
2.0
+100
50.00
1.95
51.28
10/11
1.9
-110
52.38
1.85
54.05
5/6
1.83
-120
54.55
4/5
1.8
-125
55.56
8/11
1.73
-137
57.89
4/6
1.67
-150
60.00
1.65
60.61
8/13
1.62
-161
61.90
1.6
62.50
4/7
1.57
-175
63.64
1.55
64.52
8/15
1.53
-190
65.22
1/2
1.50
-200
66.67
1.45
68.97
4/9
1.44
-225
69.23
2/5
1.40
-250
71.43
4/11
1.36
-275
73.33
1/3
1.33
-300
75.00
3/10
1.30
-330
76.93
2/7
1.28
-350
77.78
1/4
1.25
-400
80.00
2/9
1.22
-450
81.82
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1/5
1.20
-500
83.33
2/11
1.18
-550
84.62
1/6
1.16
-600
85.71
2/13
1.15
-650
86.67
1/7
1.14
-700
87.50
2/15
1.13
-750
88.24
1/8
1.12
-800
88.89
1/9
1.11
-900
90.00
1/10
1.10
-1000
90.91
1/11
1.09
-1100
91.67
1/12
1.08
-1200
92.31
1/14
1.07
-1400
93.33
1/16
1.06
-1600
94.12
1/20
1.05
-2000
95.24
Here are some examples that use the table above: Soccer match getting the best odds from all the bookmakers. (Odds are in fractional format).
Fractional Percent
Stake
Stake
Odds
Calculation
Team A
Evens
50.00%
£100 * 50.00%
£50.00
Team B
9/4
30.77%
£100 * 30.77%
£30.77
Draw
11/2
15.38%
£100 * 15.38%
£15.38
Total
96.15%
£96.15
Total percentage of 96.15%, therefore we have an arb. If you want to stake £96.15
you will have £100 returned. A profit of about 3.85%.
Tennis match best odds from all the bookmakers. (Odds are in European format).
Decimal
Percent
Stake
Stake
Odds
Calculation
Player A
1.8
55.56%
£100 * 55.56%
£55.56
Player B
2.1
47.62%
£100 * 47.62%
£47.62
Total
103.18%
£103.18
Total percentage of 103.18%, therefore we don’t have an arb to bet on as the percentage is over 100%.
Often you will find that the types of odds format are mixed as the different bookmakers may only offer prices in their chosen format. Not a problem, just do the relevant conversion.
Golf 2-ball best odds from all the bookmakers. (Odds are in European and British format).
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Mixed
Percent
Stake
Stake
Odds
Calculation
Player A
1.8
55.56%
£100 * 55.56%
£55.56
Player B
9/4
30.77%
£100 * 30.77%
£30.77
Total
86.33%
£86.33
Player A to win
1.8
Player B to win
9/4
Therefore check the chart:
Percentage for player A to win is 55.56%
Percentage for team B to win is 30.77%
Total percentage of 86.33%, therefore we have a very lucrative arb to bet on.
If you want to bet a total of £500 then your stakes are:
£277.80 on player A (55.56% of £500).
£153.85 on player B (30.77% of £500).
Total stakes £431.65, total returned £500.
With the American style odds the way of finding an arbitrage is even easier. If the two numbers added together are greater than zero then you have an arbitrage bet.
American Percent
Stake
Stake
Odds
Calculation
Player A
-110
52.38%
£100 * 52.38%
£52.38
Player B
+137
42.11%
£100 * 42.11%
£42.11
Total
+27
94.49%
£94.49
Golf 2-ball best odds from all the bookmakers. (Odds are in US format and European format).
Player A to win
-110 (1.9)
Player B to win
+137 (2.37)
Therefore check the chart:
Percentage for player A to win is 52.38%
Percentage for player B to win is 42.11%
Just from adding up the US format odds we find that we have an arb because the figure is greater than zero (-110 +137 = +27). The percentage arb is just over 5%.
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