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Decimal & Fractional Odds & Probability Table

The following table shows the relationship between decimal and fractional odds as well as the corresponding probability. This probability is theoretical and does not necessarily correspond to the probability of a real life event actually happening - in reality the odds offered will be largely based on individual bookies opinions as well as the amount staked.

Fractional
Odds
?/1
Decimal
Odds
Decimal
Probability
Percentage
Probability
1/8
0.125/1
1.125
0.8888
88.88
2/15
0.133/1
1.133
0.8824
88.24
1/7
0.143/1
1.143
0.8725
87.25
2/13
0.154/1
1.154
0.8666
86.66
1/6
0.167/1
1.167
0.8571
85.71
2/11
0.182/1
1.182
0.8462
84.62
1/5
0.200/1
1.200
0.8333
83.33
2/9
0.222/1
1.222
0.8182
81.82
1/4
0.250/1
1.250
0.8000
80.00
2/7
0.286/1
1.286
0.7778
77.78
3/10
0.300/1
1.300
0.7692
76.92
1/3
0.333/1
1.333
0.7500
75.00
4/11
0.363/1
1.363
0.7333
73.33
2/5
0.400/1
1.400
0.7143
71.43
4/9
0.444/1
1.444
0.6923
69.23
1/2
0.500/1
1.500
0.6667
66.67
8/15
0.533/1
1.533
0.6522
65.22
4/7
0.571/1
1.571
0.6364
63.64
8/13
0.615/1
1.615
0.6190
61.90
4/6
0.667/1
1.667
0.6000
60.00
8/11
0.727/1
1.727
0.5789
57.89
4/5
0.800/1
1.800
0.5555
55.55
5/6
0.833/1
1.833
0.5455
54.55
10/11
0.909/1
1.909
0.5238
52.38
1/1 (Evens)
1.000/1
2.000
0.5000
50.00
11/10
1.100/1
2.100
0.4762
47.62
6/5
1.200/1
2.200
0.4545
45.45
5/4
1.250/1
2.250
0.4444
44.44
11/8
1.375/1
2.375
0.4211
42.11
6/4
1.500/1
2.500
0.4000
40.00
8/5
1.600/1
2.600
0.3846
38.46
13/8
1.625/1
2.625
0.3810
38.10
7/4
1.750/1
2.750
0.3636
36.36
9/5
1.800/1
2.800
0.3571
35.71
15/8
1.875/1
2.875
0.3478
34.78
2/1
2.000/1
3.000
0.3334
33.34
11/5
2.200/1
3.200
0.3125
31.25
9/4
2.250/1
3.250
0.3077
30.77
12/5
2.400/1
3.400
0.2941
29.41
5/2
2.500/1
3.500
0.2857
28.57
13/5
2.600/1
3.600
0.2778
27.78
11/4
2.750/1
3.750
0.2667
26.67
14/5
2.800/1
3.800
0.2632
26.32
3/1
3.000/1
4.000
0.2500
25.00
10/3
3.333/1
4.333
0.2308
23.08
7/2
3.500/1
4.500
0.2222
22.22
18/5
3.600/1
4.600
0.2174
21.74
4/1
4.000/1
5.000
0.2000
20.00
9/2
4.500/1
5.500
0.1818
18.18
5/1
5.000/1
6.000
0.1667
16.67
11/2
5.500/1
6.500
0.1538
15.38
6/1
6.000/1
7.000
0.1429
14.29
13/2
6.500/1
7.500
0.1334
13.34
7/1
7.000/1
8.000
0.1250
12.50
15/2
7.500/1
8.500
0.1176
11.76
8/1
8.000/1
9.000
0.1111
11.11
17/2
8.500/1
9.500
0.1053
10.53
9/1
9.000/1
10.00
0.1000
10.00
10/1
10.00/1
11.00
0.0909
9.09
12/1
12.00/1
13.00
0.0769
7.69