Converting Odds

Knowing how to convert betting odds can be very helpful. In fact, if you don’t know how to convert betting odds into their respective implied probabilities, you’re not helping your chances of coming away as a long term winner in the competitive world of sports betting. Understanding the implied probability behind the odds on offer is key to assessing the potential value in a particular betting market. And it is just as important when assessing the value that exists with regards to specific odds on a particular outcome. If the implied probability is less than your own assessed probability of a particular outcome occurring, that outcome represents a value betting opportunity. If, however, you want to learn how to convert odds to implied probability and how to covert implied probability to various odds formats, please read on.
This article explains in detail how to convert the three most popular odds formats in the world – decimal, fractional and American – into their implied probabilities and how to convert an implied probability into either of these odds formats. Our Odds Conversion Calculator will also convert a probability into odds. Want to know what 70% probability is represented as “Decimal Odds”? Our odds conversion tool will show you. Simply enter the probability as a percentage and our odds conversion tool will do the rest.

How To Convert Odds – Step By Step

There are three basic steps to converting odds

1. Understand the odds format by answering the question: Are the odds you want to convert Decimal, Fractional or American?

2. Convert the odds to their implied probability.

3. Convert the implied probability to your preferred odds format.

For example, “Decimal Odds” of 3.00 has an implied probability of 33.3% which can then be converted to fractional odds of 2/1.

This article discusses this process of odds conversion in detail with the use of step by step real world examples. If you’re completely new to betting odds and implied probability, the video below presents a great introduction and overview.

 

Probability % Decimal Odds Fractional odds Moneyline Odds
99.0 1.01 1/100 -10000
98.0 1.02 1/50 -5000
97.1 1.03 1/33 -3333
96.2 1.04 1/25 -2500
95.2 1.05 1/20 -2000
94.3 1.06 3/50 -1667
93.5 1.07 7/100 -1429
92.6 1.08 2/25 -1250
91.7 1.09 9/100 -1111
90.9 1.10 1/10 -1000
90.1 1.11 11/100 -909
89.3 1.12 3/25 -833
88.5 1.13 13/100 -769
87.7 1.14 7/50 -714
87.0 1.15 3/20 -667
86.2 1.16 4/25 -625
85.5 1.17 17/100 -558
84.7 1.18 9/50 -556
84.0 1.19 19/100 -526
83.3 1.20 1/5 -500
82.6 1.21 21/100 -476
82.0 1.22 11/50 -455
81.3 1.23 23/100 -435
80.6 1.24 6/25 -417
80.0 1.25 1/4 -400
79.4 1.26 13/50 -385
78.7 1.27 27/100 -370
78.1 1.28 7/25 -357
77.5 1.29 29/100 -345
76.9 1.30 3/10 -33
76.3 1.31 31/100 -303
75.8 1.32 8/25 -313
74.6 1.33 17/50 -294
74.1 1.34 7/20 -286
73.5 1.35 9/25 -278
73.0 1.36 37/100 -270
72.5 1.37 19/50 -263
71.9 1.39 39/100 -256
71.4 1.40 2/5 -250
70.9 1.41 41/100 -244
70.4 1.42 21/50 -238
69.9 1.43 43/100 -233
69.4 1.44 11/25 -227
69.0 1.45 9/20 -222
68.5 1.46 23/50 -217
68.0 1.47 47/100 -213
67.6 1.48 12/25 -208
67.1 1.49 49/100 -204
66.7 1.50 1/2 -200
65.8 1.52 13/25 -192
64.9 1.54 27/50 -185
64.1 1.56 14/25 -179
63.3 1.58 29/50 -172
62.5 1.60 3/5 -167
61.7 1.62 31/50 -161
61.0 1.64 16/25 -156
60.2 1.66 33/50 -152
59.5 1.68 17/25 -147
58.8 1.70 7/10 -143
58.1 1.72 18/25 -139
57.5 1.74 37/50 -135
56.8 1.76 19/25 -132
56.2 1.78 39/50 -128
55.6 1.80 4/5 -125
54.9 1.82 41/50 -122
54.3 1.84 21/25 -119
53.8 1.86 43/50 -116
53.2 1.88 22/25 -114
52.6 1.90 9/10 -111
52.1 1.92 23/25 -109
51.5 1.94 47/50 -106
51.0 1.96 24/25 -104
50.5 1.98 49/50 -102
50.0 2.00 1/1 -100
49.5 2.02 51/50 102
49.0 2.04 26/25 104
48.5 2.06 53/50 106
48.1 2.08 27/25 108
47.6 2.10 11/10 110
46.5 2.15 23/20 115
45.5 2.20 6/5 120
44.4 2.25 5/4 125
43.5 2.30 13/10 130
42.6 2.35 27/20 135
41.7 2.40 14/10 140
40.8 2.45 29/20 145
40.0 2.50 3/2 150
38.5 2.60 8/5 160
37.0 2.70 17/10 170
35.7 2.80 9/5 180
34.5 2.90 19/10 190
33.3 3.00 2/1 200
31.3 3.20 11/5 220
29.4 3.40 12/5 240
27.8 3.60 13/5 260
26.3 3.80 14/4 280
25.0 4.00 3/1 300
23.8 4.20 16/5 320
22.7 4.40 17/5 340
21.7 4.60 18/5 360
20.8 4.80 19/5 380
20.0 5.00 4/1 400
19.2 5.20 21/5 420
18.5 5.40 22/5 440
17.9 5.60 23/5 460
17.2 5.80 24/5 480
16.7 6.00 5/1 500
16.1 6.20 26/5 520
15.6 6.40 27/5 540
15.2 6.60 28/5 560
14.7 6.80 29/5 580
14.3 7.00 6/1 600
13.3 7.50 13/2 650
12.5 8.00 7/1 700
11.1 9.00 8/1 800
10.0 10.00 9/1 900
9.1 11.00 10/1 1000
8.3 12.0 11/1 1100
7.7 13.0 12/1 1200
7.1 14.00 13/1 1300
6.7 15.00 14/1 1400
5.0 20.00 19/1 1900
3.3 30.00 29/1 2900
2.5 40.00 39/1 3900
2.0 50.00 49/1 4900
1.0 100.00 99/1 9900
0.7 150.00 149/1 14900
0.5 200.00 199/1 19900

 

Converting “Decimal Odds”

“Decimal Odds” are a simple reflection of the return you will receive for each single unit placed. For example, let’s say bookmaker Bethard offering odds of 1.65 for Manchester United to win. This means that for every 1.00 you bet on that particular outcome, you will receive a profit of 0.65 should Manchester United win.

To convert these odds to their respective implied probabilities we make a simple calculation.

 

Converting “Decimal Odds” to implied probability formula:

Implied probability = 1 / “Decimal Odds”

Let’s look at an example, in which Diego Costa to get a yellow card is odds 1.65.

 

Example: How to convert “Decimal Odds” to its implied probability

1 / 1.65 = 0.606 = 60.6%

Multiplied then by 100 to express as an implied probability percentage of 60.6%.

 

Converting Fractional Odds

Fractional odds are generally the most traditional form of expressing betting odds. They are a simple reflection of the return you will receive for a particular amount bet.

So for example, let’s say bookmakerLadbrokesis offering odds of 5/2 for a particular horse to win an upcoming race. The odds of 5/2 (expressed as “5 to 2”) means that for every 2 units that you bet, you will receive 5 back as profit. So if you bet €200 on that horse, you would have received €500 profit in return plus your original stake of €200.

 

Converting fractional odds into implied probability formula:

Implied probability = denominator / (denominator + numerator)

Let’s look at an example, in which Diego Costa to get a yellow card is odds 5/2.

 

Example: How to convert fractional odds to its implied probability

5 / 2 = 2 / (2 + 5) = 2 / 7 = 0.2857 = 28.57%

Multiplied then by 100 to express as a implied probability percentage of 28.57%

 

Converting Moneyline Odds

Moneyline odds, also known as ‘American odds’ are probably the most foreign odds format to those of us outside of North America. And at first they appear a little confusing. But it is helpful to understand what these odds represent especially when listening to Americans speaking about gambling odds in sports broadcasts or podcasts. So, let’s see how we can convert Moneyline odds into their respective implied probabilities.

There are two instances of Moneyline odds: ‘minus’ moneylines and ‘plus’ moneylines.

The first are‘minus’ moneylines. This is expressed as for example, -120. But what does this mean exactly? Well, let’s say bookmaker is offering odds of -120 for the Los Angeles Lakers to win a game. This is essentially saying that to win $100 you have to bet $120. In other words, if you place $120 on that outcome, you will receive a profit of $100.

The other instance are‘plus’ moneylines. This is expressed as for example +180. In this case, let’s say bookmakerWinner Sportshave offered odds of +180 for the New York Yankees to win a game. This simply means that if you bet $100, you will win $180.

So how do we convert the the ‘minus’ and the ‘plus’ moneyline odds into their implied probabilities? Let’s start out with the ‘minus’ moneyline conversion:

 

Converting ‘minus’ moneyline odds into implied probability formula:

Implied probability = ( – ( ‘minus’ moneyline odds ) ) / ( – ( ‘minus’ moneyline odds ) ) + 100

So let’s take an example, in whichTitanbetoffers the following bet: San Diego Chargers to win against New England Patriots at odds -120.

 

Example: How to convert ‘minus’ moneyline odds to its implied probability

(- (-120) / ( (- (-120) ) + 100) = 120 / 220 = 0.545 = 54.5%

Multiplied then by 100, we get the implied probability percentage of 54.5%.

Converting a ‘plus’ moneyline is a bit different. Calculating the implied probabilities on these look like this:

 

Converting ‘plus’ moneyline odds into implied probability formula:

Implied probability = 100 / ( ‘plus’ moneyline odds + 100 )

So let’s take an example, in which Mr. Green offers odds +180 for Los Angeles Lakers to beat Miami Heat.

 

Example: How to convert ‘plus’ moneyline odds to its implied probability

( 100 / 180 + 100 ) = 100 / 280 = 0.357 = 35.7%

Multiplied then by 100, we get the implied probability percentage of 35.7%.

Converting Odds
5 (100%) 2 betyg

Best Casinos for Sports Betting

Best Casinos for Sports Betting

  • Strålande nytt casino med ett fantastiskt tema!
  • Massor av spel, utmärkt live casino och VIP Program!
  • 14Red Spelen är pålitliga och testade
100% Upp till €1200
14Red Casino
Fungerar med:
Rykte - 99%
Spelupplevelse - 99%
Bonusar - 99%
Värde - 99%
Helhetsintryck - 99%
  • Utmärkt Nytt Casino
  • Fantastiskt VIP program
  • Suveränt Mobil Casino
100% Upp till SEK12000
goliath casino sweden
Fungerar med:
Rykte - 97%
Spelupplevelse - 98%
Bonusar - 99%
Värde - 98%
Helhetsintryck - 98%
  • Funnits sedan 1997
  • Utmärkt programvara
  • Flerspråkigt
100% Upp till €140
888 Casino Sweden
Fungerar med:
Rykte - 98%
Spelupplevelse - 96%
Bonusar - 96%
Värde - 98%
Helhetsintryck - 97%
  • 450 Free Spins utan insättningskrav!
  • Få 500 kronor i bonus!
  • Ett av Sveriges snabbast växande casinon
200% Upp till SEK500
iGame Online Casino
Fungerar med:
Rykte - 97%
Spelupplevelse - 97%
Bonusar - 95%
Värde - 96%
Helhetsintryck - 96%
  • Instant play
  • Mobile friendly
  • Live chat 24/7
150% Upp till SEK5000
Fungerar med:
Rykte - 96%
Spelupplevelse - 95%
Bonusar - 96%
Värde - 97%
Helhetsintryck - 96%
  • Ett bra Casino för både sportsbetting och videoslots
  • Få upp till 2000 kr med 200% bonus vid första insättningen
  • 25 Free Spins direkt vid insättning, inga krav på omsättningen, ta ut vinsterna direkt!
200% Upp till SEK1000
Bethard World Cup
Fungerar med:
Rykte - 96%
Spelupplevelse - 95%
Bonusar - 95%
Värde - 95%
Helhetsintryck - 95%
  • 100 mobilspel och 500 totalt, betyg 85%
400% Upp till €800
Fungerar med:
Rykte - 97%
Spelupplevelse - 95%
Bonusar - 95%
Värde - 95%
Helhetsintryck - 95%
  • Mobil spel tillgängligt
  • Specialister på live casino spel
  • Inkluderar spelguider
100% Upp till SEK3000
Codeta Live Casino
Fungerar med:
Rykte - 95%
Spelupplevelse - 96%
Bonusar - 94%
Värde - 95%
Helhetsintryck - 95%
  • Stort utbud av spelautomater
  • Flera typer av bordspel
  • Live casino med riktig dealer
400% Upp till €1000
Fungerar med:
Rykte - 94%
Spelupplevelse - 94%
Bonusar - 94%
Värde - 94%
Helhetsintryck - 94%
  • Roligt och spännande spel
  • Spana in Beartown
  • Innovativa bonusar
300% Upp till SEK20000
Fungerar med:
Rykte - 97%
Spelupplevelse - 94%
Bonusar - 92%
Värde - 93%
Helhetsintryck - 94%