Odds Converter
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Fraction
Decimal American (Moneyline) Implied Probability %
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Odds Conversion Table
Fraction Decimal American (Moneyline) Implied
Probability 1/100 1.01 -10000 99% 1/5 1.2 -500 83.3% 2/9 1.22 -450 81.8% 1/4 1.25 -400
80% 2/7 1.29 -350 77.8% 3/10 1.3 -333.3 76.9% 1/3 1.33 -300 75% 4/11 1.36 -275 73.3%
2/5 1.4 -250 71.4% 4/9 1.44 -225 69.2% 1/2 1.5 -200 66.7% 8/15 1.53 -187.5 65.2% 4/7
1.57 -175 63.6% 8/13 1.62 -162.5 61.9% 4/6 1.67 -150 60% 8/11 1.73 -137.5 57.9% 4/5 1.8
-125 55.6% 5/6 1.83 -120 54.5% 10/11 1.91 -110 52.4% 1/1 (evens) 2 +100 50% 21/20 2.05
+105 48.8% 11/10 2.1 +110 47.6% 23/20 2.15 +115 46.5% 6/5 2.2 +120 45.5% 5/4 2.25 +125
44.4% 11/8 2.38 +137.5 42.1% 7/5 2.4 +140 41.7% 6/4 2.5 +150 40% 8/5 2.6 +160 38.5%
13/8 2.62 +162.5 38.1% 7/4 2.75 +175 36.4% 9/5 2.8 +180 35.7% 15/8 2.88 +187.5 34.8%
2/1 3 +200 33.3% 11/5 3.2 +220 31.2% 9/4 3.25 +225 30.8% 12/5 3.4 +240 29.4% 5/2 3.5
+250 28.6% 13/5 3.6 +260 27.8% 11/4 3.75 +275 26.7% 3/1 4 +300 25% 16/5 4.2 +320 23.8%
10/3 4.33 +333.3 23.1% 7/2 4.5 +350 22.2% 4/1 5 +400 20% 9/2 5.5 +450 18.2% 5/1 6 +500
16.7% 11/2 6.5 +550 15.4% 6/1 7 +600 14.3% 13/2 7.5 +650 13.3% 7/1 8 +700 12.5% 15/2
8.5 +750 11.8% 8/1 9 +800 11.1% 9/1 10 +900 10% 10/1 11 +1000 9.1% 11/1 12 +1100 8.3%
12/1 13 +1200 7.7% 13/1 14 +1300 7.1% 14/1 15 +1400 6.7% 15/1 16 +1500 6.2% 16/1 17
+1600 5.9% 18/1 19 +1800 5.3% 20/1 21 +2000 4.8% 25/1 26 +2500 3.8% 33/1 34 +3300 2.9%
50/1 51 +5000 2% 66/1 67 +6600 1.5% 100/1 101 +10000 1% 1000/1 1001 +100000 0.1%
Format
Definitions - Odds and Probabilities
There are 3 methods of stating odds that most
bookmakers and websites support.
Implied Probability is also useful when evaluating a
bet or checking how likely an outcome is.
Fractions Used primarily in the UK and
Ireland, fractions quote the potential profit should the bet succeed relative to the
stake. For example, if £5 is bet at odds of 2/1 the potential profit is £10 (£5 * 2)
and the total returned is £15 (£10 plus the £5 stake). Decimals Decimals quote the
potential return should the bet succeed relative to the stake. For example, if £5 is
bet at odds of 3 the total returned is £15 (£5 * 3) the potential profit is £10 (£5 * 3
minus the £5 stake). American - Moneyline Positive figures: The odds state the winnings
on a £100 bet e.g. american odds of 110 would win £110 on a £100 bet.
Negative figures:
The odds state how much must be bet to win £100 profit e.g. american odds of -120 would
win £100 on a £120 bet. Implied Probability Odds correlate to probability e.g a 3/1 bet
is expected to win one in every 4 attempts. Hence the probability is 25%.
How to
Convert Odds and Probabilities - FAQ
How do you convert odds to probability
percentages? Decimal - 1 divided by the decimal odds, multiplied by 100 to give a
percentage e.g. decimal odds of 2 = (1/2) * 100 = 50%.
- 1 divided by the decimal odds,
multiplied by 100 to give a percentage e.g. decimal odds of 2 = (1/2) * 100 = 50%.
Fraction - 1 divided by (the fractional odds plus 1), multiplied by 100 to give a
percentage. e.g. fractional odds of 3/1 = (1 / ((3/1) + 1)) * 100 = 25%.
- 1 divided by
(the fractional odds plus 1), multiplied by 100 to give a percentage. e.g. fractional
odds of 3/1 = (1 / ((3/1) + 1)) * 100 = 25%. American: Positive odds - 100 divided by
(the american odds plus 100), multiplied by 100 to give a percentage e.g. american odds
of 150 = (100 / (150 + 100)) * 100 = 40%. Negative odds - Firstly multiply the american
odds by -1 and use the positive value in the following formula: american odds divided
by (the american odds plus 100), multiplied by 100 to give a percentage e.g. american
odds of -300 = (300/(300+100)) * 100 = 75%.
How do you convert probability percentages
to odds? Decimal - 1 divided by (the percentage divided by 100) e.g. a probability of
50% = 1 / (50 / 100) = 2.
- 1 divided by (the percentage divided by 100) e.g. a
probability of 50% = 1 / (50 / 100) = 2. Fraction - (1 divided by (the percentage
divided by 100)) minus 1 e.g. a probability of 25% = (1 / (25 / 100)) - 1 = 3 = 3/1.
-
(1 divided by (the percentage divided by 100)) minus 1 e.g. a probability of 25% = (1 /
(25 / 100)) - 1 = 3 = 3/1. American: Positive odds - (100 divided by (the percentage
divided by 100)) minus 100 e.g. a probability of 10% = (100 / (10 / 100)) - 100 = 900.
Negative odds - The probability divided by (1 minus (the probability divided by 100))
then multiply by -1 to convert into a negative e.g. a probability of 60% = (60 / (1 -
(60/100))) * -1 = -150.
How do you convert american odds to decimal? Positive odds - 1
plus (the american odds divided by 100) e.g. american odds of 300 = 1 + (300/100) =
4.
- 1 plus (the american odds divided by 100) e.g. american odds of 300 = 1 +
(300/100) = 4. Negative odds - 1 minus (100 divided by the american odds) e.g. american
odds of -300 = 1 - (100/-300) = 1.333. How do you convert american odds to fractional?
Positive odds - The american odds divided by 100 e.g. american odds of 300 = 300/100 =
3/1.
- The american odds divided by 100 e.g. american odds of 300 = 300/100 = 3/1.
Negative odds - Minus 100 divided by the american odds e.g. american odds of -300 =
-100/-300 = 1/3. How do you convert fractional odds to decimal? Add 1 to the fractional
representation e.g. a fractional value of 3/1 = (3/1) + 1 = 4. How do you convert
fractional odds to american? Positive american odds - The fractional value multiplied
by 100 e.g. a fractional odds of 3/1 = (3/1) * 100 = 300.
- The fractional value
multiplied by 100 e.g. a fractional odds of 3/1 = (3/1) * 100 = 300. Negative american
odds - Negative 100 divided by the fractional odds e.g. a fractional value of 1/5 =
-100 / (1/5) = -500. How do you convert decimal odds to fractional? Subtract 1 from the
decimal representation e.g. a decimal value of 3 = 3 - 1 = 2 which is commonly
expressed as 2/1. How do you convert decimal odds to american? Positive american odds -
(The decimal value minus one) multiplied by 100 e.g. a decimal value of 3 = (3 - 1) *
100 = 200.
- (The decimal value minus one) multiplied by 100 e.g. a decimal value of 3
= (3 - 1) * 100 = 200. Negative american odds - Negative 100 divided by (the decimal
odds minus one) e.g. a decimal value of 1.2 = -100 / (1.2 - 1) = -500.
Also See
Betting
Calculator - Enter your odds and stake to calculate bet returns for all types of sports
wagers. Supports all major formats including decimal, fraction and american.
Dutching
Calculator - Odds changed since you placed your last bet? Use this calculator to
determine the stakes necessary to guarantee a fixed return regardless of the outcome.
Punters comfortable with exchange betting often use this approach as odds fluctuate
more frequently.
