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Lazy Sports Betting Tactics
How to beat the bookies in the over-under markets
How to convert between decimal and American odds
How to get an edge in betting
How to test the credibility of a tipster`s record
Kelly criterion method
How to use Kelly Criterion for betting
How Weather Affects Sports Betting
Increase Your Chances of Winning Long Term Betting on Sports
Intermediate and Advanced Sports Betting
Common sportsbetting myths
Advices on Betting Fundamentals
Betting do's and don'ts
Choosing a staking method based on your betting profile
Betting staking plans
Value betting explained
Sports-betting- a game of numbers
Market movement in betting
Types of odds explained
European types of bets explained
American types of bets explained
Martingale Considerations in Sports Betting
In-play betting
Accumulator betting
Mobile betting
A Crash Course in Horse Racing
A Crash Course In Sports Betting
American odds versus decimal odds
Bankroll management
Money management in sportsbetting- odds, edge and variance
Basic bet types explained
Paying for Picks
Betting on winning streaks
Betting psychology- a crash course about aspiring professional bettors
Popular Sports Betting Beliefs
Do you make these 9 sportsbetting mistakes?
Does intuition have a place in sportsbetting?
Exchange betting
Randomness in sportsbetting
Fractional versus decimal odds
Home team advantage analised
How bad at sportsbetting are you?
Reasons to Keep Betting Records
How bookmakers make money
How bookmakers work
How do betting exchanges work
Should You Bet on Multiple Sports or Specialize?
How do free bets work
How does luck influence short term betting
How good are betting tipsters
Sports Betting for Beginners
How loss aversion impacts performance
How many sports to bet on
How Much Should You Bet On a Sporting Event?
Staking-one method to improve your betting
How much you should risk per bet?
How Sports Betting Has Changed Over the Last 20 Years
How To Avoid A Big Sports Betting Loss
The art of multiple betting
The history of lotteries
The value of information in soccer betting
Three careers ideally suited to betting
Tips for Better Sports Betting Results
Types of Online Sports Betting Bonuses
Understanding and managing your risk of ruin
Understanding Horse Racing Bet Types
Understanding Live Betting
Value betting is an essential skill for bettors
Ways to Increase the Percentage of Sports Bets You Win
What are drawdowns and how to manage them
What are the most common mistakes the bettors make
What are the real chances of winning the lottery?
What distinguishes winning from losing betors
What is a handicap soccer betting?
What is the Fibonacci betting system?
What is the Labouchere betting system
What is the Martingale staking system
Why do we gamble? Irrationality and overconfidence
Why patience is an essential trait for any serious bettor
Poisson Distribution: Predict the score in soccer betting
Fixed Staking vs. Variable Staking
Basketball betting: Bet types explained
7 Sure-Fire Baseball Betting Strategies
How Does In-Play Betting Work?
To Parlay, or Not to Parlay?
Wisdom of the Crowds applied to betting
CASINO ARTICLES
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How to Gamble with Dice – Popular Dice Games and Their Variations
How Online Casinos Helped Me Love Roulette Even More
My Top Three Tips for Getting Comps in Casinos
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5 Gambling Tricks You Can Only Use Online
5 LITTLE-KNOWN FACTS THAT AFFECT YOUR AVERAGE HOURLY LOSS IN A CASINO
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5 Things All Casino Gambling Fans Are Sick of Hearing
5 Tips to Managing Your Casino Bankroll Effectively
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7 THINGS YOU NEVER KNEW ABOUT CASINOS
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The 12 Types of People I Meet in Casinos – Analyzing My Fellow Gamblers
10 SURE-FIRE CASINO GAMBLING STRATEGIES THAT WORK
What I Love Most About My Three Favorite Video Poker Games
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Is There a Gambling System That Never Loses?
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What’s Next for Online Gambling?
Using Self-Discipline in the Casino
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Going All-In – When to Bet It All in Poker
10 Things I Wish I’d Known About Roulette Before I Started
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BEATING BACCARAT – WINNING SYSTEMS & STRATEGIES
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Gambling and Poker Playing: 10 Things to Know
GAMBLING GAMES THAT ARE REALLY WORTH TRYING
HOW TO AVOID GOING BROKE AT THE ROULETTE WHEEL
HOW TO GET YOUR FIRST ONLINE CASINO SIGNUP BONUS
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How to Spend Your Gambling Winnings
HOW TO SURVIVE A BLIZZARD AT THE CRAPS TABLE
HOW TO WIN AT ROULETTE
How to Win Consistently at Casino Gambling
How to Win Consistently at Craps
How to Win Consistently at Roulette
HOW VOLATILITY WORKS IN CASINO GAMBLING
Is It Possible to Play Roulette as a Career (Or Even as a Part Time Gig)?
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MONEY MANAGEMENT STRATEGY FOR YOUR NEXT CASINO TRIP
ONLINE CASINO DISPUTES
SKILL BASED CASINO GAMES: PROS AND CONS
The 5 secret joys of casino gambling
The Benefits of an Online Gambling Environment
The Best Long-Term Strategies for Playing Progressive Jackpot Slots
THE BIGGEST JACKPOTS IN ONLINE GAMBLING
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Fractional versus decimal odds

There are three main odds formats available to bettors; Fractional odds, Decimal odds and American odds. Fractional odds have historically been used in the UK but Decimal odds are arguably the most popular format. How do you convert Fractional odds into Decimal or American? Read on to find out.

It might be obvious to most bettors but regardless of which odds format you use for a bet, the potential profit will always be the same - it is just how these odds are presented that differs. 

Fractional odds, unsurprisingly, are displayed as fractions. American odds use a unique + and - system and Decimal odds, as you may have guessed, are displayed as decimals - the key difference is that Decimal odds always include the stake.

You can use our helpful bet calculator to work out the potential profit and return of your bet in any odds format, but knowing how to work this out for yourself is a critical part of understanding how odds work and ultimately, being able to calculate expected value.

Fractional odds to Decimal odds conversion

Converting Fractional odds into Decimal odds is fairly straightforward. Simply turn the fractional number into a decimal number by turning the fraction into its decimal equivalent and then, crucially, add one.

Here’s an example of how to convert Fractional odds into Decimal odds:

Numerator / denominator + 1 = Decimal odds

5/2 = 5/2 + 1 = 3.5

Decimal odds to Fractional odds conversion 

If you are more comfortable with Fractional odds you can convert Decimal odds by reversing the formula above:

Decimal odds -1 and converted into a fraction = Fractional odds 

3.5 – 1 = 2.5 which as a mixed fraction is 21/2 but in its more common improper form is 5/2.

Odds conversion chart

Fractional

Decimal

American

1/5

1.2

-500

2/9

1.22

-450

1/4

1.25

-400

2/7

1.29

-350

3/10

1.3

-333.3

1/3

1.33

-300

4/11

1.36

-275

4/9

1.44

-225

1/2

1.50

-200

4/7

1.57

-175

4/6

1.66

-150

4/5

1.80

-125

1/1

2.00

-100

5/4

2.25

+125

11/8

2.38

+137.5

7/4

2.75

+175

2/1

3.00

+200

9/4

3.25

+225

5/2

3.50

+250

3/1

4.00

+300

7/2

4.50

+350

5/1

6.00

+500

10/1

11.00

+1000

20/1

21.00

+2000

50/1

51.00

+5000

100/1

101.00

+10000

1000/1

1001.00

+100000

Looking for odds that aren’t included in the odds conversion chart? Use Pinnacle’s odds converter.

Calculating profits with Fractional odds

Fractional odds originated within horse racing as a way to represent the return on the underlying probability. They shouldn‘t be confused with ratios. Although 3/1 or “three to one” make it easy for bettors to understand their profit in relation to the stake – your return is three times your stake - the more accurate and precise the odds are, the more complicated things become.

 

Fractional odds

Odds expression (most commonly used in the UK) which presents odds in a fractional format.

 

The easiest way to calculate profits using Fractional odds is to view the fraction as Profit/Stake - so a $1 bet at 5/1 would result in $5 profit. However, the odds can be unfamiliar fractions (proper and improper) and your stake might not always be a whole number so the following equation should be used:

Returns = (Stake / denominator) x numerator) + stake

So if we use a $15 bet at odds of 5/2, the calculation would be as follows:

Returns = ((15 / 2) x 5) + 15 = 52.50

Calculating profits with Decimal odds

Decimal odds have become increasingly popular in recent years. Bettors are beginning to favour the simple, more accurate Decimal representation of a bet’s potential return, which includes the stake amount.

 

Decimal odds

An odds expression (sometimes referred to as European odds) where the odds are shown in decimal format.

 

In order to calculate the return of a bet with Decimal odds, all you have to do is multiply your stake by the Decimal odds offered: 

Stake x odds = returns

Therefore, a $10 bet at odds of 3.5 would return $35.