How to Read and Know Betting Odds in Sports

Learn Main Betting Types
Betting odds show up in three big types, each with its own way to tell how much you might win. American odds, decimal odds, and fractional odds are key to figuring out sports bets all over the world.
American Odds System
The plus/minus system (+150/-150) is the usual way in US betting. With plus odds (+150), you win $150 on a $100 bet, while minus 온카스터디 공식파트너 확인 odds (-150) need $150 to win $100.
Decimal Odds Type
Decimal odds (2.50) tell the whole payout, stake included. To find out what you get back, multiply your bet by the decimal. For instance, a $100 bet at 2.50 gives back $250.
Fractional Odds System
Fractional odds (5/1) make it easy to see the profit ratio. The first number is what you might win, the second is the stake. A 5/1 bet gets you $500 on a $100 bet.
Switching Between Odds Types
Changing odds types needs simple math:
- To shift American to decimal: For plus odds, divide by 100 and add 1
- For minus odds: Divide 100 by the true value and add 1
- To change fractional to decimal: Divide the first number by the second and add 1
Finding Out Possible Wins
How to figure out wins changes by type:
- American: Plus odds show win per $100, minus shows needed stake for $100 win
- Decimal: Multiply stake by odds for total payout
- Fractional: Multiply stake by the ratio for win amount
Knowing these bet checks helps tell the likely wins and guides smart betting choices.
Get to Know Betting Odds Types: A Full Guide
The Three Key Types of Betting Odds
Sports bettors meet three key odds types around the world: American (Moneyline), Decimal (European), and Fractional (British) odds.
American (Moneyline) Odds
American odds use a special way of plus (+) and minus (-) numbers. This type tells:
- Plus odds (+150) show likely win on a $100 bet
- Minus odds (-150) tell the needed bet to win $100
- Example: +150 gives $150 win on $100 bet
- Example: -150 needs $150 bet to win $100
Decimal (European) Odds
Decimal odds are the clearest bet type:
- Show full return including first bet
- Multiply bet by decimal odds for full return
- Example: 2.50 odds on $100 bet = $250 total return
- Includes $150 win plus $100 bet
Fractional (British) Odds
Fractional odds, mainly in UK horse racing, show:
- Wins as a piece of the bet (5/1)
- Profit ratio before giving back first bet
- Easy change to decimal: divide fraction and add 1
- Example: 5/1 changes to 6.0 in decimal (5/1 + 1)
Knowing these setups lets bettors work out likely wins right across worldwide markets.
Learn About American Odds: A Full Guide
The Basics of American Odds
American odds, also called moneyline odds, are common in U.S. sportsbooks and betting sites. These odds use two main signs: plus (+) and minus (-).
A minus sign shows the sum needed to bet to win $100. For instance, -150 odds need a $150 bet to win $100. On the other hand, a plus sign shows possible wins on a $100 bet, where +150 odds give $150 win on a $100 stake.
Turning to Implied Odds
Knowing implied odds gives key betting insights. For minus odds, work out using:
- Minus odds formula: minus odds / (minus odds + 100) x 100
- Plus odds formula: 100 / (plus odds + 100) x 100
These sums show that -150 odds match a 60% implied chance, while +150 odds show a 40% chance.
Finding Value Bets
Chances to make money betting come up by comparing your odds to the bookmaker’s odds.
When your chance guess is more than the book’s odds, you can spot good bet chances.
This planned way to look at odds helps you make smart bet choices based on math, not just gut feeling.
Learn Decimal Odds in Sports Bets

What Are Decimal Odds?
Decimal odds lead European bets and are one of the simplest bet figuring ways.
These odds look like numbers like 2.00, 1.50, or 3.75, right away showing likely returns for each unit bet, first bet included.
Working Out Likely Wins
The way to find out returns with decimal odds is really simple: multiply your bet by the decimal number.
For instance:
- A $100 bet at odds of 2.50 returns $250 ($100 x 2.50)
- Total win equals $150 (total return minus first bet)
- Odds of 2.00 mean even-money bets
- Numbers below 2.00 mean favorites
- Numbers above 2.00 show underdogs
Turning to Implied Odds
Implied odds figuring helps grasp the bookmaker’s view:
- Divide 1 by the decimal odds
- Multiply by 100 for percentage
- Example: For odds of 2.50
- (1 / 2.50) x 100 = 40%
- Shows bookie’s guess of what might happen
Quick Odds Guide
- Favorite odds: < 2.00
- Even money: 2.00
- Underdog odds: > 2.00
- Total return: Bet x Decimal Odds
- Win: Total Return – First Bet
Learn Fractional Odds in Sports Bets
The Basics of Fractional Odds
Fractional odds are the old British bet type, shown as ratios like 5/1, 2/1, or 6/4.
These odds tell the link between likely win and bet, making them key for bet fans.
Figuring Returns with Fractional Odds
The way to find likely returns uses a simple formula:
- Multiply bet by first number (top)
- Divide by second number (bottom)
- Add first bet for full return
Example Sums
With odds of 5/1, a $100 bet gives:
- Win: (100 x 5) / 1 = $500
- Total Return: $500 + $100 = $600
For more tricky odds like 6/4:
- $100 bet sum: (100 x 6) / 4 = $150 win
- Total Return: $150 + $100 = $250
Turning to Implied Odds
Implied odds help see betting value using this formula:
* Chance = (bottom / (top + bottom)) x 100
Chance Examples
- 5/1 odds: 1 / (5 + 1) x 100 = 16.67%
- 6/4 odds: 4 / (6 + 4) x 100 = 40%
Knowing these chance changes helps bettors match bookie odds to their own event outcome guesses, spotting good bet chances in the market.
Change Between Odds Types: The Full Guide
Learn Odds Change Basics
Odds changing is key for smart sports betting and needs knowing the math links between fractional, decimal, and American odds types. This full guide tells exact change ways across all bet types.
Changing Fractional to Decimal Odds
The main formula for changing fractional to decimal odds:
- Divide the top number by the bottom
- Add 1 to the sum
Example: 5/1 odds change to (5/1) + 1 = 6.0 decimal odds
Decimal to Fractional Change
To turn decimal odds to fractional:
- Take 1 from the decimal number
- Make it the simplest fraction
Example: 6.0 decimal odds turn to 5/1 after taking 1 and making simple
American Odds Change Ways
Plus American Odds to Decimal
Formula: (American odds / 100) + 1
Example: +150 American odds change to 2.50 decimal odds
Minus American Odds to Decimal
Formula: (100 / |American odds|) + 1
Example: -150 American odds change to 1.67 decimal odds
Decimal to American Odds Change
For Decimal Odds > 2.0
Formula: (decimal – 1) x 100
For Decimal Odds < 2.0
Formula: -100 / (decimal – 1)
These math sums let bettors fast read odds across many sportsbooks and betting sites, making sure they make smart betting choices no matter the odds type they see.
Find Out Likely Betting Payouts: A Full Guide
Know Basic Payout Sums
Possible returns sum-up is key for making smart betting moves.
This full guide breaks down payout sums across all big odds types to help push your bet plan.
Decimal Odds Sums
Decimal odds offer the simplest way to find out likely returns. The formula is:
*(Stake x Decimal Odds) – Stake = Win*
Example sum:
$100 stake at 2.50 odds
(100 x 2.50) – 100 = $150 win
American Odds Sums
American odds use a special way based on $100 parts:
- Plus odds (+150) tell likely win on a $100 bet
- Minus odds (-150) show needed bet to win $100
Fractional Odds Sums
Fractional odds need you to multiply your bet by the fraction:
*(Stake x Fraction) = Win*
Example sum:
$100 stake at 3/1 odds Why Mobile Gambling Is the Future of Casinos
(100 x 3/1) = $300 win
Top Tips for Hard Sums
- Always add stake return in final payout sums
- Use digital tools for hard odds
- Double-check many bet sums
- Think on fees or cuts
- Check payout limits before making big bets
These formulas give the base for right payout guesses across all betting setups and types.