Odds Calculator

- May 10, 2025
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Convert between different odds formats (decimal, fractional, American, implied probability) and calculate potential payouts based on your stake.

Odds Input

Stake & Payout Calculator

£

About Betting Odds

Betting odds represent the probability of an event occurring and determine the payout you receive if your bet wins. Different regions use different odds formats.

Decimal Odds (European)

Decimal odds represent the total payout (including your stake) per unit wagered.

  • Format: A single decimal number (e.g., 2.50)
  • Payout Formula: Stake × Decimal Odds
  • Profit Formula: Stake × (Decimal Odds - 1)
  • Example: £100 at 2.50 odds = £250 total payout (£150 profit)
  • Implied Probability: 1 / Decimal Odds
Fractional Odds (UK/Irish)

Fractional odds show the profit relative to the stake.

  • Format: X/Y (e.g., 3/2 or 6/4)
  • Profit Formula: Stake × (Numerator/Denominator)
  • Payout Formula: Stake + (Stake × (Numerator/Denominator))
  • Example: £100 at 3/2 odds = £250 total payout (£150 profit)
  • Implied Probability: Denominator / (Numerator + Denominator)
American Odds (US)

American odds can be either positive (+) or negative (-) numbers.

  • Positive (+) Format: Shows how much profit you'd make on a £100 stake
  • Negative (-) Format: Shows how much you need to stake to make £100 profit
  • Example (+): £100 at +150 odds = £250 total payout (£150 profit)
  • Example (-): £200 at -200 odds = £300 total payout (£100 profit)
  • Implied Probability (Positive): 100 / (American Odds + 100)
  • Implied Probability (Negative): |American Odds| / (|American Odds| + 100)
Implied Probability

The implied probability represents the likelihood of an outcome occurring according to the odds.

  • Format: Percentage (e.g., 40%)
  • Decimal Conversion: 100 / Probability Percentage
  • Example: 40% probability = 2.50 decimal odds
Understanding Value in Betting

Value betting is when you believe the probability of an outcome is higher than what the odds imply.

  • Value Formula: (Your Assessed Probability × Decimal Odds) - 1
  • Positive Value: Indicates a potentially profitable bet over time
  • Example: If you believe a team has a 50% chance of winning (implied odds of 2.00), but the bookmaker offers 2.50, there's positive expected value

Understanding the Odds Calculator

The Odds Calculator is a handy tool for anyone interested in betting. It allows users to convert between various odds formats, such as decimal, fractional, American, and implied probability. This means you can easily find the odds that suit you best and calculate potential payouts based on how much you stake.

Why Use Different Odds Formats?

Different regions have their own ways of displaying odds. Each format provides the same information but in a unique way. Understanding these can help you make better betting decisions:

  • Decimal Odds: Common in Europe, showing total payout per unit wagered.
  • Fractional Odds: Popular in the UK, indicating profit relative to your stake.
  • American Odds: Used in the US, showing how much profit you can make on a $100 stake.
  • Implied Probability: Represents the percentage likelihood of an event happening based on the odds.

How to Enter Your Odds

The Odds Calculator makes it easy to enter your preferred odds format. Just select the format from the dropdown menu, and the relevant input fields will appear. Whether you choose decimal, fractional, American odds, or implied probability, you can enter the values simply and clearly.

Calculating Stake and Payout

Once you’ve entered your odds, you’ll also need to input your stake amount. The calculator will then compute possible payouts and profits. This feature helps you understand how much you could win based on your Investment. It’s straightforward and perfect for both beginners and seasoned bettors.

Results at a Glance

After you input all necessary information and perform the calculation, the results are displayed clearly. You’ll see the converted odds in all four formats, along with your potential returns:

  • Total Payout: The amount you would receive if your bet wins.
  • Profit: The amount you would make on top of your stake.
  • Calculation Explanation: Understand how the results were derived.

About Betting Odds and Their Significance

Betting odds are not just numbers; they signify the probability of an outcome. Different odds formats can impact how you interpret your chances of winning. Understanding these odds helps you evaluate bets wisely and identify value in betting situations. Recognising the potential returns can guide your betting strategy effectively.

Practical Examples to Enhance Understanding

Let’s say you’re looking at a bet with decimal odds of 2.50 and you stake $100. The calculation would reveal a total payout of $250, which includes your original stake of $100 plus a profit of $150. This example illustrates how straightforward the Odds Calculator is and how quickly it can provide meaningful insights.

Making Informed Betting Decisions

The Odds Calculator is a vital resource for anyone interested in betting. By understanding how to use it and the odds it covers, you can make informed decisions that suit your betting style. Whether you’re a novice or a more experienced bettor, this tool can help enhance your overall experience and enhance your potential for profit.