Odds Calculator

Calculate odds ratios and probabilities easily using our precise tool.

Input

Odds format

Decimal

Fractional

Moneyline

Decimal odds

Example: 2.50 (includes stake).

Enter decimal odds ≥ 1.01.

Stake (currency)

Used to compute potential return and profit.

Enter a stake ≥ 0.

Results

Decimal input

Implied probability

—

Potential return

—

Includes stake

Profit

—

Excludes stake

Format	Value	Notes
No data yet — enter odds and click Calculate.

Two-outcome market overround (optional)

Outcome A

Format

Decimal odds

Enter decimal odds ≥ 1.01.

Outcome B

Format

Decimal odds

Enter decimal odds ≥ 1.01.

Tip: Use this to estimate bookmaker margin and fair odds.

Outcome	Implied %	Fair %	Fair decimal	Fair fractional	Fair moneyline
No analysis yet.
Market total	—	Overround = Market total − 100%

What is an Online Odds Calculator?

An Online Odds Calculator is a tool used to compute and convert betting odds or probabilities in various formats. It helps users understand the likelihood of an event occurring and calculates potential payouts based on wagered amounts. Odds can be expressed in different formats, such as decimal, fractional, or moneyline (American odds), and the calculator can quickly switch between these formats.

How to Use an Online Odds Calculator?

Select the Odds Format: Choose the format of the odds you have (e.g., decimal, fractional, or moneyline).
Enter the Odds: Input the specific odds provided by a sportsbook or relevant source.
Input the Stake: Provide the amount of money you plan to wager.
Click “Calculate”: The tool will compute:
- The implied probability of the odds.
- The potential profit and total payout for the given stake.
Review the Results: Use the calculated outcomes to make informed betting or probability decisions.

Frequently Asked Questions-

What are the different types of odds formats?
- Decimal Odds: Represent the total payout per unit wagered (e.g., 2.5 means a $1 bet returns $2.50).
- Fractional Odds: Common in the UK, show potential profit relative to the stake (e.g., 5/2 means $5 profit for every $2 bet).
- Moneyline Odds: Used in the US, with positive (+) odds showing profit on a $100 bet and negative (-) odds indicating the stake required to win $100.
What is implied probability in odds?
Implied probability converts betting odds into a percentage chance of an event occurring. For example, decimal odds of 2.0 indicate a 50% probability.
Can this tool convert between odds formats?
Yes, most online odds calculators allow users to switch between decimal, fractional, and moneyline formats.
What is the purpose of using an odds calculator?
An odds calculator helps bettors:
- Understand the potential payout and profit for a bet.
- Convert odds into probabilities.
- Compare different betting options.
Can this tool handle multiple bets, like parlays?
Some advanced odds calculators support multi-bet scenarios, such as parlays or accumulators, to compute the overall odds and payouts. Always check the tool's features.