What Is the Decimal Odds Calculator?
Decimal odds are the most common format used across Europe, Australia and most online betting exchanges. A decimal odd represents the total amount returned for each unit staked, including your original stake. This calculator instantly converts your stake and decimal odds into your total payout, your net profit, and the implied probability of the outcome.
How to Use It
Enter the amount you intend to wager (your stake) and the decimal odds offered by the bookmaker. The calculator multiplies the two to give the total return, subtracts the stake to show net profit, and inverts the odds to display the implied probability the market is pricing in.
The Formula Explained
The math is simple. Total payout equals stake multiplied by decimal odds.
$$\text{Payout} = \text{Stake} \times \text{Decimal Odds}$$For example, odds of 2.50 mean you get 2.5 times your stake back. Net profit is the payout minus your original stake.
$$\text{Profit} = \text{Stake} \times \left(\text{Decimal Odds} - 1\right)$$Implied probability is calculated as one divided by the decimal odds, expressed as a percentage — this tells you the chance of winning the bookmaker has built into the price.
$$\text{Implied Probability} = \frac{1}{\text{Decimal Odds}} \times 100\%$$
Worked Example
Suppose you stake $100 at decimal odds of 2.50. Your total payout is
$$100 \times 2.50 = \$250$$Your net profit is
$$250 - 100 = \$150$$The implied probability is
$$1 \div 2.50 = 0.40 = 40\%$$So the market believes this outcome has roughly a 40% chance of occurring.
FAQ
Does the payout include my stake? Yes. With decimal odds the payout already includes the stake you put in. To find profit only, subtract your stake.
What does implied probability mean? It is the probability the odds correspond to, before the bookmaker's margin. Lower odds mean a higher implied probability.
Can I use decimals like 1.85? Absolutely. Any decimal odd of \(1.01\) or higher works, including fractional values like \(1.85\) or \(3.75\).
