A parlay bet combines multiple individual wagers, known as "legs," into a single bet. For the parlay to win, every single leg must be successful. While parlays offer significantly higher payouts than individual bets, they also come with increased risk because the failure of just one leg results in the loss of the entire parlay.
This calculator helps you determine the total decimal and American odds for your parlay bet by multiplying the odds of each individual leg. Simply enter the decimal odds for each selection, and the calculator will do the rest.
When you place a parlay bet, the odds of each individual selection (or "leg") are multiplied together to determine the total odds for the parlay. This multiplicative effect is what leads to the much larger potential payouts compared to betting on each leg separately.
How the Calculator Works:
Decimal Odds Input: You enter the decimal odds for each leg of your parlay. Decimal odds are straightforward: a 2.00 odd means you win 2 units for every 1 unit staked (your original stake + 1 unit profit).
Multiplication: The calculator takes all the valid decimal odds you've entered and multiplies them together. For example, if you have three legs with odds of 2.00, 1.80, and 2.50, the total decimal odds would be 2.00 * 1.80 * 2.50 = 9.00.
American Odds Conversion: For convenience, the calculator also converts the total decimal odds into American odds.
If decimal odds are 2.00 or higher, American odds are positive (e.g., +100 for 2.00, +200 for 3.00).
If decimal odds are less than 2.00, American odds are negative (e.g., -150 for 1.66, -200 for 1.50).
Example:
Let's say you want to bet on three football games:
Leg 1: Team A to win at 2.00 odds.
Leg 2: Team B to win at 1.80 odds.
Leg 3: Team C to win at 2.50 odds.
Using the calculator:
Enter 2.00 for Leg 1, 1.80 for Leg 2, and 2.50 for Leg 3.
The calculator will output:
Total Parlay Odds (Decimal): 9.00
Total Parlay Odds (American): +800
This means if you stake $100 on this parlay and all three teams win, your potential payout would be $900 (including your original $100 stake), for a profit of $800.
Risks and Rewards:
Parlays are attractive due to their high potential payouts, but they are inherently riskier. The more legs you add, the higher the odds become, but also the lower the probability of all outcomes occurring. It's crucial to understand that even one losing leg means the entire parlay bet is lost.
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display: flex;
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var legCount = 3; // Initial number of legs
function addLeg() {
legCount++;
var container = document.getElementById('parlayLegsContainer');
var newLegDiv = document.createElement('div');
newLegDiv.className = 'parlay-leg';
newLegDiv.innerHTML = `
<input type="number" step="0.01" id="legOdds${legCount}" value="2.00" min="1.01" oninput="this.value = this.value
`;
container.appendChild(newLegDiv);
}
function calculateParlayOdds() {
var totalDecimalOdds = 1;
var validInputs = 0;
var resultDiv = document.getElementById('parlayResult');
resultDiv.innerHTML = ";
for (var i = 1; i <= legCount; i++) {
var inputElement = document.getElementById('legOdds' + i);
if (inputElement) {
var odds = parseFloat(inputElement.value);
if (isNaN(odds) || odds < 1.01) {
resultDiv.innerHTML = 'Please enter valid decimal odds (1.01 or higher) for all legs.';
return;
}
totalDecimalOdds *= odds;
validInputs++;
}
}
if (validInputs === 0) {
resultDiv.innerHTML = 'Please add at least one leg to calculate parlay odds.';
return;
}
var americanOdds = convertDecimalToAmerican(totalDecimalOdds);
resultDiv.innerHTML = `
Total Parlay Odds (Decimal): ${totalDecimalOdds.toFixed(2)}
Total Parlay Odds (American): ${americanOdds}
`;
}
function convertDecimalToAmerican(decimalOdds) {
if (decimalOdds >= 2.00) {
return '+' + ((decimalOdds – 1) * 100).toFixed(0);
} else {
return '-' + (100 / (decimalOdds – 1)).toFixed(0);
}
}