Use this calculator to determine the potential payout of your parlay bet. Enter the American odds for each leg of your parlay and your desired wager amount.
function calculateParlay() {
var wagerAmount = parseFloat(document.getElementById('wagerAmount').value);
var parlayError = document.getElementById('parlayError');
parlayError.textContent = "; // Clear previous errors
if (isNaN(wagerAmount) || wagerAmount <= 0) {
parlayError.textContent = 'Please enter a valid positive wager amount.';
document.getElementById('totalParlayOddsDecimal').textContent = '0.00';
document.getElementById('totalPayout').textContent = '0.00';
document.getElementById('totalProfit').textContent = '0.00';
return;
}
var oddsInputs = [
document.getElementById('bet1Odds').value,
document.getElementById('bet2Odds').value,
document.getElementById('bet3Odds').value,
document.getElementById('bet4Odds').value,
document.getElementById('bet5Odds').value
];
var decimalOddsArray = [];
var validBetsCount = 0;
for (var i = 0; i 0) {
decimalOdds = 1 + (oddsValue / 100);
} else { // Negative odds
decimalOdds = 1 + (100 / Math.abs(oddsValue));
}
decimalOddsArray.push(decimalOdds);
}
}
if (validBetsCount < 2) {
parlayError.textContent = 'A parlay requires at least two valid bets. Please enter odds for at least two legs.';
document.getElementById('totalParlayOddsDecimal').textContent = '0.00';
document.getElementById('totalPayout').textContent = '0.00';
document.getElementById('totalProfit').textContent = '0.00';
return;
}
var totalParlayDecimalOdds = 1;
for (var j = 0; j < decimalOddsArray.length; j++) {
totalParlayDecimalOdds *= decimalOddsArray[j];
}
var totalPayout = totalParlayDecimalOdds * wagerAmount;
var totalProfit = totalPayout – wagerAmount;
document.getElementById('totalParlayOddsDecimal').textContent = totalParlayDecimalOdds.toFixed(2);
document.getElementById('totalPayout').textContent = totalPayout.toFixed(2);
document.getElementById('totalProfit').textContent = totalProfit.toFixed(2);
}
.parlay-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
padding: 25px;
border-radius: 8px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
max-width: 600px;
margin: 20px auto;
border: 1px solid #e0e0e0;
}
.parlay-calculator-container h2 {
color: #333;
text-align: center;
margin-bottom: 20px;
font-size: 26px;
}
.parlay-calculator-container p {
color: #555;
line-height: 1.6;
margin-bottom: 15px;
}
.parlay-input-group {
margin-bottom: 15px;
display: flex;
flex-direction: column;
}
.parlay-input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #444;
font-size: 15px;
}
.parlay-input-group input[type="number"] {
padding: 10px 12px;
border: 1px solid #ccc;
border-radius: 5px;
font-size: 16px;
width: 100%;
box-sizing: border-box;
transition: border-color 0.3s ease;
}
.parlay-input-group input[type="number"]:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}
.parlay-calculator-container button {
background-color: #007bff;
color: white;
padding: 12px 25px;
border: none;
border-radius: 5px;
font-size: 18px;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
width: 100%;
box-sizing: border-box;
margin-top: 10px;
}
.parlay-calculator-container button:hover {
background-color: #0056b3;
transform: translateY(-1px);
}
.parlay-calculator-container button:active {
transform: translateY(0);
}
.parlay-results {
background-color: #e9f7ff;
border: 1px solid #cce5ff;
border-radius: 8px;
padding: 20px;
margin-top: 25px;
}
.parlay-results h3 {
color: #0056b3;
margin-top: 0;
margin-bottom: 15px;
font-size: 22px;
text-align: center;
}
.parlay-results p {
font-size: 16px;
margin-bottom: 10px;
display: flex;
justify-content: space-between;
align-items: center;
color: #333;
}
.parlay-results p span {
font-weight: bold;
color: #007bff;
font-size: 17px;
}
#parlayError {
margin-top: 15px;
font-weight: bold;
text-align: center;
}
Understanding Parlay Bets
A parlay bet is a single wager that links together two or more individual bets, known as "legs." For a parlay to win, every single leg within the parlay must be successful. If even one leg fails, the entire parlay loses. This all-or-nothing nature makes parlays inherently riskier than individual bets, but it also offers the potential for significantly higher payouts.
How Parlay Odds Are Calculated
The beauty (and danger) of a parlay lies in how its odds are calculated. Instead of adding the odds of each individual bet, the odds are multiplied together. This compounding effect is what leads to those attractive large payouts. Our calculator uses American odds, which are common in North America. Here's a quick refresher on how they work and how they convert to decimal odds for multiplication:
- Positive American Odds (+X): These odds indicate how much profit you would make on a $100 wager. For example, +150 means a $100 bet would win $150 profit, returning a total of $250. To convert to decimal odds, the formula is
1 + (X / 100). So, +150 becomes 1 + (150 / 100) = 2.50.
- Negative American Odds (-X): These odds indicate how much you need to wager to win $100 profit. For example, -200 means you need to bet $200 to win $100 profit, returning a total of $300. To convert to decimal odds, the formula is
1 + (100 / X) (where X is the absolute value of the negative odds). So, -200 becomes 1 + (100 / 200) = 1.50.
Once each leg's American odds are converted to decimal odds, they are multiplied together to get the total parlay decimal odds. This total is then multiplied by your wager amount to determine your potential payout.
Example Parlay Calculation
Let's say you want to place a $10 parlay bet with three legs:
- Bet 1: Team A to win at odds of +150
- Bet 2: Team B to win at odds of -110
- Bet 3: Team C to win at odds of +200
Here's how the calculator processes it:
- Bet 1 (+150): Converts to
1 + (150 / 100) = 2.50 decimal odds.
- Bet 2 (-110): Converts to
1 + (100 / 110) ≈ 1.909 decimal odds.
- Bet 3 (+200): Converts to
1 + (200 / 100) = 3.00 decimal odds.
Total Parlay Decimal Odds: 2.50 * 1.909 * 3.00 ≈ 14.3175
Potential Payout: $10 (Wager) * 14.3175 ≈ $143.18
Potential Profit: $143.18 - $10 = $133.18
As you can see, a relatively small wager can yield a substantial return if all your predictions are correct. However, remember the high risk involved!
Tips for Parlay Betting
- Research Each Leg: Don't just pick teams randomly. Analyze each individual game or event as if you were placing a straight bet.
- Consider Smaller Parlays: While a 10-leg parlay offers massive payouts, the probability of all 10 hitting is extremely low. Starting with 2-3 leg parlays can be a more manageable approach.
- Understand the Risk: Parlays are high-risk, high-reward. Only bet what you can afford to lose.
- Shop for Odds: Different sportsbooks may offer slightly different odds for the same events. Finding the best odds for each leg can slightly increase your potential payout.