Best Options Profit Calculator: Maximize Your Trading Gains
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Options Profit & Loss Calculator
Your Options Trade Analysis
Profit/Loss: $0.00
Profit/Loss Curve at Expiration
This chart visualizes the potential profit or loss of your option trade at various underlying prices at expiration.
Scenario Breakdown at Expiration
| Underlying Price at Expiration |
Profit/Loss (per share) |
Total Profit/Loss |
| Enter values and click "Calculate Profit" to see scenarios. |
This table shows the calculated profit or loss for several key price points at expiration.
function validateInput(id, errorId, minValue, maxValue) {
var input = document.getElementById(id);
var errorElement = document.getElementById(errorId);
var value = input.value.trim();
var isValid = true;
if (value === "") {
errorElement.innerText = "This field cannot be empty.";
errorElement.classList.add('visible');
isValid = false;
} else {
var numberValue = parseFloat(value);
if (isNaN(numberValue)) {
errorElement.innerText = "Please enter a valid number.";
errorElement.classList.add('visible');
isValid = false;
} else {
if (minValue !== undefined && numberValue maxValue) {
errorElement.innerText = "Value out of range.";
errorElement.classList.add('visible');
isValid = false;
} else {
errorElement.innerText = "";
errorElement.classList.remove('visible');
}
}
}
return isValid;
}
function calculateOptionsProfit() {
var underlyingPriceValid = validateInput('underlyingPrice', 'underlyingPriceError', 0);
var strikePriceValid = validateInput('strikePrice', 'strikePriceError', 0);
var premiumPaidValid = validateInput('premiumPaid', 'premiumPaidError', 0);
var expirationPriceValid = validateInput('expirationPrice', 'expirationPriceError', 0);
var contractMultiplierValid = validateInput('contractMultiplier', 'contractMultiplierError', 1);
if (!underlyingPriceValid || !strikePriceValid || !premiumPaidValid || !expirationPriceValid || !contractMultiplierValid) {
return;
}
var underlyingPrice = parseFloat(document.getElementById('underlyingPrice').value);
var strikePrice = parseFloat(document.getElementById('strikePrice').value);
var premiumPaid = parseFloat(document.getElementById('premiumPaid').value);
var optionType = document.getElementById('optionType').value;
var expirationPrice = parseFloat(document.getElementById('expirationPrice').value);
var contractMultiplier = parseFloat(document.getElementById('contractMultiplier').value);
var totalCost = premiumPaid * contractMultiplier;
var profitLoss = 0;
var breakevenPoint = 0;
var maxPotentialProfit = 0;
var maxPotentialLoss = totalCost; // Max loss is always the premium paid
if (optionType === 'call') {
breakevenPoint = strikePrice + premiumPaid;
profitLoss = ((expirationPrice – strikePrice) * contractMultiplier) – totalCost;
maxPotentialProfit = Infinity; // Theoretically unlimited
} else { // put option
breakevenPoint = strikePrice – premiumPaid;
profitLoss = ((strikePrice – expirationPrice) * contractMultiplier) – totalCost;
// Max profit for a put is limited if the stock goes to $0
maxPotentialProfit = (strikePrice * contractMultiplier) – totalCost;
if (maxPotentialProfit < 0) maxPotentialProfit = 0; // If strike is too low, max profit might be negative
}
var primaryResultText = formatCurrency(profitLoss);
document.getElementById('primaryResult').innerText = "Profit/Loss: " + primaryResultText;
document.getElementById('breakevenPoint').innerText = formatCurrency(breakevenPoint);
document.getElementById('totalCost').innerText = formatCurrency(totalCost);
document.getElementById('potentialProfit').innerText = maxPotentialProfit === Infinity ? "Unlimited" : formatCurrency(maxPotentialProfit);
document.getElementById('potentialLoss').innerText = formatCurrency(maxPotentialLoss);
document.getElementById('resultsContainer').style.display = 'block';
updateChartAndTable(strikePrice, breakevenPoint, totalCost, optionType, contractMultiplier);
}
function formatCurrency(amount) {
if (amount === Infinity) return "Unlimited";
if (isNaN(amount)) return "$0.00";
var formatted = amount.toFixed(2);
return "$" + formatted.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
function resetCalculator() {
document.getElementById('optionsProfitForm').reset();
document.getElementById('primaryResult').innerText = "Profit/Loss: $0.00";
document.getElementById('breakevenPoint').innerText = "$0.00";
document.getElementById('totalCost').innerText = "$0.00";
document.getElementById('potentialProfit').innerText = "$0.00";
document.getElementById('potentialLoss').innerText = "$0.00";
document.getElementById('resultsContainer').style.display = 'none';
clearErrorMessages();
clearChart();
clearTable();
}
function clearErrorMessages() {
var errorElements = document.getElementsByClassName('error-message');
for (var i = 0; i < errorElements.length; i++) {
errorElements[i].innerText = "";
errorElements[i].classList.remove('visible');
}
}
function copyResults() {
var underlyingPrice = document.getElementById('underlyingPrice').value;
var strikePrice = document.getElementById('strikePrice').value;
var premiumPaid = document.getElementById('premiumPaid').value;
var optionType = document.getElementById('optionType').value;
var expirationPrice = document.getElementById('expirationPrice').value;
var contractMultiplier = document.getElementById('contractMultiplier').value;
var primaryResult = document.getElementById('primaryResult').innerText;
var breakevenPoint = document.getElementById('breakevenPoint').innerText;
var totalCost = document.getElementById('totalCost').innerText;
var potentialProfit = document.getElementById('potentialProfit').innerText;
var potentialLoss = document.getElementById('potentialLoss').innerText;
var summary = "— Options Trade Analysis —\n";
summary += "Underlying Price: " + underlyingPrice + "\n";
summary += "Strike Price: " + strikePrice + "\n";
summary += "Premium Paid (per share): $" + premiumPaid + "\n";
summary += "Option Type: " + optionType.charAt(0).toUpperCase() + optionType.slice(1) + "\n";
summary += "Projected Price at Expiration: $" + expirationPrice + "\n";
summary += "Contract Multiplier: " + contractMultiplier + "\n\n";
summary += primaryResult + "\n";
summary += "Breakeven Point: " + breakevenPoint + "\n";
summary += "Total Cost: " + totalCost + "\n";
summary += "Max Potential Profit: " + potentialProfit + "\n";
summary += "Max Potential Loss: " + potentialLoss + "\n";
if (navigator.clipboard && window.isSecureContext) {
navigator.clipboard.writeText(summary).then(function() {
alert('Results copied to clipboard!');
}).catch(function(err) {
console.error('Failed to copy: ', err);
prompt('Copy manually:', summary);
});
} else {
// Fallback for older browsers or non-HTTPS
prompt('Copy manually:', summary);
}
}
// Charting Logic
var profitLossChart;
var chartContext;
function initializeChart() {
chartContext = document.getElementById('profitLossChart').getContext('2d');
profitLossChart = new Chart(chartContext, {
type: 'line',
data: {
labels: [], // Will be populated with prices
datasets: [
{
label: 'Profit/Loss ($)',
data: [], // Will be populated with P/L values
borderColor: 'var(–primary-color)',
backgroundColor: 'rgba(0, 74, 153, 0.1)',
fill: false,
tension: 0.1
},
{
label: 'Breakeven Line',
data: [],
borderColor: 'var(–success-color)',
borderDash: [5, 5],
fill: false,
pointRadius: 0,
spanGaps: true
}
]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
x: {
title: {
display: true,
text: 'Underlying Price at Expiration ($)'
}
},
y: {
title: {
display: true,
text: 'Profit / Loss ($)'
},
beginAtZero: false // Adjust based on data range
}
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
var label = context.dataset.label || '';
if (label) {
label += ': ';
}
if (context.parsed.y !== null) {
label += formatCurrency(context.parsed.y);
}
return label;
}
}
}
}
}
});
}
function updateChartAndTable(strikePrice, breakevenPoint, totalCost, optionType, contractMultiplier) {
if (!profitLossChart) {
initializeChart();
}
var prices = [];
var pnlValues = [];
var breakevenData = [];
var currentUnderlying = parseFloat(document.getElementById('underlyingPrice').value) || strikePrice;
var maxPrice = currentUnderlying + Math.max(strikePrice, currentUnderlying) * 0.5; // Extend range
var minPrice = currentUnderlying – Math.max(strikePrice, currentUnderlying) * 0.5;
if (minPrice < 0) minPrice = 0;
// Generate data points across a range of prices
var priceStep = (maxPrice – minPrice) / 20; // 20 data points
for (var i = 0; i = minPrice && breakevenPoint p > breakevenPoint);
if (index === -1) { // If breakeven is the highest point
prices.push(breakevenPoint);
pnlValues.push(0); // PnL is 0 at breakeven
breakevenData.push(breakevenPoint);
} else {
prices.splice(index, 0, breakevenPoint);
pnlValues.splice(index, 0, 0);
breakevenData.splice(index, 0, breakevenPoint);
}
}
profitLossChart.data.labels = prices;
profitLossChart.data.datasets[0].data = pnlValues;
profitLossChart.data.datasets[1].data = breakevenData; // Set breakeven line data
profitLossChart.options.scales.y.beginAtZero = Math.min(…pnlValues) >= 0 && Math.max(…pnlValues) >= 0; // Auto adjust beginAtZero
profitLossChart.update();
// Update Table
updateScenarioTable(prices, pnlValues, totalCost, optionType, contractMultiplier);
}
function updateScenarioTable(prices, pnlValues, totalCost, optionType, contractMultiplier) {
var tableBody = document.getElementById('scenarioTableBody');
tableBody.innerHTML = "; // Clear existing rows
var scenarios = [
{ label: "Significantly Below Breakeven", price: Math.max(0, prices[0]) }, // Lowest price calculated
{ label: "Below Breakeven", price: Math.max(0, prices[Math.floor(prices.length / 4)]) },
{ label: "At Breakeven", price: prices.find(p => Math.abs(p – breakevenPoint) s.price === parseFloat(document.getElementById('strikePrice').value))) {
scenarios.push({ label: "At Strike Price", price: parseFloat(document.getElementById('strikePrice').value) });
}
// Ensure breakeven is included if not found exactly
if (!scenarios.some(s => Math.abs(s.price – breakevenPoint) < 0.01)) {
scenarios.push({ label: "At Breakeven", price: breakevenPoint });
}
// Sort scenarios by price to ensure logical order
scenarios.sort(function(a, b) {
return a.price – b.price;
});
// Remove duplicates while preserving order if needed, or just display unique ones
var uniqueScenarios = [];
var seenPrices = new Set();
scenarios.forEach(function(scenario) {
if (!seenPrices.has(scenario.price)) {
uniqueScenarios.push(scenario);
seenPrices.add(scenario.price);
}
});
uniqueScenarios.forEach(function(scenario) {
var price = scenario.price;
if (price < 0) price = 0; // Price cannot be negative
var currentPnl = 0;
if (optionType === 'call') {
currentPnl = ((price – strikePrice) * contractMultiplier) – totalCost;
} else { // put
currentPnl = ((strikePrice – price) * contractMultiplier) – totalCost;
}
var row = tableBody.insertRow();
var cellPrice = row.insertCell(0);
var cellPnLPerShare = row.insertCell(1);
var cellTotalPnL = row.insertCell(2);
cellPrice.innerText = formatCurrency(price);
cellPnLPerShare.innerText = formatCurrency(currentPnl / contractMultiplier);
cellTotalPnL.innerText = formatCurrency(currentPnl);
// Highlight breakeven row if applicable
if (Math.abs(currentPnl) < 1 && Math.abs(price – breakevenPoint) 0) {
row.style.backgroundColor = '#e0ffe0'; // Light green for profit
} else if (currentPnl < 0) {
row.style.backgroundColor = '#ffe0e0'; // Light red for loss
}
});
}
function clearChart() {
if (profitLossChart) {
profitLossChart.data.labels = [];
profitLossChart.data.datasets[0].data = [];
profitLossChart.data.datasets[1].data = [];
profitLossChart.update();
}
}
function clearTable() {
var tableBody = document.getElementById('scenarioTableBody');
tableBody.innerHTML = '
| Enter values and click "Calculate Profit" to see scenarios. |
';
}
// Initial chart setup
document.addEventListener('DOMContentLoaded', function() {
initializeChart();
// Ensure initial state is clear, display is none for results container
document.getElementById('resultsContainer').style.display = 'none';
});