This calculator helps freelance professionals estimate the profitability of a project by considering various income and expense factors. Understanding your potential profit margin is crucial for setting competitive rates and ensuring your business is sustainable.
function calculateProfitability() {
var projectValue = parseFloat(document.getElementById("projectValue").value);
var estimatedHours = parseFloat(document.getElementById("estimatedHours").value);
var hourlyRate = parseFloat(document.getElementById("hourlyRate").value);
var softwareCosts = parseFloat(document.getElementById("softwareCosts").value);
var marketingCosts = parseFloat(document.getElementById("marketingCosts").value);
var overheadCosts = parseFloat(document.getElementById("overheadCosts").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
// Input validation
if (isNaN(projectValue) || projectValue <= 0 ||
isNaN(estimatedHours) || estimatedHours <= 0 ||
isNaN(hourlyRate) || hourlyRate <= 0 ||
isNaN(softwareCosts) || softwareCosts < 0 ||
isNaN(marketingCosts) || marketingCosts < 0 ||
isNaN(overheadCosts) || overheadCosts < 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all fields.";
return;
}
// Calculations
var totalCosts = softwareCosts + marketingCosts + overheadCosts;
var potentialEarnings = projectValue; // Assuming projectValue is what you'd charge
var actualLaborCost = estimatedHours * hourlyRate;
var netProfit = potentialEarnings – totalCosts – actualLaborCost;
var profitMargin = (netProfit / potentialEarnings) * 100;
// Display Results
var resultHTML = "