Internet Financial Calculator Tool

let calculationSteps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateFinancials(){ calculationSteps=””; const principal = parseFloat(document.getElementById(“investmentAmount”).value); const rate = parseFloat(document.getElementById(“interestRate”).value) / 100; const years = parseFloat(document.getElementById(“timePeriod”).value); const frequency = parseInt(document.getElementById(“compoundingFrequency”).value); if (isNaN(principal) || isNaN(rate) || isNaN(years) || isNaN(frequency) || principal <= 0 || rate <= 0 || years <= 0) { alert("Please enter valid positive values for all fields."); return; } const amount = principal * Math.pow(1 + rate / frequency, frequency * years); document.getElementById("finalAmount").value = formatCurrency(amount); calculationSteps += `Inputs:
Investment Amount: ${formatCurrency(principal)}
Interest Rate: ${(rate * 100).toFixed(1)}%
Time Period: ${years} Years
Compounding Frequency: ${frequency}

`; calculationSteps += `Formula:
Final Amount = Principal × (1 + Rate / Frequency) ^ (Frequency × Years)

`; calculationSteps += `Result:
Final Amount: ${formatCurrency(amount)}
`; if (document.getElementById(“calculationSteps”).style.display === “block”) { document.getElementById(“calculationSteps”).innerHTML = calculationSteps; } } function resetCalculator(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); calculationSteps = “”; document.getElementById(“calculationSteps”).innerHTML = “

Not calculated yet.

“; } function toggleCalculationSteps(){ const stepsDiv = document.getElementById(“calculationSteps”); const arrow = document.getElementById(“toggleArrow”); if (stepsDiv.style.display === “none” || stepsDiv.style.display === “”) { stepsDiv.style.display = “block”; arrow.style.transform = “rotate(180deg)”; stepsDiv.innerHTML = calculationSteps || “

Not calculated yet.

“; } else { stepsDiv.style.display = “none”; arrow.style.transform = “rotate(0deg)”; } } function formatCurrency(n) { return currencySymbol + n.toFixed(2) + ” ” + fixedCurrency; }