Residual Value Calculator Original Asset Cost ($): Expected Useful Life (Years): Annual Depreciation Rate (%): Calculate Residual Value Estimated Residual Value: function calculateResidualValue() { var originalAssetCost = parseFloat(document.getElementById(“originalAssetCost”).value); var usefulLifeYears = parseFloat(document.getElementById(“usefulLifeYears”).value); var annualDepreciationRate = parseFloat(document.getElementById(“annualDepreciationRate”).value); var resultDiv = document.getElementById(“residualValueResult”);…

REM Equivalent Dose Calculator Absorbed Dose (rads): Type of Radiation: X-rays, Gamma rays, Beta particles (Q=1) Thermal Neutrons (Q=5) Fast Neutrons, Protons (Q=10) Alpha particles, Heavy ions (Q=20) Calculate REM Equivalent Dose: 0 rem function calculateRem() { var absorbedDoseInput =…

Out-the-Door Car Price Calculator Use this calculator to estimate the total “out-the-door” price of a new or used car, including all taxes, fees, and potential deductions. This helps you understand the true cost beyond the sticker price. Vehicle Price (MSRP…

Investment Return Calculator Initial Investment ($): Final Investment Value ($): Investment Period (Years): Calculate Returns function calculateInvestmentReturns() { var initialInvestment = parseFloat(document.getElementById(‘initialInvestment’).value); var finalValue = parseFloat(document.getElementById(‘finalValue’).value); var investmentPeriod = parseFloat(document.getElementById(‘investmentPeriod’).value); var resultsDiv = document.getElementById(‘investmentResults’); if (isNaN(initialInvestment) || isNaN(finalValue) || isNaN(investmentPeriod))…

Percentage Savings Calculator Original Value: Value After Savings: Calculate Savings function calculatePercentageSavings() { var originalValueInput = document.getElementById(‘originalValue’).value; var newValueInput = document.getElementById(‘newValue’).value; var resultDiv = document.getElementById(‘percentageSavingsResult’); var originalValue = parseFloat(originalValueInput); var newValue = parseFloat(newValueInput); if (isNaN(originalValue) || isNaN(newValue) || originalValue originalValue)…

Percentage to Decimal Converter Percentage Value (%): Convert to Decimal function calculatePercentageToDecimal() { var percentageInput = document.getElementById(“percentageValue”); var percentage = parseFloat(percentageInput.value); var resultDiv = document.getElementById(“decimalResult”); if (isNaN(percentage)) { resultDiv.innerHTML = “Please enter a valid number for the percentage.”; return; }…

Reorder Point Calculator Average Daily Usage (Units/Day): Lead Time (Days): Safety Stock (Units): Calculate Reorder Point function calculateReorderPoint() { var averageDailyUsage = parseFloat(document.getElementById(‘averageDailyUsage’).value); var leadTimeDays = parseFloat(document.getElementById(‘leadTimeDays’).value); var safetyStockUnits = parseFloat(document.getElementById(‘safetyStockUnits’).value); var resultDiv = document.getElementById(‘reorderPointResult’); if (isNaN(averageDailyUsage) || isNaN(leadTimeDays) ||…

Paycheck with Overtime Calculator Hourly Wage ($): Regular Hours Worked: Overtime Multiplier (e.g., 1.5 for time and a half): Overtime Hours Worked: Calculate Paycheck Calculation Results: Regular Pay: $0.00 Overtime Pay: $0.00 Total Gross Pay: $0.00 function calculatePaycheck() { var…

Quadratic Equation Solver Enter the coefficients a, b, and c for your quadratic equation in the form ax² + bx + c = 0 to find its roots. Coefficient a: Coefficient b: Coefficient c: Calculate Roots function calculateQuadratic() { var…

Net Present Value (NPV) Calculator Use this calculator to determine the Net Present Value of a project or investment by inputting the initial investment, discount rate, and projected cash flows for up to five years. Initial Investment ($): Discount Rate…