Numerical Derivative Calculator Function f(x) (e.g., Math.pow(x, 2) + 3*x – Math.sin(x)): Variable (e.g., x, t): Point ‘a’ to evaluate derivative at: Small step ‘h’ (e.g., 0.0001): Calculate Derivative Result: Enter values and click ‘Calculate’. Calculation Steps: Steps will appear…

Energy Consumption Calculator Appliance Power (Watts): Hours Used Per Day: Days Used Per Week: Electricity Cost Per kWh ($): Calculate Consumption Estimated Consumption & Cost: Daily Energy: 0.00 kWh Daily Cost: $0.00 Monthly Energy: 0.00 kWh Monthly Cost: $0.00 Annual…

Equity Line Calculator Baseline Value: Rate of Change per Period (%): Analysis Periods: Fixed Adjustment per Period: Calculate Equity Line function calculateEquityLine() { var baselineValue = parseFloat(document.getElementById(“baselineValue”).value); var changeRate = parseFloat(document.getElementById(“changeRate”).value); var analysisPeriods = parseInt(document.getElementById(“analysisPeriods”).value); var fixedAdjustment = parseFloat(document.getElementById(“fixedAdjustment”).value); var…

Deck Material Calculator Use this calculator to estimate the quantity of materials needed for your deck project. Input your deck dimensions and material specifications to get an approximate material list. Deck Dimensions Deck Length (feet): Deck Width (feet): Decking Boards…

Prime Factor Calculator Enter a positive integer greater than 1 to find its prime factors. Number to Factor: Calculate Prime Factors function calculatePrimeFactors() { var numberInput = document.getElementById(“numberToFactor”).value; var number = parseInt(numberInput); var resultDiv = document.getElementById(“primeFactorsResult”); // Input validation if…

Electricity Bill Calculator Estimate your monthly electricity bill by entering your appliance details and electricity rate. Appliance Power (Watts): Hours Used per Day: Days Used per Month: Number of Identical Appliances: Cost per kWh ($): Fixed Monthly Charges ($): Calculate…

Factorial Calculator Enter a non-negative integer: Calculate Factorial function calculateFactorial() { var inputNum = document.getElementById(“inputNumber”).value; var num = parseInt(inputNum); var resultDiv = document.getElementById(“result”); if (isNaN(num) || !Number.isInteger(num) || num < 0) { resultDiv.innerHTML = "Please enter a valid non-negative integer.”;…

Instagram Engagement Rate Calculator Total Likes on Post(s): Total Comments on Post(s): Number of Followers: Number of Posts Analyzed (e.g., 1 for single post, 10 for average): Calculate Engagement Rate function calculateEngagementRate() { var totalLikes = parseFloat(document.getElementById(‘totalLikes’).value); var totalComments =…

Expression Evaluator Enter Mathematical Expression: Evaluate Expression Result: Please enter an expression and click ‘Evaluate’. function calculateExpression() { var expression = document.getElementById(“mathExpression”).value; var resultDisplay = document.getElementById(“expressionResult”); if (expression.trim() === “”) { resultDisplay.innerHTML = “Error: Please enter a mathematical expression.”; resultDisplay.style.color…

Cross Multiply Calculator Enter three values in the proportion a/b = c/d to solve for the unknown (leave one field blank). Numerator 1 (a): Denominator 1 (b): Numerator 2 (c): Denominator 2 (d): Calculate Unknown function calculateCrossMultiply() { var num1…