Ecological Footprint Calculator Estimate your personal ecological footprint based on your lifestyle choices. This calculator provides a simplified approximation of the land and sea area required to support your activities and absorb your waste. Number of People in Household: Energy…

Dates are fundamental to planning, tracking, and understanding the passage of time. Whether you’re managing project deadlines, calculating someone’s exact age, or simply figuring out a future event, a reliable date calculator can save you time and prevent errors. This…

Net Promoter Score (NPS) Calculator Number of Promoters (Score 9-10): Number of Passives (Score 7-8): Number of Detractors (Score 0-6): Calculate NPS Your Net Promoter Score (NPS) will appear here. function calculateNPS() { var promoters = parseFloat(document.getElementById(‘promoters’).value); var passives =…

Cost of Living Index Comparison Calculator Your Current Annual Salary ($): Current City’s Cost of Living Index (e.g., 100 for national average): Target City’s Cost of Living Index (e.g., 130 for expensive, 80 for cheaper): Calculate Equivalent Salary Calculation Results:…

Used Car Value Estimator Estimate the current market value of your used car based on key factors like original price, age, mileage, and condition. Original MSRP (New Car Price): Car Model Year: Current Mileage: Car Condition: Excellent Good Fair Poor…

Knitting Gauge Calculator Use this calculator to determine your stitch and row gauge from a knitted swatch. Accurate gauge is crucial for ensuring your finished project matches the pattern’s intended size. Stitches Measured: Enter the number of stitches you measured…

Menstrual Cycle Predictor Last Menstrual Period (LMP) Start Date: Average Cycle Length (days): Calculate Cycle function calculateCycle() { var lastPeriodStartDateInput = document.getElementById(“lastPeriodStartDate”).value; var averageCycleLengthInput = document.getElementById(“averageCycleLength”).value; var cycleResultDiv = document.getElementById(“cycleResult”); if (!lastPeriodStartDateInput) { cycleResultDiv.innerHTML = “Please select your Last Menstrual…

FERS Pension Estimator High-3 Average Salary ($): Creditable Years of Service: Creditable Months of Service: Age at Retirement: Calculate Pension Estimated FERS Pension: Annual Pension: Monthly Pension: function calculateFERSPension() { var high3Salary = parseFloat(document.getElementById(‘high3Salary’).value); var serviceYears = parseFloat(document.getElementById(‘serviceYears’).value); var serviceMonths…

Shopify Calculated Shipping Cost Estimator Estimate your shipping costs on Shopify by simulating common carrier and store-defined rules. This calculator helps you understand how factors like item weight, dimensions, quantity, order value, and various fees contribute to the final shipping…

Inventory Turns Calculator Cost of Goods Sold ($): Beginning Inventory Value ($): Ending Inventory Value ($): Calculate Inventory Turns function calculateInventoryTurns() { var cogs = parseFloat(document.getElementById(‘cogs’).value); var beginningInventory = parseFloat(document.getElementById(‘beginningInventory’).value); var endingInventory = parseFloat(document.getElementById(‘endingInventory’).value); var resultDiv = document.getElementById(‘result’); if (isNaN(cogs)…