Rhombus Perimeter Calculator Side Length (units): Calculate Perimeter function calculateRhombusPerimeter() { var sideLengthInput = document.getElementById(“sideLength”).value; var sideLength = parseFloat(sideLengthInput); if (isNaN(sideLength) || sideLength <= 0) { document.getElementById("rhombusPerimeterResult").innerHTML = "Please enter a valid positive number for the side length."; return; }…

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:…

Formal Charge Calculator Valence Electrons of the Atom: (e.g., Nitrogen has 5, Oxygen has 6) Lone Pair Electrons on the Atom: (Total electrons in non-bonding pairs) Number of Covalent Bonds Formed by the Atom: (e.g., a single bond counts as…

Dividend Income Calculator Dividend per Share ($): Number of Shares Owned: Dividend Payment Frequency (per share amount): Annually Quarterly Monthly Calculate Dividend Income Your Estimated Dividend Income: Total Annual Dividend: $0.00 Total Quarterly Dividend: $0.00 Total Monthly Dividend: $0.00 function…

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:…

Churn Rate Calculator Customers at Beginning of Period: Customers Lost During Period: Calculate Churn Rate function calculateChurnRate() { var customersBeginning = parseFloat(document.getElementById(“customersBeginning”).value); var customersLost = parseFloat(document.getElementById(“customersLost”).value); var resultDiv = document.getElementById(“churnRateResult”); if (isNaN(customersBeginning) || isNaN(customersLost) || customersBeginning < 0 || customersLost…

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:…

Circumference of a Circle Calculator Use this calculator to find the circumference of a circle. You can input either the radius or the diameter of the circle. Radius (e.g., 5): Diameter (e.g., 10): Calculate Circumference Result: function calculateCircumference() { var…

Density Calculator Mass (grams): Volume (cm³): Calculate Density function calculateDensity() { var mass = parseFloat(document.getElementById(“massInput”).value); var volume = parseFloat(document.getElementById(“volumeInput”).value); var resultDiv = document.getElementById(“densityResult”); if (isNaN(mass) || isNaN(volume) || mass < 0 || volume <= 0) { resultDiv.style.color = "#dc3545"; resultDiv.style.backgroundColor…

Spouse Social Security Benefit Calculator Estimate your potential monthly Social Security spousal benefit. This calculator helps you understand how your spouse’s Primary Insurance Amount (PIA), your own PIA, and your claiming age affect your benefit. Primary Earner’s Full Retirement Age…