Contribution Margin Calculator Selling Price per Unit ($): Variable Cost per Unit ($): Number of Units Sold: Total Fixed Costs ($): Calculate Contribution function calculateContribution() { var sellingPrice = parseFloat(document.getElementById(‘sellingPrice’).value); var variableCost = parseFloat(document.getElementById(‘variableCost’).value); var unitsSold = parseFloat(document.getElementById(‘unitsSold’).value); var fixedCosts…

Circular Area Calculator Radius (units): Calculate Area The area of the circle will appear here. function calculateArea() { var radius = parseFloat(document.getElementById(‘radiusInput’).value); var resultDiv = document.getElementById(‘areaResult’); if (isNaN(radius) || radius <= 0) { resultDiv.innerHTML = 'Please enter a valid positive…

Parallel Circuit Calculator Use this calculator to determine the total equivalent resistance and total current in a parallel circuit. Enter the resistance values for up to four resistors and the voltage of the power source (optional, for current calculation). Resistor…

Carnivore Macro Calculator Use this calculator to estimate your daily protein, fat, and calorie needs based on common carnivore diet guidelines. Adjust your body weight, activity level, and specific macro targets to get personalized recommendations. Current Body Weight: lbs kg…

Cholesterol & HDL Ratio Calculator Total Cholesterol (mg/dL): HDL Cholesterol (mg/dL): Calculate Ratio Enter your cholesterol values above and click ‘Calculate Ratio’ to see your result and interpretation. function calculateCholesterolRatio() { var totalCholesterol = parseFloat(document.getElementById(‘totalCholesterol’).value); var hdlCholesterol = parseFloat(document.getElementById(‘hdlCholesterol’).value); var…

Carfax Diminished Value Calculator Estimate the potential loss in your vehicle’s value after an accident, as often reflected on a Carfax report. Pre-Accident Fair Market Value ($): Damage Severity: Minor (Scratches, Dents) Moderate (Panel Replacement, Minor Structural) Major (Significant Bodywork,…

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:…

Chinese Birth Chart Calculator Birth Year (e.g., 1985): Birth Month (1-12): Birth Day (1-31): Calculate My Chinese Birth Chart Enter your birth date and click ‘Calculate’ to find your Chinese Zodiac Animal and Element. function calculateChineseZodiac() { var birthYear =…

Christmas Light Calculator for Your Home Use this calculator to estimate the number of Christmas lights and strands you’ll need to decorate your house, along with an approximate cost and power consumption. Get ready to make your home shine bright!…

Charitable Gift Annuity (CGA) Calculator Use this calculator to estimate the potential annual payments and charitable tax deduction for a Charitable Gift Annuity (CGA). A CGA allows you to make a gift to a charity and, in return, receive fixed…