Free Metabolic Age Calculator Use this calculator to estimate your metabolic age based on your Basal Metabolic Rate (BMR). Metabolic age is a comparison of your BMR to the average BMR for people in different chronological age groups. A lower…

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Recipe Nutrition Calculator Enter your recipe ingredients and their quantities to get a detailed nutritional breakdown per serving. Add Ingredient Ingredient Name: Quantity (grams): Add Ingredient Recipe Ingredients Number of Servings: Calculate Nutrition Nutrition Summary Enter ingredients and click ‘Calculate’…

PayPal Goods & Services Fee Calculator Use this calculator to determine the PayPal Goods & Services (G&S) fees for a transaction, or to figure out the gross amount a buyer needs to send for a seller to receive a specific…

Gear Ratio, RPM, and Speed Calculator Engine RPM: Revolutions Per Minute of the engine. Transmission Gear Ratio: The ratio of the selected transmission gear (e.g., 1.0 for 4th gear direct drive, 0.7 for overdrive). Final Drive Ratio: The differential or…

Quadratic Equation Graphing Calculator Coefficient ‘a’: Coefficient ‘b’: Coefficient ‘c’: Calculate Graph Features Graph Features: Enter the coefficients a, b, and c to find the key features of your quadratic equation’s graph. function calculateQuadraticFeatures() { var a = parseFloat(document.getElementById(‘coeffA’).value); var…

Gear Ratio and Speed Calculator Engine RPM: Transmission Gear Ratio: Final Drive Ratio: Tire Diameter (inches): Calculate Speed Results: function calculateSpeed() { var engineRPM = parseFloat(document.getElementById(“engineRPM”).value); var transmissionRatio = parseFloat(document.getElementById(“transmissionRatio”).value); var finalDriveRatio = parseFloat(document.getElementById(“finalDriveRatio”).value); var tireDiameter = parseFloat(document.getElementById(“tireDiameter”).value); var overallGearRatioResultDiv…

Furnace Size (BTU) Calculator Estimate the appropriate BTU output for your home’s furnace. Home Square Footage (sq ft): Average Ceiling Height (feet): Climate Zone: Mild (e.g., Southern US, average winter >30°F) Moderate (e.g., Mid-Atlantic, Pacific NW, average winter 20-30°F) Cold…

Freight Class Calculator Use this calculator to estimate the NMFC freight class of your shipment based on its dimensions and weight. Freight class is a standardized classification system for commodities transported by Less-Than-Truckload (LTL) carriers, primarily determined by density, but…

Gas Mileage & Trip Cost Calculator Distance Traveled (Miles): Fuel Consumed (Gallons): Fuel Price per Gallon ($): Calculate Mileage & Cost function calculateGasMileage() { var distanceTraveled = parseFloat(document.getElementById(‘distanceTraveled’).value); var fuelConsumed = parseFloat(document.getElementById(‘fuelConsumed’).value); var fuelPrice = parseFloat(document.getElementById(‘fuelPrice’).value); var mileageResultDiv = document.getElementById(‘mileageResult’);…