Month: January 2026

This calculator helps you determine your heart rate directly from an electrocardiogram (ECG) reading. The heart rate is calculated based on the time between successive R-waves (the tall peak in the QRS complex) on the ECG strip. R-R Interval (seconds): Alternatively, if you know the paper speed and the number of small boxes between R-waves: … Read more

DHL International Rate Calculator Weight (kg): Dimensions (cm – L x W x H): Distance (km): Service Type: Express Worldwide Economy Select Freight Calculate Rate Understanding DHL International Shipping Rates Calculating international shipping costs can seem complex, but services like DHL aim to simplify it. The cost of shipping a package internationally with DHL depends … Read more

Effective Annual Percentage Rate (EAR) Calculator Nominal Annual Interest Rate (%) Number of Compounding Periods per Year Calculate EAR Results function calculateEAR() { var nominalRate = parseFloat(document.getElementById(“nominalRate”).value); var compoundingFrequency = parseFloat(document.getElementById(“compoundingFrequency”).value); var earResultElement = document.getElementById(“earResult”); if (isNaN(nominalRate) || isNaN(compoundingFrequency) || compoundingFrequency <= 0) { earResultElement.textContent = "Please enter valid numbers for all fields. Compounding frequency … Read more

Daily Protein Intake Calculator Calculate your recommended daily protein intake based on your weight and activity level. Protein is essential for muscle repair, growth, and overall bodily functions. This calculator helps you determine a personalized target to support your fitness goals and health. Your Weight (in kg): Activity Level: Sedentary (little to no exercise) Lightly … Read more

Creatinine Clearance Calculator (Cockcroft-Gault Formula) Weight (kg): Age (years): Serum Creatinine (mg/dL): Gender: Male Female Calculate Creatinine Clearance What is Creatinine Clearance? Creatinine clearance is a measure of how well your kidneys are functioning. It estimates the rate at which creatinine, a waste product from muscle metabolism, is filtered from your blood by your kidneys. … Read more

Simple Interest Calculator Principal Amount ($): Annual Interest Rate (%): Time Period (Years): Calculate Simple Interest .calculator-container { font-family: sans-serif; max-width: 500px; margin: 20px auto; padding: 20px; border: 1px solid #ccc; border-radius: 8px; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); } .calculator-form { display: grid; gap: 15px; } .form-group { display: flex; flex-direction: column; … Read more

Serum Creatinine (mg/dL): Age (years): Gender: Male Female Race: African American Other Calculate eGFR Estimated Glomerular Filtration Rate (eGFR) function calculateGFR() { var serumCreatinine = parseFloat(document.getElementById(“serumCreatinine”).value); var age = parseInt(document.getElementById(“age”).value); var gender = document.getElementById(“gender”).value; var race = document.getElementById(“race”).value; var eGFR = 0; var interpretation = “”; if (isNaN(serumCreatinine) || isNaN(age) || serumCreatinine <= 0 || … Read more

Retirement Savings Calculator Current Savings: Annual Contributions: Expected Annual Return (%): Years to Retirement: Calculate Your projected retirement savings will appear here. Understanding Your Retirement Savings Potential Planning for retirement is a crucial aspect of long-term financial health. The earlier you start and the more consistently you save, the greater your potential for a comfortable … Read more

ECG Heart Rate Calculator This calculator helps determine your heart rate from an Electrocardiogram (ECG or EKG) by analyzing the R-R intervals. R-R Interval (seconds): Calculate Heart Rate Understanding ECG Heart Rate Calculation An electrocardiogram (ECG) is a medical test that records the electrical activity of the heart. One of the key pieces of information … Read more

Reaction Rate Calculator This calculator helps determine the rate of a chemical reaction based on changes in concentration over time. Initial Concentration (M): Final Concentration (M): Time Interval (s): Calculate Rate #reaction-rate-calculator { font-family: sans-serif; padding: 20px; border: 1px solid #ccc; border-radius: 8px; max-width: 400px; margin: 20px auto; background-color: #f9f9f9; } .form-group { margin-bottom: 15px; … Read more