Kcal Burn Calculator

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Kcal Burn Calculator

Walking (Moderate pace, 3 mph) Walking (Vigorous pace, 4 mph) Running (General pace) Running (Fast, 7.5 mph) Cycling (Moderate effort) Cycling (Vigorous effort) Swimming (Laps, moderate) Weight Lifting (General) Circuit Training Yoga / Stretching Hiking (General) Housework / Cleaning

Total Burned

0 kcal

function calculateKcalBurn() { var weight = parseFloat(document.getElementById('kcal_weight').value); var duration = parseFloat(document.getElementById('kcal_duration').value); var metValue = parseFloat(document.getElementById('kcal_activity').value); var resultDiv = document.getElementById('kcal_result_container'); var resultVal = document.getElementById('kcal_result_val'); var summary = document.getElementById('kcal_summary'); if (isNaN(weight) || weight <= 0 || isNaN(duration) || duration <= 0) { alert('Please enter valid positive numbers for weight and duration.'); return; } // Formula: Calories Burned = (MET * 3.5 * weight_kg / 200) * duration_minutes // Standard metabolic equivalent formula var totalBurned = (metValue * 3.5 * weight / 200) * duration; resultVal.innerHTML = Math.round(totalBurned) + " kcal"; resultDiv.style.display = 'block'; var activityName = document.getElementById('kcal_activity').options[document.getElementById('kcal_activity').selectedIndex].text; summary.innerHTML = "Based on your weight of " + weight + "kg and " + duration + " minutes of " + activityName + "."; }

How Does the Kcal Burn Calculator Work?

This calculator uses the Metabolic Equivalent of Task (MET) value to estimate how many calories you burn during specific physical activities. MET is a physiological measure expressing the energy cost of physical activities as a multiple of the resting metabolic rate.

The Science: What is a MET?

One MET is defined as the energy you use while sitting quietly at rest. An activity with a MET value of 5 means you are exerting five times more energy than you would if you were sitting still. The formula used for this calculation is:

Calories = (MET × 3.5 × Weight in kg / 200) × Duration in Minutes

Estimated Kcal Burn Comparison

To give you an idea of how different activities impact your energy expenditure, here is an example of a 70kg (154 lbs) individual performing activities for 30 minutes:

  • 🏃 Running (General): ~368 kcal
  • 🚴 Cycling (Moderate): ~294 kcal
  • 🏊 Swimming (Laps): ~257 kcal
  • 🧘 Yoga: ~92 kcal

Factors Influencing Caloric Burn

While the Kcal Burn Calculator provides a strong estimate, several individual factors can influence your actual results:

  1. Body Composition: Muscle tissue burns more calories at rest and during exercise than fat tissue.
  2. Intensity: The harder you push yourself (higher heart rate), the more calories you burn, even within the same activity category.
  3. Age and Gender: Metabolic rates naturally change with age, and hormonal differences between genders can affect calorie expenditure.
  4. Environmental Factors: Exercising in extreme heat or cold can increase the caloric demand on your body as it works to regulate its internal temperature.

Why Track Your Calorie Burn?

Understanding your energy output is essential for weight management. Whether your goal is weight loss, maintenance, or muscle gain, tracking "calories out" versus "calories in" helps you create the necessary caloric deficit or surplus to reach your targets effectively.

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