How Far Should I Walk to Lose Weight Calculator

How Far Should I Walk to Lose Weight Calculator | Calculate Your Walking Distance for Weight Loss :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –shadow-color: rgba(0, 0, 0, 0.1); –card-background: #fff; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; } .container { width: 95%; max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } header { background-color: var(–primary-color); color: white; padding: 20px 0; text-align: center; width: 100%; margin-bottom: 20px; } header h1 { margin: 0; font-size: 2.2em; } h2, h3 { color: var(–primary-color); margin-top: 1.5em; margin-bottom: 0.5em; } .calc-section { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); margin-bottom: 30px; } .loan-calc-container { display: flex; flex-direction: column; gap: 15px; } .input-group { display: flex; flex-direction: column; gap: 8px; } .input-group label { font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { padding: 12px; border: 1px solid var(–border-color); border-radius: 5px; font-size: 1em; box-sizing: border-box; /* Important for consistent sizing */ } .input-group input[type="number"]:focus, .input-group select:focus { outline: none; border-color: var(–primary-color); box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2); } .input-group .helper-text { font-size: 0.85em; color: #666; } .error-message { color: red; font-size: 0.9em; margin-top: 5px; display: none; /* Hidden by default */ } .btn-group { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; /* Allow wrapping on smaller screens */ } button { padding: 12px 20px; border: none; border-radius: 5px; font-size: 1em; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; font-weight: bold; } button.primary { background-color: var(–primary-color); color: white; } button.primary:hover { background-color: #003a7a; transform: translateY(-2px); } button.secondary { background-color: #6c757d; color: white; } button.secondary:hover { background-color: #5a6268; transform: translateY(-2px); } button.success { background-color: var(–success-color); color: white; } button.success:hover { background-color: #218838; transform: translateY(-2px); } #results { margin-top: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–primary-color); color: white; text-align: center; box-shadow: inset 0 0 15px var(–shadow-color); } #results h3 { color: white; margin-bottom: 15px; font-size: 1.6em; } #primary-result { font-size: 2.5em; font-weight: bold; color: var(–success-color); margin-bottom: 15px; display: block; /* Ensure it takes full width */ } .results-list { list-style: none; padding: 0; margin: 15px 0; display: flex; flex-direction: column; gap: 10px; } .results-list li { font-size: 1.1em; display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px dashed rgba(255,255,255,0.3); } .results-list li:last-child { border-bottom: none; } .results-list span { font-weight: bold; } .results-list .label { text-align: left; } .results-list .value { text-align: right; color: var(–success-color); } #formula-explanation { font-size: 0.95em; color: rgba(255, 255, 255, 0.9); margin-top: 15px; border-top: 1px dashed rgba(255,255,255,0.3); padding-top: 10px; } .chart-container { margin-top: 30px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); box-shadow: 0 2px 10px var(–shadow-color); } .chart-container h3 { text-align: center; margin-bottom: 20px; } canvas { display: block; margin: 0 auto; max-width: 100%; height: auto !important; /* Ensure canvas scales properly */ } .table-container { margin-top: 30px; overflow-x: auto; /* For responsiveness */ } table { width: 100%; border-collapse: collapse; margin-top: 15px; box-shadow: 0 2px 10px var(–shadow-color); } thead { background-color: var(–primary-color); color: white; } th, td { padding: 12px 15px; text-align: left; border: 1px solid var(–border-color); } th { font-weight: bold; } tbody tr:nth-child(even) { background-color: #f2f2f2; } tbody td { font-size: 0.95em; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } .article-content { background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); margin-top: 30px; text-align: left; } .article-content h2, .article-content h3 { text-align: left; margin-top: 1.8em; } .article-content p { margin-bottom: 1.2em; } .article-content ul, .article-content ol { margin-left: 20px; margin-bottom: 1.2em; } .article-content li { margin-bottom: 0.6em; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-list { list-style: none; padding: 0; } .faq-list li { margin-bottom: 1.5em; border-bottom: 1px dashed var(–border-color); padding-bottom: 1em; } .faq-list li:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; } .faq-list strong { display: block; color: var(–primary-color); margin-bottom: 0.5em; font-size: 1.1em; } .variable-table { width: 100%; border-collapse: collapse; margin-top: 15px; box-shadow: 0 2px 10px var(–shadow-color); } .variable-table th, .variable-table td { padding: 10px 12px; text-align: left; border: 1px solid var(–border-color); } .variable-table th { background-color: var(–primary-color); color: white; } .variable-table tbody tr:nth-child(even) { background-color: #f2f2f2; } .related-links { list-style: none; padding: 0; } .related-links li { margin-bottom: 1em; } .related-links a { font-weight: bold; } .related-links span { font-size: 0.9em; color: #555; display: block; margin-top: 0.3em; } footer { text-align: center; padding: 20px; margin-top: 40px; width: 100%; font-size: 0.9em; color: #666; } /* Responsive adjustments */ @media (min-width: 768px) { .btn-group { justify-content: flex-start; /* Align buttons left on larger screens */ } } @media (max-width: 480px) { header h1 { font-size: 1.8em; } .container { padding: 15px; } button { width: 100%; /* Full width buttons on small screens */ } .btn-group { flex-direction: column; } #primary-result { font-size: 2em; } th, td { padding: 8px 10px; font-size: 0.9em; } }

How Far Should I Walk to Lose Weight Calculator

Your Walking Weight Loss Planner

Calculate the distance you need to walk to burn a specific number of calories for weight loss. Enter your details and see how far you need to go!

Enter your weight in kilograms (kg).
How many kilograms you aim to lose.
Slow (4 km/h) Moderate (5 km/h) Brisk (6 km/h) Select your typical walking pace.
Flat Ground (e.g., pavement) Slight Inclines (e.g., gentle hills) Steep Inclines (e.g., very hilly terrain) Affects calorie burn; flatter surfaces burn fewer calories.
Metabolic Equivalent of Task. Walking typically ranges from 2.0 to 7.0. 3.5 is average.

Your Weight Loss Journey Insights

  • Total Calories to Burn:
  • Calories Burned Per Hour:
  • Estimated Walking Time (Hours):
  • Estimated Walking Time (Minutes):

Calories Burned vs. Walking Distance

This chart shows the relationship between walking distance and calories burned for your inputs.

Walking Pace & Calorie Burn Comparison
Pace MET Value (Avg.) Estimated Calories Burned Per Hour (for kg) Distance Covered Per Hour ( km/h)
Enter your details to see comparisons.

What is the How Far Should I Walk to Lose Weight Calculator?

The how far should i walk to lose weight calculator is a specialized tool designed to help individuals quantify the walking distance required to achieve a specific weight loss target by burning a corresponding amount of calories. It bridges the gap between the desire to lose weight and the actionable steps needed to do so, specifically through the act of walking. This calculator helps users understand that weight loss is fundamentally a matter of energy balance: consuming fewer calories than the body expends. Walking is a highly accessible form of exercise, and by using this calculator, users can personalize their fitness goals based on their current weight, desired loss, and walking intensity.

Who should use it? Anyone looking to lose weight through walking, from beginners to experienced walkers, can benefit. It's particularly useful for individuals who prefer low-impact exercise or need a clear, quantitative target for their daily or weekly walking routines. It can also help set realistic expectations regarding the time and distance involved in achieving weight loss goals.

Common misconceptions:

  • "Walking alone is enough for rapid weight loss." While walking is effective, diet plays a crucial role. This calculator focuses on the expenditure side; a calorie deficit is needed from both diet and exercise.
  • "All walking burns the same calories." Intensity, speed, terrain, and individual metabolism significantly affect calorie burn. This calculator accounts for some of these variables.
  • "You need to walk for hours every day." The calculator shows that even moderate distances, consistently achieved, can contribute significantly to a calorie deficit.

How Far Should I Walk to Lose Weight Calculator Formula and Mathematical Explanation

The core principle behind the how far should i walk to lose weight calculator is the relationship between body weight, activity intensity, duration, and calorie expenditure. To determine how far one should walk, we first calculate the total calories needed to be burned for the desired weight loss, and then estimate the walking distance required to achieve that burn rate.

Step-by-Step Calculation:

  1. Target Calories to Burn: One kilogram of body fat is approximately equivalent to 7,700 kilocalories (kcal). Therefore, to lose a target weight in kilograms, you multiply that weight by 7,700.
    Formula: Total Calories to Burn = Target Weight Loss (kg) × 7700 kcal/kg
  2. Calories Burned Per Minute: We use the Metabolic Equivalent of Task (MET) system to estimate calorie expenditure. The formula for calories burned per minute is:
    Formula: Calories/minute = (MET Value × Body Weight (kg) × 3.5) / 200
    Note: The '3.5' represents the resting metabolic rate (1 MET) in ml/kg/min, and dividing by 200 converts this to kcal per minute. The 'walking surface' factor is applied here to adjust the MET value effectively.
  3. Calories Burned Per Hour: Multiply calories burned per minute by 60.
    Formula: Calories/hour = Calories/minute × 60
  4. Walking Time Required (Hours): Divide the total calories to burn by the calories burned per hour.
    Formula: Walking Time (hours) = Total Calories to Burn / Calories/hour
  5. Required Walking Distance: Multiply the walking time in hours by the user's average walking speed.
    Formula: Distance (km) = Walking Time (hours) × Walking Speed (km/h)

Variable Explanations

Understanding the variables is key to using the calculator effectively:

Variable Meaning Unit Typical Range / Input
Your Current Weight The user's body weight. Crucial for calculating calorie expenditure per unit of activity. kg e.g., 50 – 150+ kg
Target Weight Loss The desired amount of weight to lose. Determines the total calorie deficit needed. kg e.g., 0.5 – 10+ kg
Average Walking Speed The user's typical pace while walking. Directly impacts distance covered over time. km/h Slow (3-4), Moderate (5-6), Brisk (6+)
Walking Surface The type of terrain being walked on. Impacts perceived effort and actual calorie burn. Factor (decimal) Flat (1.0), Slight Incline (0.8), Steep Incline (0.7)
MET Value (Activity Intensity) Metabolic Equivalent of Task. A measure of the energy cost of physical activity relative to resting metabolic rate. Higher METs mean more calories burned. Unitless Walking: 2.0 – 7.0 (e.g., 3.5 avg)
Calories per Minute Estimated caloric energy expenditure per minute of walking, adjusted for weight and METs. kcal/min Calculated
Calories per Hour Total calories burned during one hour of walking at the specified intensity and pace. kcal/hour Calculated
Total Calories to Burn The cumulative caloric deficit required to achieve the target weight loss. kcal Calculated (Target Weight Loss × 7700)
Walking Time (Hours) The duration of walking needed to burn the target number of calories. Hours Calculated
Required Walking Distance The total distance to cover to burn the target calories. This is the primary output. km Calculated

Practical Examples (Real-World Use Cases)

Example 1: Moderate Weight Loss Goal

Scenario: Sarah weighs 75 kg and wants to lose 2 kg. She typically walks at a moderate pace (5 km/h) on flat pavement and uses an average MET value of 3.5.

Inputs:

  • Current Weight: 75 kg
  • Target Weight Loss: 2 kg
  • Walking Speed: 5 km/h
  • Walking Surface: Flat Ground (1.0)
  • MET Value: 3.5

Calculations:

  • Total Calories to Burn = 2 kg × 7700 kcal/kg = 15,400 kcal
  • Calories Burned Per Minute = (3.5 METs × 75 kg × 3.5) / 200 ≈ 4.6 kcal/min
  • Calories Burned Per Hour = 4.6 kcal/min × 60 min/hour ≈ 276 kcal/hour
  • Estimated Walking Time (Hours) = 15,400 kcal / 276 kcal/hour ≈ 55.8 hours
  • Estimated Walking Distance = 55.8 hours × 5 km/h ≈ 279 km

Interpretation: Sarah needs to walk approximately 279 km to lose 2 kg, assuming these parameters remain constant. This distance could be spread over several weeks or months, emphasizing consistency.

Example 2: Smaller Weight Loss Goal with Brisk Walking

Scenario: John weighs 90 kg and aims to lose 1 kg. He prefers brisk walking (6 km/h) and is conscious of walking on slightly hilly terrain (surface factor 0.8), using a MET value of 4.0 for higher intensity.

Inputs:

  • Current Weight: 90 kg
  • Target Weight Loss: 1 kg
  • Walking Speed: 6 km/h
  • Walking Surface: Slight Incline (0.8)
  • MET Value: 4.0

Calculations:

  • Total Calories to Burn = 1 kg × 7700 kcal/kg = 7,700 kcal
  • Effective MET = 4.0 METs × 0.8 (surface factor) = 3.2
  • Calories Burned Per Minute = (3.2 METs × 90 kg × 3.5) / 200 ≈ 5.0 kcal/min
  • Calories Burned Per Hour = 5.0 kcal/min × 60 min/hour ≈ 300 kcal/hour
  • Estimated Walking Time (Hours) = 7,700 kcal / 300 kcal/hour ≈ 25.7 hours
  • Estimated Walking Distance = 25.7 hours × 6 km/h ≈ 154 km

Interpretation: John needs to walk about 154 km to lose 1 kg. By increasing his pace and accounting for terrain, he can achieve the same weight loss with a significantly shorter distance compared to Sarah's scenario.

How to Use This How Far Should I Walk to Lose Weight Calculator

Using the how far should i walk to lose weight calculator is straightforward. Follow these steps to get personalized results:

  1. Enter Your Current Weight: Input your body weight in kilograms (kg). This is a primary factor in determining how many calories you burn per unit of activity.
  2. Specify Target Weight Loss: Enter the amount of weight you aim to lose in kilograms (kg). Remember that 1 kg of fat is roughly 7,700 kcal.
  3. Select Your Walking Speed: Choose your average walking pace from the dropdown menu (Slow, Moderate, Brisk). This affects how far you travel in a given time.
  4. Choose Walking Surface: Select the type of terrain you usually walk on. Flatter surfaces require less energy than inclines.
  5. Adjust MET Value: The MET (Metabolic Equivalent of Task) value represents the intensity of your walk. The default is 3.5 for moderate walking, but you can adjust it if you know your walk is typically more or less intense. Higher MET values mean more calories burned per minute.
  6. Click "Calculate Distance": The calculator will instantly display your results.

How to Read Results:

  • Primary Result (Highlighted): This shows the total estimated walking distance (in kilometers) you need to cover to achieve your target weight loss.
  • Total Calories to Burn: The total number of calories you need to expend.
  • Calories Burned Per Hour: An estimate of how many calories you burn during one hour of walking under your specified conditions.
  • Estimated Walking Time: Breaks down the required duration into both hours and minutes.

Decision-Making Guidance:

Use these results to set realistic goals. For instance, if your target distance seems daunting, consider:

  • Increasing Walking Frequency: Break the total distance into smaller, manageable daily or weekly goals.
  • Increasing Walking Intensity: Walk faster, incorporate hills, or add interval training.
  • Adjusting Diet: Remember that combining walking with dietary changes can accelerate weight loss. A calorie deficit is essential.

Key Factors That Affect How Far Should I Walk to Lose Weight Results

While the how far should i walk to lose weight calculator provides a solid estimate, several real-world factors can influence your actual results:

  1. Body Composition: Muscle burns more calories at rest than fat. An individual with a higher muscle mass may burn more calories than someone of the same weight with a higher body fat percentage, even while walking the same distance.
  2. Metabolic Rate Variation: Basal Metabolic Rate (BMR) differs between individuals due to genetics, age, and hormonal factors. A naturally higher BMR means more calories burned overall, potentially reducing the required walking distance slightly.
  3. Environmental Conditions: Walking in extreme heat or cold, against a strong wind, or on soft surfaces like sand requires more energy, thus increasing calorie burn beyond the standard calculations.
  4. Fitness Level and Efficiency: As you become fitter, your body becomes more efficient at performing activities. This means you might burn slightly fewer calories for the same walk over time compared to when you first started.
  5. Walking Technique and Posture: Poor posture or inefficient arm/leg movements can reduce the effectiveness of your walk and lower calorie expenditure.
  6. Non-Exercise Activity Thermogenesis (NEAT): This refers to the calories burned from daily activities outside of structured exercise, like fidgeting, walking around the office, or standing. Higher NEAT can contribute to a larger overall calorie deficit, potentially reducing the specific distance needed from dedicated walks.
  7. Dietary Intake: The calculator focuses solely on calorie expenditure. However, weight loss is achieved through a net calorie deficit. If dietary intake remains high, even extensive walking might not lead to significant weight loss. Sustainable healthy eating habits are crucial.
  8. Hydration and Nutrition: Proper hydration and nutrition support optimal physical performance. Dehydration or lack of essential nutrients can impair your ability to walk for extended periods or at higher intensities, indirectly affecting your progress.

Frequently Asked Questions (FAQ)

  • Q1: How many calories are in one kilogram of fat? A1: It is widely accepted that one kilogram of body fat is equivalent to approximately 7,700 kilocalories (kcal). This is the fundamental conversion used to calculate the total energy expenditure needed for a specific weight loss target.
  • Q2: Is walking enough to lose weight? A2: Walking can be a very effective component of a weight loss strategy, especially when combined with a calorie-controlled diet. While this calculator helps determine the distance for calorie expenditure, a sustainable calorie deficit is key, achieved through both reduced intake and increased output.
  • Q3: How often should I walk to lose weight? A3: Consistency is more important than frequency for many. The calculator provides a total distance. You can break this down into daily, weekly, or bi-weekly goals based on your lifestyle. For significant health benefits and weight management, aiming for at least 150 minutes of moderate-intensity aerobic activity per week is recommended.
  • Q4: Does walking faster burn more calories? A4: Yes, walking faster increases the intensity of the activity. Higher intensity generally means a higher MET value and thus more calories burned per minute or hour, assuming other factors like weight remain constant. Our calculator allows you to select different speeds.
  • Q5: Does terrain really make a difference in calorie burn? A5: Absolutely. Walking uphill or on uneven surfaces requires more muscular effort and energy expenditure compared to walking on a flat, even surface. The calculator accounts for this with the 'Walking Surface' factor, where inclines reduce the effective calorie burn rate per distance covered.
  • Q6: What is a good MET value for walking? A6: The MET value for walking typically ranges from 2.0 (very slow, leisurely pace) to 7.0 (very brisk pace, race walking). A moderate pace of around 5 km/h generally corresponds to a MET value of about 3.5. Brisk walking can push this to 5.0 or higher. Adjusting this value reflects the true intensity of your walk.
  • Q7: How accurate is this calculator? A7: The calculator provides an estimate based on established physiological formulas. Individual results can vary due to differences in metabolism, body composition, fitness level, and the precise accuracy of input parameters like MET value and speed. It serves as an excellent guide, not an exact prediction.
  • Q8: Can I use this calculator if I have existing health conditions? A8: While this calculator is a helpful tool for planning, it is always recommended to consult with a healthcare professional or a certified fitness trainer before starting any new exercise program, especially if you have pre-existing health conditions. They can provide personalized advice tailored to your specific needs and physical limitations. For more tailored fitness plans, consider consulting fitness experts.

Related Tools and Internal Resources

© 2023 Your Website Name. All rights reserved.

var weightInput = document.getElementById('weight'); var weightLossGoalKgInput = document.getElementById('weightLossGoalKg'); var walkingSpeedSelect = document.getElementById('walkingSpeed'); var walkingSurfaceSelect = document.getElementById('walkingSurface'); var METValueInput = document.getElementById('METValue'); var weightErrorDiv = document.getElementById('weightError'); var weightLossGoalKgErrorDiv = document.getElementById('weightLossGoalKgError'); var METValueErrorDiv = document.getElementById('METValueError'); var primaryResultSpan = document.getElementById('primary-result'); var totalCaloriesToBurnSpan = document.getElementById('totalCaloriesToBurn'); var caloriesBurnedPerHourSpan = document.getElementById('caloriesBurnedPerHour'); var walkingTimeHoursSpan = document.getElementById('walkingTimeHours'); var walkingTimeMinutesSpan = document.getElementById('walkingTimeMinutes'); var formulaExplanationDiv = document.getElementById('formula-explanation'); var tableWeightSpan = document.getElementById('tableWeight'); var tableSpeedSpan = document.getElementById('tableSpeed'); var comparisonTableBody = document.getElementById('comparisonTableBody'); var chart; var chartContext; var walkingCalorieChartCanvas = document.getElementById('walkingCalorieChart'); var KILOGRAM_FAT_CALORIES = 7700; var CALORIES_PER_MET_MINUTE_PER_KG = 3.5 / 200; // Standard factor for kcal/min per MET per kg function validateInput(inputId, errorId, min, max) { var input = document.getElementById(inputId); var errorDiv = document.getElementById(errorId); var value = parseFloat(input.value); var isValid = true; errorDiv.style.display = 'none'; // Hide error by default input.style.borderColor = '#ddd'; // Reset border color if (isNaN(value) || input.value.trim() === ") { errorDiv.textContent = 'This field is required.'; errorDiv.style.display = 'block'; input.style.borderColor = 'red'; isValid = false; } else if (value max) { errorDiv.textContent = 'Value is too high.'; errorDiv.style.display = 'block'; input.style.borderColor = 'red'; isValid = false; } return isValid; } function calculateWalkingDistance() { var weight = parseFloat(weightInput.value); var weightLossGoalKg = parseFloat(weightLossGoalKgInput.value); var walkingSpeed = parseFloat(walkingSpeedSelect.value); var walkingSurfaceFactor = parseFloat(walkingSurfaceSelect.value); var METValue = parseFloat(METValueInput.value); var weightValid = validateInput('weight', 'weightError', 0); var weightLossGoalKgValid = validateInput('weightLossGoalKg', 'weightLossGoalKgError', 0); var METValueValid = validateInput('METValue', 'METValueError', 2.0, 7.0); // Realistic MET range if (!weightValid || !weightLossGoalKgValid || !METValueValid) { // Clear results if validation fails primaryResultSpan.textContent = '–'; totalCaloriesToBurnSpan.textContent = '–'; caloriesBurnedPerHourSpan.textContent = '–'; walkingTimeHoursSpan.textContent = '–'; walkingTimeMinutesSpan.textContent = '–'; formulaExplanationDiv.textContent = "; return; } var totalCaloriesToBurn = weightLossGoalKg * KILOGRAM_FAT_CALORIES; var effectiveMET = METValue * walkingSurfaceFactor; var caloriesPerMinute = (effectiveMET * weight * CALORIES_PER_MET_MINUTE_PER_KG); var caloriesBurnedPerHour = caloriesPerMinute * 60; var walkingTimeHours = totalCaloriesToBurn / caloriesBurnedPerHour; var walkingDistanceKm = walkingTimeHours * walkingSpeed; primaryResultSpan.textContent = walkingDistanceKm.toFixed(2) + ' km'; totalCaloriesToBurnSpan.textContent = totalCaloriesToBurn.toFixed(0) + ' kcal'; caloriesBurnedPerHourSpan.textContent = caloriesBurnedPerHour.toFixed(1) + ' kcal/hour'; walkingTimeHoursSpan.textContent = walkingTimeHours.toFixed(2) + ' hours'; walkingTimeMinutesSpan.textContent = (walkingTimeHours * 60).toFixed(1) + ' minutes'; formulaExplanationDiv.innerHTML = 'Formula Used:1. Total Calories to Burn = Target Weight Loss (kg) × 7700 kcal/kg.2. Calories Burned Per Hour = ((MET Value × Surface Factor × Weight (kg) × 3.5) / 200) × 60.3. Walking Distance (km) = (Total Calories to Burn / Calories Burned Per Hour) × Walking Speed (km/h).'; // Update table info tableWeightSpan.textContent = weight.toFixed(1); tableSpeedSpan.textContent = walkingSpeed.toFixed(1); updateChart(weight, METValue, walkingSurfaceFactor); updateComparisonTable(weight, walkingSpeed); } function updateComparisonTable(currentWeight, currentSpeed) { var paces = [ { name: "Slow", speed: 4, met: 3.0 }, { name: "Moderate", speed: 5, met: 3.5 }, { name: "Brisk", speed: 6, met: 4.5 } ]; var rows = ""; paces.forEach(function(pace) { var surfaceFactor = parseFloat(walkingSurfaceSelect.value); // Use current selected surface factor var effectiveMET = pace.met * surfaceFactor; var caloriesPerHour = ((effectiveMET * currentWeight * CALORIES_PER_MET_MINUTE_PER_KG) * 60); var distancePerHour = pace.speed; rows += ""; rows += "" + pace.name + " (" + pace.speed + " km/h)"; rows += "" + pace.met + ""; rows += "" + caloriesPerHour.toFixed(0) + " kcal"; rows += "" + distancePerHour.toFixed(1) + " km"; rows += ""; }); comparisonTableBody.innerHTML = rows; } function resetCalculator() { weightInput.value = '70'; weightLossGoalKgInput.value = '1'; walkingSpeedSelect.value = '5'; walkingSurfaceSelect.value = '1'; METValueInput.value = '3.5'; // Clear errors weightErrorDiv.textContent = "; weightErrorDiv.style.display = 'none'; weightInput.style.borderColor = '#ddd'; weightLossGoalKgErrorDiv.textContent = "; weightLossGoalKgErrorDiv.style.display = 'none'; weightLossGoalKgInput.style.borderColor = '#ddd'; METValueErrorDiv.textContent = "; METValueErrorDiv.style.display = 'none'; METValueInput.style.borderColor = '#ddd'; calculateWalkingDistance(); // Recalculate with defaults } function copyResults() { var primaryResult = primaryResultSpan.textContent; var totalCalories = totalCaloriesToBurnSpan.textContent; var caloriesPerHour = caloriesBurnedPerHourSpan.textContent; var timeHours = walkingTimeHoursSpan.textContent; var timeMinutes = walkingTimeMinutesSpan.textContent; var explanation = formulaExplanationDiv.textContent.replace('Formula Used:', 'Key Assumptions:'); // Rephrase for copy var weight = parseFloat(weightInput.value); var weightLossGoalKg = parseFloat(weightLossGoalKgInput.value); var walkingSpeed = parseFloat(walkingSpeedSelect.options[walkingSpeedSelect.selectedIndex].text); var walkingSurface = walkingSurfaceSelect.options[walkingSurfaceSelect.selectedIndex].text; var METValue = parseFloat(METValueInput.value); var resultText = "— Your Walking Weight Loss Results —\n\n"; resultText += "Primary Goal: Walk " + primaryResult + " to lose " + weightLossGoalKg + " kg.\n"; resultText += "Total Calories to Burn: " + totalCalories + "\n"; resultText += "Estimated Calories Burned Per Hour: " + caloriesPerHour + "\n"; resultText += "Estimated Walking Time: " + timeHours + " (" + timeMinutes + ")\n\n"; resultText += "— Key Inputs & Assumptions —\n"; resultText += "Your Weight: " + weight.toFixed(1) + " kg\n"; resultText += "Target Weight Loss: " + weightLossGoalKg + " kg\n"; resultText += "Walking Speed: " + walkingSpeed + "\n"; resultText += "Walking Surface: " + walkingSurface + "\n"; resultText += "Activity Intensity (METs): " + METValue + "\n\n"; resultText += explanation; navigator.clipboard.writeText(resultText).then(function() { // Optionally provide feedback to user var copyButton = document.querySelector('button.success'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; copyButton.style.backgroundColor = 'var(–success-color)'; setTimeout(function() { copyButton.textContent = originalText; copyButton.style.backgroundColor = "; // Reset to default }, 2000); }).catch(function(err) { console.error('Could not copy text: ', err); alert('Failed to copy results. Please copy manually.'); }); } // Charting logic using native Canvas API function initChart() { chartContext = walkingCalorieChartCanvas.getContext('2d'); chart = new Chart(chartContext, { type: 'line', data: { labels: [], // Will be populated by updateChart datasets: [{ label: 'Calories Burned', data: [], // Will be populated by updateChart borderColor: 'var(–primary-color)', backgroundColor: 'rgba(0, 74, 153, 0.2)', fill: true, tension: 0.1 }, { label: 'Target Calorie Burn', data: [], // Will be populated by updateChart borderColor: 'var(–success-color)', borderDash: [5, 5], fill: false }] }, options: { responsive: true, maintainAspectRatio: false, scales: { x: { title: { display: true, labelString: 'Walking Distance (km)' } }, y: { title: { display: true, labelString: 'Calories' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Calories Burned vs. Distance for Weight Loss Goal' } } } }); } function updateChart(currentWeight, METValue, walkingSurfaceFactor) { if (!chart) initChart(); var dataPoints = 10; // Number of points to plot var maxDistance = 20; // Max distance for chart X-axis (can be adjusted) var distanceStep = maxDistance / dataPoints; var labels = []; var caloriesBurnedData = []; var targetCalories = parseFloat(weightLossGoalKgInput.value) * KILOGRAM_FAT_CALORIES; var targetCalorieData = []; var walkingSpeed = parseFloat(walkingSpeedSelect.value); for (var i = 0; i < dataPoints; i++) { var currentDistance = i * distanceStep; labels.push(currentDistance.toFixed(1)); var effectiveMET = METValue * walkingSurfaceFactor; var caloriesPerMinute = (effectiveMET * currentWeight * CALORIES_PER_MET_MINUTE_PER_KG); var caloriesBurnedPerHour = caloriesPerMinute * 60; var hoursWalked = currentDistance / walkingSpeed; var totalCaloriesBurned = hoursWalked * caloriesBurnedPerHour; caloriesBurnedData.push(totalCaloriesBurned); targetCalorieData.push(targetCalories); } chart.data.labels = labels; chart.data.datasets[0].data = caloriesBurnedData; chart.data.datasets[1].data = targetCalorieData; chart.options.plugins.title.text = 'Calories Burned vs. Distance for ' + parseFloat(weightLossGoalKgInput.value) + ' kg Goal'; chart.update(); } // Initial calculation and chart setup on page load document.addEventListener('DOMContentLoaded', function() { resetCalculator(); // Sets default values and performs initial calculation initChart(); // Initialize chart structure updateChart(parseFloat(weightInput.value), parseFloat(METValueInput.value), parseFloat(walkingSurfaceSelect.value)); // Initial chart update }); // Re-calculate and update chart when inputs change var inputs = document.querySelectorAll('.loan-calc-container input, .loan-calc-container select'); inputs.forEach(function(input) { input.addEventListener('input', function() { // Small delay to avoid excessive calculations during typing/rapid changes setTimeout(function() { calculateWalkingDistance(); }, 100); }); });

Leave a Comment