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Calorie Burn Calculator

Estimate calories burned during a workout using the MET formula.

Runs in your browserNot yet verified
Browser-based

Based on the MET formula: kcal = MET × 3.5 × weight(kg) ÷ 200 × minutes.

Built with browser-native APIsRuns locally — nothing is uploaded

What is Calorie Burn Calculator?

The Calorie Burn Calculator is an open-source tool designed to estimate the number of calories burned during physical activities such as walking, running, or cycling. It provides users with an approximate measurement based on factors like activity duration, distance, and personal metrics such as age, weight, and sex. This tool is primarily used by individuals seeking to track their energy expenditure for fitness goals, weight management, or general health awareness. It addresses the challenge of quantifying calorie burn, which is inherently variable due to differences in body composition, metabolism, and activity intensity. By offering standardized estimates, the calculator helps users make informed decisions about their exercise routines and dietary needs.

How it works

The Calorie Burn Calculator is an interactive browser tool that estimates calories burned during specific activities. It uses standardized data to calculate energy expenditure based on user inputs like activity type, duration, or distance. Its primary purpose is to assist users in understanding how much energy their body consumes during physical exertion, enabling better planning for exercise and nutrition. The tool includes two main calculators: one for estimating calories burned by activity duration or distance (specifically for walking, running, or cycling), and another for calculating daily calorie burn based on basal metabolic rate (BMR), activity level, and body composition. It also provides estimates for maintenance and goal-based calorie intake.

How to use it

  1. 1Input personal data such as age, weight, height, and sex. 2. Select the activity type (e.g., walking, running) and specify duration or distance. 3. Enter body fat percentage if available. 4. Choose activity level (sedentary to extra active) to refine estimates. 5. Review calculated values for daily burn, BMR, and activity-specific calories. Practical tips: Use the daily burn calculator for long-term tracking, and the activity-specific tool for short-term exercise planning. Always consider that results are estimates based on average data.

What it can do

  • Calorie Burn Calculator

Use cases

Assumptions and limitations

Assumptions

  • source: Free fitness tools tool
  • license: Open source
  • privacy: Runs locally in your browser

Limitations

  • Results are estimates based on average data, not personalized physiology
  • Does not account for individual variations in metabolism or muscle mass
  • Limited to predefined activities (walking, running, cycling)
  • No real-time data or integration with wearable devices
  • Does not provide medical or nutritional advice

Understanding the result

Estimate calories burned during a workout using the MET formula.

Tool details

  • Processing happens entirely in your browser.
  • No account, no sign-up, and no tracking of your content.
Runs locally
Yes — nothing is uploaded
Verification
Not yet verified
Input
Weight, Duration, Intensity
Output
Calories Burned

Frequently asked

How does the Calorie Burn Calculator estimate calorie burn?

The calculator uses standardized formulas and average data to estimate calorie burn. For activities like walking or running, it calculates based on duration or distance, while the daily burn tool uses BMR, activity level, and body composition. Results are approximate and not tailored to individual biology.

What formulas are used for calorie calculations?

The tool likely employs formulas like the Mifflin-St Jeor equation for BMR and activity multipliers (e.g., 1.2 for sedentary, 1.9 for extra active) to estimate total daily energy expenditure. These are industry-standard methods but rely on generalized data.

How do I calculate calories burned for a specific workout?

Select the activity type (e.g., running), input duration or distance, and provide personal metrics like weight and age. The tool will estimate calories burned based on average metabolic rates for that activity. For example, a 150-pound person running 5 miles might burn approximately 600 calories.

How does this tool compare to fitness trackers?

Unlike fitness trackers, this tool does not use real-time data or individualized sensors. It provides estimates based on formulas, while trackers use movement sensors and heart rate data for more precise, personalized readings.

What should I do if my results seem inaccurate?

Ensure all inputs are accurate and consider that the tool uses average data. For more precise results, consult a fitness professional or use devices with direct physiological monitoring. Avoid relying on this tool for medical decisions.

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