It provides a good estimate based on widely accepted MET values and your body weight. However, actual calorie expenditure can vary due to factors like age, gender, muscle mass, fitness level, and exercise intensity. Use it as a guideline, not a precise measurement.

Yes! By knowing how many calories you burn through exercise, you can better manage your daily energy balance. To lose weight, you typically need to create a calorie deficit (burn more than you consume). This tool helps you estimate the exercise part of that equation.

The core MET‑based formula relies on body mass, because heavier individuals expend more energy to move their bodies. Age and gender influence resting metabolic rate but have a smaller effect on exercise calorie burn compared to weight. Including them would add complexity without necessarily improving accuracy for most users.

Activities like running (especially at faster speeds), jumping rope, swimming hard, and high‑intensity interval training (HIIT) top the list. Our calculator includes many such activities; you can sort the results by the hourly burn rate to find the most efficient for your time.

To burn more calories, increase either the duration or the intensity of your workout. Adding intervals (short bursts of very high effort) can significantly raise the average MET for the session. Building muscle through strength training also helps you burn more calories at rest.