Calories Burned Calculator
How many calories do you burn in a workout session?
About Calories Burned Calculator
This calculator estimates exercise energy expenditure using MET (Metabolic Equivalent of Task), the most widely used open standard for activity intensity. One MET represents resting energy cost. Higher MET values indicate higher intensity and greater calorie burn per minute. We apply the standard MET equation with your body weight and workout duration to estimate total calories burned for the selected activity.
Primary equation: Calories burned = MET x body weight (kg) x duration (hours) Equivalent minute equation: Calories burned = (MET x 3.5 x body weight (kg) / 200) x minutes Where: 1 MET = resting metabolic rate
Source: Compendium of Physical Activities (Ainsworth et al., 2011; updated 2024) · WHO Guidelines on Physical Activity and Sedentary Behaviour (2020) · ACSM metabolic equations and MET conventions
Why Exercise Energy Expenditure Matters
Calorie-burn awareness is useful for weight and cardiometabolic health when interpreted correctly. It helps align activity volume with realistic outcomes and supports long-term consistency.
Energy Balance Accuracy
Many people overestimate calories burned during exercise, which can erase fat-loss progress through unintentional overeating. Structured estimates improve planning accuracy.
Cardiometabolic Risk Reduction
Regular moderate-to-vigorous activity improves insulin sensitivity, blood pressure, and lipid profile independent of weight loss. Tracking activity burn can reinforce adherence.
Training Progression
As fitness improves, the same workout can feel easier and expend fewer calories per perceived effort. Monitoring duration and intensity helps maintain progressive overload.
How to Use This Calculator Most Effectively
Use the output as a planning tool, then refine with real-world feedback from body-weight trends, performance, and recovery:
Choose the closest activity intensity
MET values differ by pace and effort. Select the activity option that best matches your true intensity; this has a larger impact than minor weight differences.
Avoid compensatory eating errors
A common mistake is eating back all estimated exercise calories. If fat loss is the goal, use conservative compensation and monitor weekly results before adjusting intake.
Recalculate as body weight changes
The same session burns fewer calories at lower body weight. Recheck estimates every few weeks to keep planning aligned with your current physiology.