Calculate total calories burned across running, cycling, weightlifting, swimming, and hundreds of daily activities using scientific MET values.
Calculate total calories burned across running, cycling, weightlifting, swimming, and hundreds of daily activities using scientific...
Calculate the exact calories burned during workouts, sports, running, gym exercises, and daily activities based on Ainsworth's Compendium of Physical Activities (METs) and body mass.
Net calories represent the extra energy expended exclusively from exercise above your resting baseline BMR.
Your 515 kcal workout is equivalent to burning off:
See how your current workout compares to other popular fitness activities at your body weight:
Physical energy expenditure is calculated using the Metabolic Equivalent of Task (MET) framework published in the landmark Compendium of Physical Activities (Ainsworth et al.).
1 MET is defined as the rate of energy expenditure while sitting quietly at rest, corresponding to approximately $1.0\text{ kcal per kilogram of body weight per hour}$ (or $3.5\text{ mL of Oxygen per kg per minute}$).
The formula used by exercise physiologists is:
It is important to understand the difference between Gross Calories and Net Calories:
Moving a larger body mass requires more mechanical work against gravity and friction. A 90 kg individual will burn significantly more calories running a mile than a 60 kg individual at the same pace.
High-Intensity Interval Training (HIIT) and heavy resistance training trigger Excess Post-Exercise Oxygen Consumption (EPOC / "afterburn effect"), elevating metabolic rate for hours post-workout.
Exercises recruiting large compound muscle groups (squats, deadlifts, rowing, sprinting) demand immense ATP turnover and oxygen uptake compared to isolation movements.
Cardio machines (treadmills, ellipticals) often overestimate calorie burn by 15% to 30% because they frequently use generalized averages without accounting for individual body composition or grip support. MET-based formulas calibrated to accurate body weight provide a reliable clinical benchmark.
One pound of stored adipose body fat contains approximately 3,500 kcal (roughly 7,700 kcal per kilogram). Creating a cumulative 3,500 kcal deficit through exercise and nutrition results in approximately 1 lb of pure fat loss.
Yes. Lean muscle tissue is metabolically active, burning roughly 13 kcal/kg per day at rest compared to ~4.5 kcal/kg for fat tissue. Building muscle elevates resting metabolic rate (BMR) around the clock.
A Calorie Burn Calculator quantifies the total kinetic and biological energy your body expends while engaging in physical activity. Whether running outside, lifting weights in the gym, swimming laps, or performing routine house cleaning, your muscles convert chemical energy (ATP) into movement and heat.
Energy expenditure during exercise is standardized using MET (Metabolic Equivalent of Task) values published in the Compendium of Physical Activities:
$$1\text{ MET} = 3.5\text{ mL } O_2 / \text{kg} / \text{min} \approx 1\text{ kcal} / \text{kg} / \text{hour}$$
The fundamental calculation for total exercise calorie burn is:
$$\text{Total Calories Burned (kcal)} = \text{MET} \times \text{Weight (kg)} \times \text{Time (hours)}$$
$$\text{Or per minute: } \text{Calories/min} = \frac{\text{MET} \times 3.5 \times \text{Weight (kg)}}{200}$$
Representative MET values for common physical activities include:
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Estimating exercise calorie burn accurately requires understanding exercise intensity indices and post-exercise oxygen consumption:
Utilizes the Compendium of Physical Activities covering hundreds of sports, workouts, and chores.
Scales energy expenditure precisely to your exact current body weight in kg or lbs.
Accounts for exercise intensity levels from light strolls to high-intensity interval training (HIIT).
Distinguishes between total calories burned and the extra calories burned above resting metabolic rate.
Track workout expenditures instantly in your browser without syncing to third-party fitness trackers.