Where do the MET numbers used in this calculator come from?

MET values are drawn from standardized activity tables used in exercise physiology and public health research. They represent typical energy costs for different activities at specific intensities. Because individuals vary, treat them as averages, not personalized measurements.

Can I use this calculator for strength training or lifting sessions?

You can approximate calorie burn for strength sessions by choosing a MET value that matches the overall intensity (often in the 3–6 MET range for moderate lifting), but strength work is harder to capture with steady-state METs. Focus more on progressive overload and total work volume than on exact calorie counts for lifting.

How accurate is this compared with my smartwatch or treadmill?

Different devices and formulas can easily disagree by 10–30% or more. This calculator is transparent about the equation it uses, while many devices are not. Treat them all as estimates and pay more attention to long-term trends and consistency than to any single number.

Is this calculator suitable for medical or clinical use?

No. It is intended for general fitness and planning. Medical decisions about energy expenditure, nutrition, or rehabilitation should be based on clinical assessments and guidance from qualified healthcare professionals.

How should I use these calorie estimates in a weight-loss plan?

Use the numbers as a rough guide to understand how much extra energy your workouts might burn, then combine them with consistent nutrition tracking and regular weigh-ins or body-composition checks. Adjust your intake and activity based on multi-week trends rather than trying to “eat back” or match every single estimated exercise calorie.

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Calorie Burn Calculator

Estimate calories burned using weight, workout duration, and activity intensity (MET).

Results

Total calories burned: 485.80
Calories per minute: 10.80
Calories per hour: 647.73

Overview

Plug in your workout duration and intensity to see how many calories you burned. MET values cover popular gym and outdoor activities.

Instead of relying solely on rough guesses from cardio machines or generic “calories burned” charts, this calculator uses a standard MET-based formula that is widely used in exercise science and public health research. You enter your weight, how long you exercised, and the MET value that best matches your activity, and the tool estimates calories per minute, per hour, and for the entire session. That gives you a transparent, repeatable way to compare different workouts and understand the energy cost of your training.

How to use this calculator

Enter body weight in pounds.
Enter workout duration in minutes.
Select an activity intensity (MET) closest to your workout.
We compute calories per minute, per hour, and total calories burned.
Optionally, run the calculation for a few different MET values if your effort varied (for example, alternating easy and hard intervals) and average the results for a blended estimate.

Inputs explained

Body weight: Weight in pounds; we convert to kg internally.
Duration: Workout time in minutes.
Activity intensity (MET): Metabolic equivalent for the activity. Higher MET = higher intensity.

How it works

We convert body weight to kilograms and apply the standard MET formula: Calories/min = MET × 3.5 × weight kg ÷ 200.

Total calories = calories/min × minutes. Calories/hour extrapolates to a 60-minute effort.

Behind the scenes, MET (metabolic equivalent of task) expresses how many times above resting energy expenditure an activity sits. A MET of 1 is resting; 8 means roughly 8× resting energy use.

By combining MET, body weight, and duration, the formula approximates how much chemical energy your body likely used during the activity, which we express in calories.

Formula

The calculator uses a standard MET-based energy expenditure equation:\n\n1. Convert weight to kilograms:\n   weight_kg = weight_lb ÷ 2.20462\n\n2. Estimate calories burned per minute:\n   Calories_per_min = (MET × 3.5 × weight_kg) ÷ 200\n\n3. Compute total session calories:\n   Total_calories = Calories_per_min × duration_minutes\n\n4. Compute calories per hour (at the same intensity):\n   Calories_per_hour = Calories_per_min × 60

When to use it

Estimating calories burned during runs, rides, or gym sessions.
Comparing calorie burn across different activities or intensities.
Planning workouts to match calorie goals.
Checking whether a new training plan meaningfully changes your total weekly or monthly energy expenditure.
Providing a rough cross-check against numbers from wearables or cardio machines, especially when those devices disagree with each other.

Tips & cautions

Pick the MET closest to your actual effort—intensity matters more than the activity label.
Heavier weights and higher METs burn more calories per minute.
For mixed workouts, average the METs or split the session into segments.
Treat estimates as directional, not exact; metabolism, technique, and fitness level all influence true energy use.
Use longer-term trends (weekly or monthly totals) rather than single-workout numbers when making nutrition or training decisions.
If you are using these estimates alongside a calorie-tracking app, avoid adjusting food intake up or down based on every small workout variation; instead, fine-tune based on multi-week weight or body-composition trends.
Remember that non-exercise activity—like walking during the day, taking stairs, and doing household tasks—can add significant calorie burn over time. Use structured workouts and everyday movement together when thinking about your total daily energy expenditure.
If you are new to exercise or returning after time off, focus first on building a consistent routine and appropriate intensity rather than chasing a specific calorie number. Once your training is stable, you can use this calculator to compare sessions and fine-tune your weekly energy output.
MET values are generalized; individual burn varies with age, body composition, and efficiency.
Does not include post-exercise afterburn (EPOC).
Uses weight in pounds; convert if needed for accuracy.
Does not account for breaks, variations in effort, or very short, high-intensity bursts where MET estimates become less precise.

Worked examples

Example 1: 45-minute jog (170 lb person, MET 8)

Convert weight: 170 lb ÷ 2.20462 ≈ 77.1 kg.
Calories per minute ≈ (8 × 3.5 × 77.1) ÷ 200 ≈ 10.8 calories/min.
Total calories ≈ 10.8 × 45 ≈ 486 calories.
Calories per hour ≈ 10.8 × 60 ≈ 648 calories/hour.

Example 2: 30-minute HIIT circuit (150 lb person, MET 10)

Convert weight: 150 lb ÷ 2.20462 ≈ 68.0 kg.
Calories per minute ≈ (10 × 3.5 × 68.0) ÷ 200 ≈ 11.9 calories/min.
Total calories ≈ 11.9 × 30 ≈ 357 calories.
Calories per hour ≈ 11.9 × 60 ≈ 714 calories/hour (extrapolated).

Example 3: 60-minute brisk walk (190 lb person, MET 3.5)

Convert weight: 190 lb ÷ 2.20462 ≈ 86.2 kg.
Calories per minute ≈ (3.5 × 3.5 × 86.2) ÷ 200 ≈ 5.3 calories/min.
Total calories ≈ 5.3 × 60 ≈ 318 calories.
Interpretation: even moderate-intensity walking adds up over time, especially when done consistently.

Deep dive

This calorie burn calculator estimates calories per minute, per hour, and total calories burned from your weight, workout duration, and activity intensity in METs. Enter your body weight, session length, and a MET that matches your activity to see how much energy you likely expended.

Use the tool to compare different workouts, plan sessions around calorie goals, or double-check numbers from fitness trackers and cardio machines. Because it relies on standard MET formulas, it gives a transparent, research-based reference point rather than a black-box estimate.

Calorie burn is only one piece of the training puzzle—sleep, recovery, strength work, and nutrition all matter too—but understanding the basic math behind workout energy expenditure can make it easier to design and adjust a program that fits your goals.

FAQs

Where do the MET numbers used in this calculator come from?: MET values are drawn from standardized activity tables used in exercise physiology and public health research. They represent typical energy costs for different activities at specific intensities. Because individuals vary, treat them as averages, not personalized measurements.
Can I use this calculator for strength training or lifting sessions?: You can approximate calorie burn for strength sessions by choosing a MET value that matches the overall intensity (often in the 3–6 MET range for moderate lifting), but strength work is harder to capture with steady-state METs. Focus more on progressive overload and total work volume than on exact calorie counts for lifting.
How accurate is this compared with my smartwatch or treadmill?: Different devices and formulas can easily disagree by 10–30% or more. This calculator is transparent about the equation it uses, while many devices are not. Treat them all as estimates and pay more attention to long-term trends and consistency than to any single number.
Is this calculator suitable for medical or clinical use?: No. It is intended for general fitness and planning. Medical decisions about energy expenditure, nutrition, or rehabilitation should be based on clinical assessments and guidance from qualified healthcare professionals.
How should I use these calorie estimates in a weight-loss plan?: Use the numbers as a rough guide to understand how much extra energy your workouts might burn, then combine them with consistent nutrition tracking and regular weigh-ins or body-composition checks. Adjust your intake and activity based on multi-week trends rather than trying to “eat back” or match every single estimated exercise calorie.

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This calorie burn calculator provides approximate energy-expenditure estimates based on standard MET formulas and user-supplied weight, duration, and intensity. It does not account for genetics, body composition, hormone status, environmental conditions, or training adaptations, and it is not a medical device. Do not use it for diagnosis, treatment decisions, or precise nutrition or dosing. Always consult a doctor, registered dietitian, or qualified coach for personalized exercise and nutrition guidance, especially if you have underlying health conditions or are following a medically supervised program.