Workout Calorie Burn Calculator — MET-Based Estimate

How exercise calorie burn is calculated

Every exercise has a Metabolic Equivalent of Task (MET) value — a number that expresses how much energy that activity demands relative to sitting at rest. The formula is straightforward:

Calories burned = MET × body weight (kg) × duration (hours)

This is the method used in clinical exercise science and physical activity research worldwide, with MET values drawn from the Ainsworth Compendium of Physical Activities [1] — a peer-reviewed database of over 800 activity codes compiled across multiple decades of measurement studies.

The calculator on this page uses Compendium-sourced MET values for eight common exercises. Enter your exercise type, session duration, and body weight to get your estimated calorie burn, then see how all eight exercises compare for the same inputs.

MET values: what they mean in practice

Exercise	MET	Kcal burned (75 kg, 45 min)
Jump Rope	11.8	664
Running (8 km/h)	8.3	467
HIIT / Circuit Training	8.0	450
Cycling (16–19 km/h)	6.8	383
Swimming (laps, moderate)	5.8	326
Walking (5.6 km/h)	4.3	242
Bodyweight Training	3.8	214
Yoga (Hatha)	2.5	141

The MET difference between yoga (2.5) and jump rope (11.8) is nearly fivefold — meaning a 45-minute jump rope session burns roughly as many calories as three hours of yoga for the same person. Understanding these ratios helps you plan workouts that match your calorie and time budget.

Why body weight is the largest variable

Your weight is a direct multiplier in the calorie formula. A person weighing 90 kg burns 20% more calories than a 75 kg person doing the exact same workout at the same intensity. This also means that as you lose weight, your calorie burn per session decreases slightly — a small but real effect to account for when tracking progress over months.

How to use your results

Estimated Calories Burned is your primary output — the projected total for your selected exercise, weight, and duration based on Compendium MET values.

MET Value confirms which activity intensity the calculator used. If you run faster or cycle harder than the speed described in the exercise label, your actual burn will be higher than the estimate.

Burn Rate (kcal/min) tells you how efficiently a given exercise burns calories per unit of time. High-intensity activities like jump rope and HIIT have the highest burn rates, making them efficient for short sessions. Lower-intensity activities like walking and yoga are better suited to longer, more sustainable efforts.

Exercise Comparison Table shows what you would burn doing each exercise for the same duration and body weight, ranked from highest to lowest. Use this when choosing between workout options — especially useful when time is limited and you want the highest calorie return per session.

Connecting calorie burn to your fat-loss plan

Exercise calorie burn is one side of the energy equation. To lose fat, you need your total daily energy expenditure (TDEE) to exceed your calorie intake. Knowing how many calories a workout burns tells you how much it contributes to that gap — but most of your TDEE comes from resting metabolic rate, not exercise alone.

The ACSM recommends accumulating at least 150–250 minutes per week of moderate-intensity physical activity for health maintenance, and 250–300 minutes for progressive weight loss [2]. At MET 6–8 (cycling, swimming, running), that corresponds to approximately 1,200–2,000 additional kcal burned per week from exercise — a meaningful but not dominant contribution to a 500 kcal/day fat-loss deficit.

For a complete picture of your energy balance, use the Calorie Deficit Calculator to find your personalised daily intake target, and the TDEE Calculator to see how your activity level affects your maintenance calories.

Physical activity guidelines for calorie burn targets

The American College of Sports Medicine and American Heart Association recommend that adults accumulate at least 30 minutes of moderate-intensity aerobic exercise on five or more days per week, or 20 minutes of vigorous activity on three or more days [3]. For the exercises in this calculator:

• Moderate intensity (MET 3–6): walking, yoga, bodyweight training, swimming
• Vigorous intensity (MET 6+): running, cycling at pace, HIIT, jump rope

Even the lower-intensity options accumulate meaningful calorie totals over weeks. Five 45-minute walking sessions (75 kg person) produce approximately 1,210 kcal of additional weekly expenditure — comparable to one longer vigorous workout.

Frequently asked questions

How accurate is the calorie burn estimate?

The MET-based formula estimates calorie burn within ±15–20% for most people. Factors including fitness level, terrain gradient, exact pace, and ambient temperature affect actual expenditure. Use the result as a planning benchmark and adjust based on observed weight trends over 2–4 weeks.

What does MET mean?

MET stands for Metabolic Equivalent of Task — a ratio comparing the energy cost of an activity to resting energy expenditure. A MET of 1.0 represents sitting quietly at rest. Running at 8 km/h has a MET of 8.3, meaning it burns 8.3 times the energy of sitting still for the same time period.

Why does body weight affect calorie burn?

Moving a heavier body requires more muscular force and cardiovascular work, so total energy expenditure scales proportionally with mass. A 90 kg person burns roughly 20% more calories than a 75 kg person running at the same speed for the same duration. This is why the MET formula multiplies by weight in kilograms.

Is HIIT or running better for burning calories?

Both have similar MET values — HIIT at 8.0 and running at 8 km/h at 8.3 — so calorie burn is comparable for the same duration and body weight. The practical difference is sustainability: running can often be maintained longer, while HIIT sessions are typically shorter and more intense. HIIT also produces a measurable post-exercise oxygen consumption (EPOC) effect that adds a modest additional burn in the hours after the session.

Can I burn more calories by working out longer or harder?

Both increase total calorie burn independently. Longer duration increases total calories linearly — doubling workout time doubles estimated burn. Higher intensity increases MET, so a faster run or more vigorous HIIT burns more per minute. The most sustainable approach for most people is moderate intensity (MET 5–8) at sufficient duration (30–60 minutes), 3–5 times per week.

How do I use the exercise comparison table?

The comparison table calculates what you would burn doing each of the 8 exercises for the same duration and body weight you entered, sorted from highest to lowest calorie burn. It helps you understand the relative cost of different exercise choices so you can plan workouts that match your calorie and time goals.

Sources

1. Ainsworth BE, Haskell WL, Herrmann SD, Meckes N, Bassett DR Jr, Tudor-Locke C, Greer JL, Vezina J, Whitt-Glover MC, Leon AS (2011). 2011 Compendium of Physical Activities: a second update of codes and MET values. Medicine and Science in Sports and Exercise. PMID 21681120 DOI
2. Garber CE, Blissmer B, Deschenes MR, Franklin BA, Lamonte MJ, Lee IM, Nieman DC, Swain DP (2011). Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: guidance for prescribing exercise. Medicine and Science in Sports and Exercise. PMID 21694556 DOI
3. Haskell WL, Lee IM, Pate RR, Powell KE, Blair SN, Franklin BA, Macera CA, Heath GW, Thompson PD, Bauman A (2007). Physical activity and public health: updated recommendation for adults from the American College of Sports Medicine and the American Heart Association. Medicine and Science in Sports and Exercise. PMID 17762377 DOI