Calcustack

Calories Burned Calculator: By Activity

Estimate the calories you burn for an activity and duration, based on your bodyweight and the activity's intensity.

Units

Calories burned

420 kcal30 min at 9.8 MET
Per minute
14.0 kcal
Per hour
840 kcal
MET used
9.8
Bodyweight
81.6 kg
At the same weight and duration
Walking, 3.5 mph184 kcal
Brisk walk, 4.5 mph214 kcal
Jogging, 5 mph300 kcal
Running, 8 mph506 kcal
Cycling, moderate343 kcal

How calories burned are calculated

This calculator uses the MET method, the standard model in exercise physiology. A MET (Metabolic Equivalent of Task) is a multiplier of your resting metabolic rate. The formula is:

kcal = MET × 3.5 × weight (kg) ÷ 200 × minutes

Sitting still is 1 MET, walking briskly is around 5, running at 6 mph is about 9.8, and intervals can hit 11-12. Multiply by your bodyweight and how long you did it, and you get a reasonable estimate of total calories burned, including the calories you'd have burned at rest during the same minutes.

How to use the number

The most common mistake is double-counting. If your TDEE already includes exercise via the activity multiplier ("moderate, 3-5 workouts/week"), you've already paid for those calories, adding them again will overshoot.

  • Sedentary TDEE + exercise calories on top = approximately correct, but eat back 50-70% to allow for overestimation.
  • Active TDEE + exercise calories on top = double-counted, you'll regain.
  • Tracking from scratch: use sedentary TDEE and log each workout as exercise calories.

Worked examples

Example 1. 180 lb person, 30 minutes running at 6 mph (9.8 MET). 9.8 × 3.5 × 81.6 ÷ 200 × 30 ≈ 420 kcal.

Example 2. 65 kg person, 45 minutes vigorous cycling (10 MET). 10 × 3.5 × 65 ÷ 200 × 45 ≈ 512 kcal.

Example 3. 200 lb person, 60 minutes of weight training (3.5 MET). 3.5 × 3.5 × 91 ÷ 200 × 60 ≈ 335 kcal.

What MET doesn't capture

  • Individual efficiency. Trained runners burn less than untrained at the same pace.
  • Terrain. Hills, sand, wind.
  • Equipment. Weighted vest, heavy pack, steep incline.
  • EPOC. Hard intervals burn extra calories after the session, MET doesn't include this.
  • Rest periods. Lifting MET assumes typical rest, your 5-minute rests between heavy sets are lower than 3.5 MET.

Common mistakes

  • Eating back every calorie a watch reports. Trackers overestimate by 20-50% on weighted/strength work.
  • Counting the whole walk to the gym. Sure, but it's already in your daily NEAT.
  • Comparing MET tables across sources. Numbers vary by 0.5-1.0 MET between references, none are perfectly right.
  • Using MET for very short, very hard efforts. Sprints and max efforts are poorly modeled by a single number.

FAQ

How accurate are MET-based estimates?+

Within 10-20% for most people. METs are population averages and don't account for individual efficiency, terrain, equipment or fitness level. Treat the number as a ballpark, not a budget.

What is a MET?+

Metabolic Equivalent of Task. 1 MET equals the energy you burn sitting still, about 1 kcal per kg of bodyweight per hour. An activity at 8 METs burns roughly 8× as much as resting.

Why does weight matter so much?+

Moving more mass costs more energy. A 200 lb runner burns about 25% more calories at the same pace than a 160 lb runner. The MET stays the same, the calorie total scales with bodyweight.

Should I add these to my TDEE?+

If you already picked an active TDEE multiplier, no, you'd double-count. If you used 'sedentary', you can add exercise calories on top, but eat back only 50-70% to leave margin for overestimation.

Does this include BMR?+

Yes, gross calories include the energy you'd have burned at rest during the same time. Net calories burned (above resting) are roughly 90% of the displayed number for moderate-to-vigorous activities.

What if my activity isn't listed?+

Use the closest match by intensity. Brisk walk is around 5 METs, jogging 7, hard running 10-12, lifting 3-6 depending on intensity.

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