Fitness Calculator

CALORIES
BURNED

Calculate your energy expenditure for any activity using the MET formula — personalised to your body weight and duration.

30 min

ESTIMATED CALORIES BURNED

kcal

COMMON ACTIVITIES

Estimated calories burned per 30 minutes for a 70 kg / 154 lb person.

Activity Calories (30 min) Intensity
Running (10 km/h)343High
HIIT Training280High
Cycling (vigorous)245High
Swimming laps245High
Soccer210Moderate
Weight Training175Moderate
Brisk Walking158Moderate
Yoga88Low
Stretching70Low

HOW TO BURN MORE

⏱️

Increase Duration Gradually

Add 5–10 minutes to your sessions each week. Longer workouts compound your calorie burn without requiring higher intensity.

🔥

Add Intervals

Alternating between high and low intensity (HIIT) can burn up to 30% more calories than steady-state cardio in the same time.

💪

Build Muscle

Every kg of muscle burns ~13 kcal/day at rest. Strength training raises your resting metabolic rate long after your workout ends.

🥗

Stay in a Deficit Wisely

Aim for a 300–500 kcal deficit per day. Cutting too aggressively slows your metabolism and breaks down muscle tissue.

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Hydrate Well

Even mild dehydration (2%) can reduce exercise performance by up to 20%, meaning fewer calories burned per session.

😴

Prioritise Sleep

Poor sleep elevates cortisol and ghrelin (hunger hormone), making fat loss harder. 7–9 hours supports optimal fat metabolism.

THE FORMULA

How is this calculated?

This calculator uses the MET (Metabolic Equivalent of Task) method — the gold standard used in exercise science. MET values represent how much energy an activity requires relative to sitting at rest (1 MET = ~1 kcal/kg/hour).

Calories = MET × Weight (kg) × Duration (hours)

For example, running at 10 km/h has a MET of ~9.8. A 70 kg person running for 30 minutes burns approximately 9.8 × 70 × 0.5 = 343 kcal.

Note: These are estimates. Individual results vary based on fitness level, terrain, temperature, and metabolism. For clinical precision, indirect calorimetry (VO₂ testing) is recommended.