| Parameter | Value |
|---|---|
| {{ row.label }} | {{ row.value }} |
| Activity | MET | kcal / hr ({{ kgDisplay }} kg) |
|---|---|---|
| {{ a.label }} | {{ a.met }} | {{ format(a.met * kgDisplay) }} |
Calorie expenditure reflects the energy your body converts into movement and heat. Researchers describe exercise intensity with the Metabolic Equivalent of Task (MET), a factor comparing an activity’s oxygen demand to quiet resting metabolism, thereby standardising cross-sport comparisons.
This calculator multiplies chosen MET, body-mass in kilograms, and activity duration in hours to approximate energy cost. A reactive engine instantly updates numeric panels, while a charting layer visualises minute-by-minute burn and contrasts common sports.
You can plan training loads, explore weight-loss scenarios, or benchmark workouts against day-to-day tasks. Rounded figures aid practical decisions but never replace monitored respiration tests. This calculator offers informational estimates, not medical advice.
Human energy turnover correlates with the rate of aerobic metabolism; MET scores—curated by sports-science literature—approximate this demand regardless of participant profile. Converting that demand into kilocalories requires scaling by body mass because heavier bodies perform more mechanical work at identical intensities. Time integration then yields total energy.
| Symbol | Meaning | Unit | Typical Range | Sensitivity |
|---|---|---|---|---|
| M | MET value for activity | dimensionless | 1 – 15 | linear |
| W | Body mass | kg | 40 – 150 | linear |
| T | Duration | h | 0.1 – 4 | linear |
| E | Energy burned | kcal | 10 – 4 000 | output |
The identical person cycling leisurely (MET 4.0) for the same duration expends about 210 kcal, demonstrating proportional sensitivity to activity choice.
null results invalid input.Computation complexity is O(1) for summary metrics and O(n) for timeline plotting, where n equals the selected minute step. All maths executes client-side with IEEE-754 double precision; numerical drift is negligible under four-hour durations. The charting layer auto-resizes on viewport changes; no external API calls are made.
The workflow moves from personal metrics to visual analysis.
A MET equals the oxygen consumption required at rest. An activity rated 5 METs demands roughly five times that baseline metabolic rate.
Scientific literature standardises on kilograms; the calculator automatically converts pounds to maintain accuracy and comparability.
No. All calculations run locally in your browser; numbers disappear when you close or refresh the page.
No. MET definitions average across adult populations. For greater precision, consult lab-based calorimetry tailored to your physiology.
Yes. Use decimal minutes or switch to hours to capture sessions such as 7.5 minutes of stair climbing.