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Ubify Financial Advisory Board
FINANCIAL ANALYSTS & CPA REVIEWERS
About This Tool
Physical activity energy expenditure is clinically estimated using the Metabolic Equivalent of Task (MET) framework, standardized by Ainsworth et al. in the Compendium of Physical Activities. One MET represents the rate of oxygen consumption at quiet rest (approximately 3.5 ml of oxygen per kilogram of body mass per minute, or 1 kcal per kilogram per hour).
### Tool Implementation and Calculation Mechanics The calculator determines total net caloric expenditure by multiplying exercise duration, metabolic intensity score, and body weight:
- **Core Energy Expenditure Equation:**\n $\text{Calories Burned (kcal)} = \left(\frac{\text{Duration (minutes)}}{60}\right) \times \text{MET} \times \text{Body Weight (kg)}$ - **Burn Rate per Minute:**\n $\text{Burn Rate (kcal/min)} = \frac{\text{Total Calories}}{\text{Duration (minutes)}}$ - **Equivalent Adipose Energy Metric:**\n Evaluates estimated caloric expenditure against standard human adipose energy density ($\approx 7,700\text{ kcal/kg}$ or $3,500\text{ kcal/lb}$). - **MET Activity Values Built-in:**\n - Yoga / Stretching: 2.5 MET\n - Moderate Walking (3.0 mph): 3.5 MET\n - Weight Training (Intense): 6.0 MET\n - Swimming Laps (Freestyle): 7.0 MET\n - Cycling (Moderate 12–14 mph): 8.0 MET\n - HIIT / Circuit Training: 8.0 MET\n - Running (6.0 mph / 10 min/mile pace): 9.8 MET
### Worked Numeric Example Using the tool's default parameters: - **Body Weight:** 75 kg - **Selected Activity:** Moderate Cycling (12–14 mph, 8.0 MET) - **Duration:** 45 minutes ($0.75\text{ hours}$) - **Calculation:**\n $\text{Calories} = 0.75 \times 8.0 \times 75 = 450\text{ kcal}$\n $\text{Burn Rate} = \frac{450}{45} = 10.0\text{ kcal/minute}$\n $\text{Adipose Equivalent} = \frac{450}{7700} \approx 0.058\text{ kg of fat energy equivalent}$
### Disclaimer & Client-Side Execution Guarantee MET ratings provide an empirical population estimate based on laboratory calorimetry benchmarks. Individual calorie expenditure varies based on ambient temperature, fitness economy, mechanical efficiency, heart rate, and hormonal factors. Wearable trackers or indirect calorimetry carts provide more individualized monitoring. This tool is intended for general physical fitness planning and does not provide clinical metabolic assessment. All calculations occur strictly in browser memory without sending user weight or workout logs to any remote server.
How to Use
- 1
Input your body weight in kilograms.
- 2
Choose your exercise or workout category from the MET intensity dropdown.
- 3
Enter your active exercise duration in minutes.
- 4
Review total estimated calories burned, burn rate per minute, and equivalent adipose energy metrics.
Frequently Asked Questions
What does a MET score mean in exercise science?
MET stands for Metabolic Equivalent of Task. 1 MET equals the energy expended sitting quietly at rest. An activity rated at 8.0 MET burns eight times more calories per minute than resting metabolic rate for a person of the same weight.
Why is body weight required to calculate calories burned?
Moving a heavier body mass across distance or against gravity requires proportionally greater mechanical work and oxygen uptake, making body weight a direct multiplier in metabolic energy equations.
Does this calculator measure exact heart-rate-based calories?
No. The calculator uses standardized MET scores from the Compendium of Physical Activities. It does not interface with heart-rate telemetry, lactate thresholds, or VO2 max measurements.
Is my exercise duration or body weight saved?
No. All calculations run strictly in your local browser runtime with zero server tracking or data storage.