Home
Back
Equations:
| From: | To: |
This calculator computes the percentage of weight loss from initial to final weight in grams, and converts grams to calories using a specified calories-per-gram factor. It's useful for nutritional tracking and dietary planning.
The calculator uses two equations:
Where:
Explanation: The first equation calculates the percentage of weight lost, while the second converts grams to calories based on the energy density.
Details: Tracking weight loss percentage helps monitor progress in diets or fitness regimes. Converting grams to calories is essential for nutritional assessment and meal planning.
Tips: Enter all weights in grams. Ensure initial weight is greater than final weight for meaningful percentage calculation. Use appropriate calories-per-gram values (e.g., 4 cal/g for carbs/protein, 9 cal/g for fat).
Q1: Why calculate weight loss percentage instead of absolute loss?
A: Percentage loss accounts for different starting weights, providing a standardized measure of progress.
Q2: What are typical calories-per-gram values?
A: Carbohydrates and protein provide about 4 cal/g, while fat provides about 9 cal/g. Alcohol provides about 7 cal/g.
Q3: Can this calculator be used for any substance?
A: Yes, as long as you have accurate weight measurements and the appropriate calories-per-gram factor for the specific substance.
Q4: How accurate is the calorie calculation?
A: Accuracy depends on using the correct CPF value for the specific food or substance being measured.
Q5: What if my final weight is higher than initial weight?
A: The percentage will be negative, indicating weight gain rather than loss.