Measure What Matters.
Shift your focus from absolute numbers to proportional progress. Losing just 5-10% of your body weight can significantly improve specific health markers.
Enter your weights to see your progress
Scientific Context
Understand why percentage loss correlates better with metabolic health improvements than raw pounds.
Goal Planning
Reverse calculate your target weight based on realistic percentage milestones (5%, 10%).
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Your data stays locally on your device. No sign-up required for basics.
Frequently Asked Questions
How do I calculate weight loss percentage?
The formula is simple: (Lost Weight ÷ Starting Weight) × 100. For example, if you started at 200 lbs and lost 10 lbs, that's (10 ÷ 200) × 100 = 5%.
Is 5% weight loss significant?
Yes. Clinical studies show that losing just 5% of body weight can significantly reduce blood pressure, improve cholesterol, and lower blood sugar levels.
What is a safe rate of weight loss?
Doctors generally recommend losing 1-2 lbs (0.5-1 kg) per week. This ensures you lose fat rather than muscle and prevents metabolic slowdown.
Does this calculator work for Kg and Lbs?
Yes. Our calculator works with any unit (lb, kg, stone) as long as you use the same unit for start and current weight. The percentage math remains the same.