%Weight Loss Percentage

About Us

Meet the team behind our free, dietitian-reviewed health tools.

Meet the Team Behind Weight Loss Percentage

Weight Loss Percentage was founded with a simple mission: to provide free, accurate, dietitian-reviewed health and fitness calculators. We believe that tracking your health should be scientific, accessible, and easy to understand.

Our team is composed of registered dietitians, clinical nutritionists, and exercise physiologists who review our tools, formulas, and articles to ensure they reflect the latest medical guidelines and evidence-based research.

We do not sell fad diets or unverified supplements. Our tools are designed to empower you with objective calculations to help you take control of your health and weight loss journey safely.

Medical Advisory & Review Board

Dr. Rekha Kumar, M.D., M.S.

Dr. Rekha Kumar, M.D., M.S.

Lead Medical Reviewer & Obesity Medicine Specialist

Associate Professor of Clinical Medicine at Weill Cornell Medicine; Attending Physician at NewYork-Presbyterian Hospital; Former Medical Director of the American Board of Obesity Medicine (ABOM).

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Medically reviewed by Dr. Rekha Kumar, M.D., M.S. — Lead Medical Reviewer · Last reviewed: September 2026 · Updated: 2026-09-15

Evidence & references

This tool is for informational purposes only and is not a substitute for professional medical advice.

Frequently asked questions

Is this calculator free to use?

Yes. Every calculator on Weight Loss Percentage is free, with no sign-up or account required.

How accurate is the result?

Results depend on the accuracy of what you enter and the published formulas the tool uses, which follow standard guidance from national health authorities. Track the trend over weeks rather than relying on a single reading.

How often should I check it?

Check whenever your weight, activity or goals change — for most people once a week is enough to see a reliable trend.

Who reviews the content on this site?

All medical and nutrition content is written and reviewed by Dr. Rekha Kumar, M.D., M.S., our lead medical reviewer, and cites guidance from U.S. federal health sources such as the CDC and NIH.

Medical Disclaimer & Evidence-Based Guidelines

Educational Resource Only: The metrics, tools, and deficit projections displayed on Weight Loss Percentage are designed to support personal goal tracking and promote healthy weight management. They do not constitute formal medical diagnoses or clinical treatment plans. Please consult a registered dietitian or healthcare professional before embarking on restrictive dieting or intensive physical training.

Healthy Weight Loss Standards: Clinical evidence suggests that a safe and sustainable rate of fat loss is approximately 1 to 2 pounds per week (or 0.5% to 1.0% of your total body weight). Rapid weight reduction can lead to metabolic adaptation, lean muscle loss, and nutritional deficiencies. Tracking your weight loss percentage rather than raw pounds provides a more accurate metric of progress relative to your unique frame and initial body mass index.

Deficit Projections: Calculators like BMR, TDEE, and calorie deficit models estimate energy expenditure based on baseline physiological variables. Actual metabolic rates vary due to lean body mass distribution, hormonal health, activity levels, and individual adaptation. Adjust caloric targets gradually while prioritizing nutrient-dense whole foods to optimize energy levels and sustain your metabolic health.