Medical disclaimer

The tools and content on LoseSize (losesize.com) are provided for general informational and educational purposes only. They are not medical advice and are not a substitute for professional diagnosis, treatment or care.

What our tools are

Calculators that apply published population formulas to the numbers you enter. Population formulas estimate averages. Your body is not an average — results can be meaningfully off for athletes, during pregnancy, for children and teenagers, and for people with medical conditions or on medications that affect weight, appetite, metabolism or fluid balance.

What our tools will never do

• Diagnose any condition, including eating disorders or obesity.
• Prescribe a diet, exercise program, supplement or medication.
• Recommend a calorie intake below widely accepted safety floors (1,200 kcal/day for women, 1,500 kcal/day for men) — our planning tools flag and refuse these instead.
• Endorse a pace of weight loss above 1–2 lb (0.5–1 kg) per week — our tools warn rather than encourage.

Talk to a professional when…

• You are pregnant, breastfeeding, under 18, or managing any chronic condition.
• You have a history of disordered eating — please prioritize care over calculators.
• A tool suggests a change that feels extreme, or a result worries you.
• You are planning a weight-loss diet below safety floors or faster than 2 lb/week.

If you are in crisis or think you may have an eating disorder, help is available — in the US, contact the NEDA helpline or your local emergency services.

No professional relationship

Use of this site does not create a doctor–patient or dietitian–client relationship. If you think you may have a medical emergency, call your doctor or emergency services immediately.