Calculators
Free toolBMI calculatorFree adult BMI calculator in cm/kg or feet/stone. See your BMI category, healthy weight range and waist-to-height ratio, with NICE ethnicity thresholds.Free toolHealthy weight for your heightFind the healthy weight range for your height in kg or stones and pounds, based on NHS BMI ranges and NICE’s lower thresholds for some ethnic groups.Free toolWaist-to-height ratio calculatorCheck your waist-to-height ratio, the measure NICE recommends alongside BMI. Keeping your waist below half your height lowers your health risks.Free toolCalorie calculatorEstimate how many calories you burn each day and a sensible target for gradual weight loss of about 0.5 kg a week, using the Mifflin–St Jeor equation.
Understanding your weight
GuideWhat is BMI and what does it tell you?BMI explained in plain English: how it is worked out, the NHS ranges for adults, why it can mislead, and what to measure alongside it.GuideBMI and ethnicity: why the thresholds are lower for some peopleWhy NICE uses lower BMI thresholds for South Asian, Chinese, Middle Eastern, Black African and African-Caribbean adults, and what it means for you.GuideHow to measure your waist correctlyA simple step-by-step guide to measuring your waist accurately at home, the mistakes to avoid, and what your measurement says about your health.
Weight and your health
GuideWeight and type 2 diabetesHow excess weight drives type 2 diabetes, why losing weight can improve blood sugar or even lead to remission, and how to do it safely if you take medicines.GuideWeight and high blood pressureHow excess weight raises blood pressure, how much losing weight can lower it, and other everyday changes that help — plus the numbers to know.GuideWeight and obstructive sleep apnoeaHow excess weight causes obstructive sleep apnoea, the symptoms to look out for, why weight loss helps, and when to see your GP.GuideWeight and polycystic ovary syndrome (PCOS)Why polycystic ovary syndrome makes weight harder to manage, how losing even 5% can ease symptoms, and important points if you are planning a pregnancy.GuideWeight and the menopauseWhy weight often increases around menopause, why it tends to settle around the middle, and practical steps that help — from strength training to sleep.GuideWeight and joint painHow extra weight loads your knees and hips, why losing even 5–10% can reduce osteoarthritis pain, and joint-friendly ways to stay active.
Living well
GuideProtein and nutrition while losing weightHow to eat well while losing weight: how much protein you need, building filling meals, fibre, fluids and the nutrients that matter when you eat less.GuideStrength training while you lose weightWhy strength training matters while you lose weight, how much activity the UK guidelines recommend, and a simple beginner routine you can do at home.GuideHow to keep weight offWhy weight regain is common, the habits that help people keep weight off long-term, and how to plan ahead if you finish a medical weight-loss programme.
Our weight-loss service
ServiceAm I eligible for medical weight loss?Who can be considered for medical weight-loss treatment in the UK: BMI criteria, weight-related conditions, and when treatment is not suitable.ServiceHow our weight-loss consultation worksFrom the free online assessment to prescriber review, clinic visit or London home delivery, and follow-up: what to expect at Well Medicare, step by step.ServiceWeight-loss treatment with same-day delivery in LondonSame-day courier delivery across London postcodes after an online assessment and prescriber approval. How it works, who it is for, and what to expect.ServiceOur weight-loss clinic in MaryleboneVisit Well Medicare at 44 Crawford Street, Marylebone, W1H 1JS — a GPhC-registered pharmacy offering medical weight-loss consultations near Baker Street.
Not sure if medical weight loss is right for you?
Our free online assessment takes about five minutes. A GPhC-registered prescriber reviews it and only recommends treatment if it is safe and suitable for you.
Start the free assessmentThis page is general health information. It does not replace advice from your GP or another healthcare professional who knows your history. If you have symptoms that worry you, contact your GP or NHS 111; in an emergency call 999. Prescription treatment is only supplied after an assessment by a registered prescriber.