The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
Free tracker included with every download this week
How Many Pounds Have I Lost — Track Your Progress
Tracking weight loss in pounds is a practical way to monitor your health journey, especially if you prefer imperial measurements. In the UK, many people track their progress in both kilograms and pounds, and understanding the relationship between the two helps you see your achievements clearly. Whether you've lost a few pounds or several stones, what matters is knowing if your progress is sustainable and healthy. Our free weight converter and progress tracker can help you record your weight loss across different units and monitor your improvements over time.
10,000+ calculations today · NHS-aligned thresholds · 100% free
Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
NHS Guidance on Healthy Weight Loss in the UK
The NHS recommends losing weight at a rate of 0.5 to 1 kg (approximately 1 to 2 pounds) per week for sustainable, healthy results. This gradual approach helps preserve muscle mass and makes lifestyle changes easier to maintain long-term. To achieve this, you typically need a calorie deficit of around 500 kcal per day through a combination of dietary changes and increased physical activity.
- Safe rate: Aim for steady losses rather than rapid drops, which can lead to muscle loss and nutrient deficiencies
- Tracking: Use our free progress tracker to log your weight weekly and spot trends over time—daily fluctuations are normal due to water retention and food intake
- Context: Even a loss of 5–10% of your body weight can deliver meaningful health benefits including improved blood sugar control, lower blood pressure, and reduced joint strain
If you've lost several pounds or more, use our free weight converter to see your progress in both metric and imperial units, which can help keep you motivated across different measurement systems.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Converting Pounds Lost to Your Overall Health Picture
To understand whether your pound loss represents meaningful progress, it's helpful to check your BMI (Body Mass Index) alongside your weight change. Our free BMI calculator can show you how your weight loss has shifted your BMI category according to NHS health thresholds. For example, losing 10 pounds might move you from the "overweight" category closer to a healthy weight range depending on your height and current weight.
Don't focus on pounds alone—how you feel matters too. Weight loss often comes with improved energy, better sleep, reduced joint pain, and improved mood. If you're using weight loss medication like Mounjaro or Wegovy as part of your health plan, track both your weight in pounds and your overall wellbeing. Your GP can offer personalised advice about whether your rate of loss is right for your individual health profile and goals.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How many pounds should I lose per week?
The NHS recommends losing 0.5 to 1 kg (1 to 2 pounds) per week for sustainable, healthy weight loss. This rate preserves muscle mass and is easier to maintain long-term. Faster loss is possible under medical supervision but increases risks of muscle loss and nutrient deficiencies.
How do I convert my pound weight loss to kilograms?
Divide your pound loss by 2.205. For example, if you've lost 10 pounds, that's approximately 4.5 kg. Use our free weight converter tool to switch between pounds, kilograms, and stone instantly—it handles the calculation for you.
What does losing 10 pounds mean for my health?
A 10-pound loss may shift your BMI category, improve blood pressure, reduce strain on joints, and lower your risk of type 2 diabetes. Even modest losses of 5–10% of body weight deliver measurable health benefits. Use our free BMI calculator to see how your loss affects your personal health profile.
How often should I weigh myself to track pounds lost?
Weigh yourself weekly at the same time, ideally in the morning before eating. Daily weighting can be misleading due to water retention and food intake. Our free progress tracker lets you log weekly measurements and spot genuine trends over time while ignoring normal fluctuations.
Should I track pounds or kilograms?
Track whichever unit feels most natural to you—both are equally valid. Many UK adults use both interchangeably. Our weight converter and progress tracker support all units (pounds, kilograms, and stone), so you can log in whatever measurement you prefer.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.