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
Weight Loss Chart Template — Track Your Progress with UK Options
A weight loss chart template helps you monitor your progress as you work towards a healthier weight. Whether you're using prescription weight management medication, following a reduced-calorie diet, or increasing physical activity, tracking your journey is essential for staying motivated and understanding what works for you. This guide covers how to use a weight loss chart effectively, the UK-licensed medication options available, and how to get started with your weight management plan through either the NHS or private routes.
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.
UK-Licensed Prescription Weight Management Options
Three prescription-only medications are currently licensed in the UK for weight management:
- Mounjaro (tirzepatide) — a dual GIP and GLP-1 receptor agonist, once-weekly injection, doses from 2.5 mg to 15 mg. Clinical trials showed an average weight loss of 15–21% of body weight over 72 weeks when used alongside reduced-calorie diet and increased physical activity.
- Wegovy (semaglutide) — a GLP-1 receptor agonist, once-weekly injection, doses up to 2.4 mg. Average weight loss around 15% of body weight in clinical trials at the maximum dose.
- Saxenda (liraglutide) — a GLP-1 receptor agonist, daily injection, maximum dose 3 mg per day. Similar efficacy to Wegovy.
All three medications may help with weight loss in adults with a BMI of 30 or above, or BMI of 27–29.9 with weight-related health conditions such as type 2 diabetes, high blood pressure, or cardiovascular disease. Individual results vary significantly, and medication works best alongside lifestyle changes. Your weight loss chart will help you track progress with any of these options.
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.
Getting Started: NHS vs Private Route in the UK
NHS access: Prescription weight management medication is available through specialist tier 3 and tier 4 weight management services. You'll need a referral from your GP, and availability varies significantly by region. Waiting lists can be lengthy, sometimes several months or longer depending on your local integrated care board (ICB).
Private access: If you prefer faster access, private online prescribing services offer UK-licensed weight loss medications following an online clinical assessment with a UK-licensed prescriber. Costs typically range from £129–£320 per month depending on dose.
Next step: Talk to your GP about whether prescription weight loss medication is suitable for you. Use our free GLP-1 weight loss calculator to estimate potential results at different doses, and our BMI calculator to establish your baseline health metrics before you start tracking.
- 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.
What should I include in my weight loss chart template?
Track weekly weight (in kg or stone — use our weight converter to switch units), BMI if desired, waist circumference, energy levels, and any notes about diet or physical activity. Simple is better — consistency matters more than detail. Aim to weigh yourself at the same time each week, ideally in the morning.
Is weight loss with prescription medication assured?
No. While clinical trials showed average weight loss of 15–21% with Mounjaro and around 15% with Wegovy, individual results vary significantly. Results depend on medication type, dose, diet, physical activity, genetics, and how long you've been taking the medication. Your chart will help you track your personal results.
Can I use a weight loss chart template with NHS weight management services?
Yes. Your specialist NHS weight management team will likely provide guidance on tracking, but a simple weight loss chart is universally useful. Whether you're accessing medication through the NHS or privately, tracking weekly progress helps you and your healthcare provider assess whether the treatment is working.
How do I know if I'm eligible for prescription weight loss medication in the UK?
Adults with a BMI of 30 or above, or BMI of 27–29.9 with weight-related health conditions, may be eligible. Conditions include type 2 diabetes, high blood pressure, sleep apnoea, or cardiovascular disease. Your GP can assess your eligibility and discuss whether weight management medication is appropriate for you.
What's a realistic weight loss rate to track on my chart?
The NHS recommends losing 0.5–1 kg (1–2 lbs) per week for sustainable, healthy weight loss. Faster loss is possible with medication but increases the risk of muscle loss. If you're on Mounjaro or Wegovy, you may see faster initial loss, but plateaus are normal as your body adapts.
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.