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 Tracker Chart: Track Your Progress Effectively
A weight tracker chart is a simple but powerful tool for monitoring your weight management journey and staying motivated towards your health goals. Whether you're working towards a healthier weight, managing a health condition, or simply monitoring your wellness, tracking your progress visually can help you see patterns, celebrate milestones, and maintain accountability. In the UK, NHS guidance emphasises that regular monitoring combined with lifestyle changes supports sustainable weight management. This guide explains how to use a weight tracker chart effectively alongside NHS-recommended approaches to healthy weight.
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.
How to Use a Weight Tracker Chart Effectively
A weight tracker chart visualises your weight over time, helping you spot trends beyond daily fluctuations. Start by measuring your weight at the same time each week — ideally first thing in the morning — and record it on your chart. This consistent approach removes variables like food and water intake that cause daily variation. Plot your measurements weekly rather than daily; this smooths out natural fluctuations and shows genuine progress. Use our free progress tracker on this page to log and visualise your weight journey automatically, or print a simple paper chart if you prefer a hands-on approach. Track for at least 4–6 weeks before expecting to see meaningful trends. The NHS recommends sustainable weight loss of 0.5–1 kg per week, so your chart should reflect gradual progress rather than dramatic drops. Include context notes: record changes in diet, exercise, or life circumstances that may affect your weight. This helps you identify what strategies actually work for your individual health situation.
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.
UK Health Context and Setting Realistic Goals
The NHS recommends setting realistic weight loss goals of 5–10% of your current body weight as an initial target, which typically translates to meaningful health improvements. Calculate your current BMI and healthy weight range using our free BMI calculator above to understand what a sustainable target looks like for your height. Your chart should show progress towards your personalised healthy weight range, not an arbitrary number. Remember that weight naturally fluctuates by 1–2 kg day-to-day due to water retention, food intake, and hormonal changes — your tracker will smooth these out and reveal true progress. If you're using prescription weight loss support like GLP-1 medication, your weight tracker becomes even more valuable for assessing how the medication is working for you. Share your tracker with your GP at regular check-ups to discuss your progress and whether your approach needs adjusting.
- 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 often should I weigh myself when using a weight tracker chart?
The NHS recommends weighing yourself once a week at the same time, ideally first thing in the morning. Weekly tracking avoids obsessing over daily natural fluctuations while still capturing meaningful trends. Consistency matters more than frequency — pick one day each week and stick to it for accurate pattern recognition.
What's a realistic rate of weight loss to show on my tracker?
Sustainable weight loss is typically 0.5–1 kg per week according to NHS guidance. Your chart should reflect this gradual progress. Faster weight loss can happen with medical support, but slower, steady loss is easier to sustain and maintain long-term. Celebrate progress over weeks, not days.
Can I use a weight tracker chart if I'm on GLP-1 medication like Mounjaro or Wegovy?
Yes — a weight tracker chart is valuable when using prescription weight loss medication. It helps you see whether the medication is working for you, spot patterns, and track progress towards your goal. Share your chart with your prescriber or GP at review appointments to discuss your results and any adjustments needed.
What should I do if my weight tracker shows no progress for several weeks?
A plateau lasting 2–3 weeks is normal during weight loss. Continue tracking — sometimes weight stays steady before dropping again. If progress stalls for longer, discuss with your GP. Factors like medication changes, hormonal cycles, stress, or sleep can affect weight. Your GP can advise whether your diet, exercise, or medical plan needs adjustment.
Is it better to use a paper weight tracker chart or a digital one?
Both work well — choose whichever you'll use consistently. Paper charts offer simplicity and a tangible sense of progress. Digital trackers like our free progress tracker provide automatic calculations, charts, and easy sharing with your GP. Many people find digital tracking more motivating because it visualises trends automatically.
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.