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 Graph App — Track Your Progress Easily
A weight loss graph app helps you visualise your progress over time, which is proven to increase motivation and improve weight management outcomes. MyWeightCheck offers a free, easy-to-use progress tracker designed for UK adults. Whether you're following a reduced-calorie diet, taking prescription weight loss medication like Wegovy or Mounjaro, or simply focusing on lifestyle changes, tracking your weight journey with visual graphs makes it easier to spot trends, celebrate milestones, and stay committed to your health goals. Regular monitoring supports sustainable weight loss rather than quick fixes.
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 Weight Loss Tracking Apps Work
Weight loss graph apps allow you to log your weight regularly and automatically generate visual charts showing your progress over days, weeks, and months. MyWeightCheck's free progress tracker lets you record your weight in stone, pounds, or kilograms — whichever you prefer — and displays your data as easy-to-read graphs. This visual feedback is powerful: research shows that people who track their weight consistently lose more weight than those who don't. The app also helps you identify patterns, such as how your weight fluctuates weekly or responds to dietary changes. Many people combining weight loss medication with lifestyle adjustments find that tracking reinforces their commitment. You can log entries daily, weekly, or however frequently suits you.
- Record weight in UK measurements (stone, lbs, kg)
- Generate automatic visual progress graphs
- Identify weight loss trends and patterns
- Stay motivated with milestone markers
- Access your data anytime, anywhere
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.
Using MyWeightCheck's Free Progress Tracker
MyWeightCheck's free progress tracker is designed specifically for UK adults and integrates with our BMI calculator and weight loss tools. Simply log your current weight, and the app tracks your journey over time, showing whether you're on target for sustainable weight loss (approximately 0.5–1 kg per week according to NHS guidance). The tracker works alongside our GLP-1 weight loss calculator, which can help you estimate projected results if you're considering prescription weight loss medication as part of your weight management strategy. You can also use our free weight converter to switch between units at any time. Consistent tracking removes guesswork and helps your GP or prescriber monitor your progress effectively.
- 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.
Does using a weight loss tracker actually help you lose weight?
Yes. Research consistently shows that people who track their weight lose significantly more weight than those who don't. Tracking creates accountability, helps you spot patterns, and keeps motivation high. Visual graphs make progress tangible, which is especially motivating during slower-loss weeks.
How often should I weigh myself when using a weight loss graph app?
The NHS recommends weighing yourself once a week, at the same time of day (ideally morning) and in similar clothing, for the most reliable tracking. Weekly weighing avoids daily fluctuations from hydration and food intake, while still providing enough data points to see real trends in your graph.
Can a weight loss app replace medical advice?
No. A tracking app is a tool to monitor progress, not a replacement for medical guidance. Always consult your GP before starting any weight loss programme, especially if taking prescription medication like Wegovy or Mounjaro. Your GP can interpret your data and adjust your approach if needed.
Is MyWeightCheck's progress tracker free to use?
Yes. MyWeightCheck's free progress tracker requires no sign-up, no subscription, and no payment. It's designed as a completely free tool for UK adults to support their weight management journey alongside our BMI calculator and GLP-1 weight loss calculator.
What if my weight loss graph shows no progress?
Plateaus are normal in weight loss. Weight loss rarely follows a straight line — you may see no change for 1–2 weeks, then a drop. Check that your calorie deficit is sufficient and that lifestyle factors (stress, sleep, hydration) are optimised. If you're on prescription weight loss medication, discuss persistent plateaus with your prescriber.
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.