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
Losing Weight Graph — How to Track Your Progress Safely
A losing weight graph is one of the most effective ways to visualise your weight loss journey and stay motivated. Whether you're following NHS weight management guidance or exploring prescription weight loss options, tracking your progress with a graph helps you see realistic patterns over time rather than focusing on day-to-day fluctuations. This guide explains how to create and use a weight loss graph effectively, what healthy progress looks like, and how to use tools to support your journey.
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.
What Does a Healthy Losing Weight Graph Look Like?
According to NHS guidance, a safe and sustainable weight loss rate is 0.5 to 1 kg (1 to 2 lbs) per week. On a losing weight graph, this appears as a gentle downward slope rather than a dramatic drop. Your graph may show natural fluctuations — a small rise one week, a larger drop the next — but the overall trend should point downward.
When plotted over 8 to 12 weeks, healthy weight loss typically shows:
- Initial rapid loss in weeks 1–3 (often partly water weight)
- Steady, gradual loss of 0.5–1 kg weekly thereafter
- Small plateaus or slight increases — normal and temporary
- Cumulative loss of 4–12 kg over 12 weeks on a reduced-calorie diet
Faster weight loss (more than 1.5 kg per week) is possible with medical support such as prescription weight loss medication, but even then, the healthiest graphs show consistent progress rather than erratic spikes. Individual results vary based on starting weight, metabolism, diet adherence, and physical activity.
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.
How to Create and Use Your Losing Weight Graph
The simplest approach is to weigh yourself once per week on the same day and time (morning is best) and plot the result on a graph. Use our free progress tracker on this page to log your weight automatically — the tool will display your trend line, making patterns visible at a glance.
Your losing weight graph works best when you measure over 4+ weeks; single weekly fluctuations don't tell the real story. Use the graph to identify whether your current approach — diet, exercise, or medication — is working. If your graph shows no downward trend after 4 weeks, discuss your progress with your GP or a healthcare professional. They may suggest adjusting your calorie intake, increasing physical activity, or exploring options like prescription weight loss injections (such as GLP-1 medications) if you're eligible.
- 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 for an accurate losing weight graph?
Once per week is ideal — ideally the same day and time each week, typically in the morning. Daily weighing can be misleading due to water retention and natural body fluctuations. Weekly data gives a clearer picture of your real progress over time.
Why does my losing weight graph show a plateau after initial rapid loss?
Initial rapid loss is often water and glycogen, not pure fat. After 2–4 weeks, loss slows to a more realistic rate of 0.5–1 kg per week. Plateaus are normal and temporary — they don't mean your diet has stopped working. Continue your approach for another 2–4 weeks before adjusting.
What if my losing weight graph isn't showing downward progress after 4 weeks?
Review your calorie intake and activity level — the most common reason for stalled progress is underestimating calories consumed. If you've genuinely maintained a calorie deficit without progress, speak to your GP. They can rule out medical causes (thyroid issues, medication effects) and discuss whether prescription weight loss support might help.
Can I use a losing weight graph if I'm taking Mounjaro or Wegovy?
Yes — in fact, a graph is especially useful with prescription weight loss medication. Clinical trials showed average weight loss of 15–21% over 72 weeks with Mounjaro, and around 15% with Wegovy, but individual results vary. A graph shows your personal response and helps your prescriber assess whether your dose is working for you.
How does a losing weight graph help with sustainable weight loss compared to just stepping on scales?
A graph shows you the real trend — your brain responds better to visualised progress. It reveals that small fluctuations are normal, reducing discouragement. It also highlights whether your method is working over time, helping you make informed decisions about diet, activity, or discussing medication options with your GP.
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.