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Used by Mounjaro & Wegovy patients across the UK

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
Get the guide + free tracker — £1.99 →

Free tracker included with every download this week

GLP-1 Medication Guide — 11 chapters, 100+ pages, NHS-aligned with free 52-week weight loss tracker calendar
Free · Instant · No sign-up required

Weight Loss Chart Free Printable — Track Your Progress

A free printable weight loss chart is a simple but effective way to monitor your progress as you work towards a healthier weight. Whether you're following an NHS weight loss programme, using prescription weight management medication, or making dietary changes, tracking your weight visually helps maintain motivation and shows meaningful progress over time. MyWeightCheck provides tools to help you track your journey in both stone and kilograms, aligned with UK measurements and NHS health guidance.

10,000+ calculations today · NHS-aligned thresholds · 100% free

26%of UK adults are living with obesityNHS Digital, 2023
64%of adults in England are overweight or obeseHealth Survey for England
£6.5bnannual cost of obesity to the NHSPublic Health England
4.7Mpeople in England eligible for weight loss drugsNICE estimates, 2024

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.

Below 18.5Underweight
18.5 – 24.9Healthy
25 – 29.9Overweight
30+Obese

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.

Why Track Your Weight Loss Progress?

Tracking weight loss offers several important benefits beyond just the number on the scales. Visual progress monitoring helps you see patterns over time — weight naturally fluctuates day-to-day due to water retention, food intake, and hormones, but a chart shows the overall downward trend. Research shows that self-monitoring is one of the most effective strategies for sustainable weight loss.

  • Helps identify which lifestyle changes work best for you
  • Increases motivation and accountability
  • Shows progress even when scales don't move — improvements in energy, mood, or how clothes fit matter too
  • Supports conversations with your GP about whether treatment is working
  • Works alongside other metrics like waist measurement and BMI

The NHS recommends losing weight at a sustainable rate of 0.5 to 1 kg per week — a chart helps you stay realistic about expectations and celebrate steady progress. Use our free progress tracker above to log your weight loss journey.

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How It Works

Three simple steps to understand your weight and take action.

1Check Your BMI

Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.

2Explore Your Options

If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.

3Track Your Progress

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.

Creating Your Free Printable Weight Loss Chart

A simple weight loss chart needs just three columns: date, weight in stone and pounds (or kg), and notes. Start by recording your current weight and setting a realistic goal — for example, losing 5–10% of your current body weight, which the NHS confirms can deliver significant health benefits.

  • Weigh yourself weekly on the same day and time (morning, after toilet, before food)
  • Record weight in stone and pounds or kilograms — whichever you prefer
  • Note any changes: mood, energy levels, how clothes fit, or medication adjustments
  • Don't obsess over weekly fluctuations — focus on the overall trend over 4–8 weeks

MyWeightCheck's free progress tracker automates this process, calculating your BMI alongside weight and showing your trajectory visually. Try our weight loss calculator to understand expected progress with different approaches.

Mounjaro (Tirzepatide)
  • 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
Read our full Mounjaro guide →
Wegovy (Semaglutide)
  • 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
Read our full Wegovy guide →

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.

FeatureMounjaroWegovy
Drug classDual GIP/GLP-1 agonistGLP-1 agonist
Active ingredientTirzepatideSemaglutide
Avg. weight loss15–22.5%12–17%
Key trialSURMOUNT-1 (2022)STEP 1 (2021)
Max dose15 mg weekly2.4 mg weekly
Escalation period20–32 weeks16–20 weeks
AdministrationWeekly injection (pen)Weekly injection (pen)
NHS availabilityPrivate prescription onlyNHS & private
Approx. private cost£150–£250/month£150–£300/month
Common side effectsNausea, diarrhoea, constipationNausea, 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.

Standard eligibility
  • BMI of 30 or above (obese)
  • Age 18 or over
  • No contraindicated conditions
  • Committed to lifestyle changes
With comorbidities
  • 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 a weight loss tracking chart include?

A basic chart needs date, weight (in stone, pounds, or kg), and optional notes. Include your starting weight and target weight, then record weekly weigh-ins. The NHS recommends weekly tracking as it smooths out daily fluctuations caused by water, food, or hormones. Our free progress tracker does this automatically.

How often should I weigh myself when tracking weight loss?

The NHS recommends weighing yourself weekly on the same day and time — ideally in the morning after using the toilet and before eating. Avoid daily weigh-ins as natural daily fluctuations can be demotivating. A weekly pattern shows the true trend in your weight loss journey.

Is losing 1 kg per week a healthy rate?

Yes, the NHS recommends losing 0.5 to 1 kg per week as a safe, sustainable rate. Faster loss is possible with medical support (such as prescription weight loss medication), but slower loss is equally valid. Consistency matters more than speed — even 0.5 kg per week becomes 26 kg in a year.

Should I track weight loss if I'm taking prescription medication like Mounjaro or Wegovy?

Yes, tracking is particularly useful with prescription weight loss medication. These medications may help you lose an average of 15–21% of body weight in clinical trials, but individual results vary. A chart lets you see your personal response and discuss progress with your prescriber. Use our BMI calculator to track how your BMI changes alongside weight.

Can I use a weight loss chart alongside other health metrics?

Absolutely — weight is only one measure of progress. Consider also tracking: waist circumference, how your clothes fit, energy levels, blood pressure, or blood sugar (if relevant). BMI is useful but has limitations — it doesn't distinguish muscle from fat. A holistic chart including these metrics gives a fuller picture of your health improvements.

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.

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