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
LBS Live Calendar UK — Track Your Weight Daily
An LBS live calendar is a practical tool for tracking your daily weight in pounds as it changes throughout the month. If you're managing your weight as part of an NHS health guide or personal wellness plan, a live calendar system helps you visualise progress, identify patterns, and stay motivated. Unlike quick snapshots, a calendar approach gives you the full picture of natural weight fluctuations. MyWeightCheck's free progress tracker offers a modern alternative, letting you log weight in pounds, kilograms, or stone and watch trends over weeks and months. Whether you prefer traditional pen-and-paper calendars or digital tracking, understanding how weight naturally varies day-to-day is key to sustainable weight management in the UK.
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 an LBS Weight Calendar Effectively
Daily logging: Record your weight at the same time each morning, ideally before eating or drinking. This gives the most consistent reading and reduces day-to-day noise from water retention and food intake.
Weekly averages: Rather than focusing on single-day measurements, calculate your average weight for each week. This smooths out natural fluctuations and shows true progress over time.
Pattern spotting: After 4–6 weeks, patterns emerge. You may notice your weight typically rises mid-week then drops at weekends, or fluctuates with your menstrual cycle. Understanding these patterns reduces unnecessary stress.
Visual motivation: A calendar makes progress visible. Colour-coding weeks where you've stayed within your target range (as advised in NHS health information) turns tracking into a motivating practice rather than a chore.
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.
LBS vs Stone and Kilograms — Which to Use
The UK uses three weight units: pounds (lbs), stone, and kilograms (kg). Many UK adults grew up using stone and pounds, so these feel natural. However, NHS clinical settings and healthy weight guidelines increasingly use kilograms for consistency.
If you prefer tracking in pounds: one pound equals 0.454 kg. A healthy weight range for a 5ft 8in adult might be 120–160 lbs (55–73 kg). Our free weight converter makes switching between units instant. MyWeightCheck's progress tracker lets you log weight in whichever unit you prefer — the tool converts automatically, so you're never locked into one measurement system.
- 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's the best time to weigh myself for an LBS live calendar?
Weigh yourself first thing in the morning, after using the bathroom but before eating or drinking. This gives the most consistent reading day-to-day. Avoid weighing immediately after exercise, salt-heavy meals, or during hormonal fluctuations if possible, as these can skew results by 1–3 lbs.
Should I track daily or weekly weight in my LBS calendar?
Log daily for a complete record, but focus on weekly averages. Daily weight naturally fluctuates due to water, food, and digestion. Weekly averages filter out this noise and show genuine progress—this approach aligns with NHS weight management guidance for realistic, sustainable tracking.
How does an LBS calendar fit into UK health advice for weight loss?
An LBS calendar is a supportive tool, not a medical intervention. It helps you understand your weight patterns and stay accountable. For personalised healthy weight UK guidance, consult your GP or access NHS nhs health advice resources. A bmi calculator and weight converter complement calendar tracking.
Can I use MyWeightCheck tools instead of a paper LBS calendar?
Yes. Our free progress tracker replaces traditional calendars—log your weight in pounds, stone, or kg, and the tool displays trends, patterns, and weekly averages visually. It's faster, shareable, and always accessible. Combine it with our free bmi calculator and weight converter for complete weight monitoring in one place.
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.