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
Is Jump Rope Good For Weight Loss?
Yes, jump rope is an excellent cardiovascular exercise that can support weight loss as part of a balanced approach. It burns significant calories, builds fitness, and is accessible and affordable. However, sustainable weight loss requires a calorie deficit, which combines exercise with dietary changes. For adults struggling with weight management in the UK, prescription weight loss medications like Mounjaro and Wegovy are also available through NHS services or private prescribing—though exercise remains beneficial alongside medical treatment. Using our free BMI calculator and weight loss projection tools can help you track progress and understand what approach suits your goals.
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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.
Prescription Weight Loss Options in the UK
For UK adults with a BMI of 30 or above, or 27 or above with weight-related health conditions, three prescription medications are licensed for weight management:
- Mounjaro (tirzepatide) — once-weekly injection; in clinical trials, participants lost an average of 15–21% of body weight
- Wegovy (semaglutide) — once-weekly injection; evidence from STEP trials showed approximately 15% average weight loss
- Saxenda (liraglutide) — once-daily injection; supports modest, steady weight reduction
These are prescription-only medicines and require clinical assessment before being prescribed. Access in the UK is available through NHS specialist weight management services (tier 3) or private online prescribing. Results vary significantly between individuals, and medication works best alongside reduced-calorie diet and increased 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.
NHS Access and Next Steps
If you're interested in prescription weight loss medication through the NHS, start by discussing your weight and health with your GP. They can refer you to your local specialist weight management service—though waiting times vary by region. Alternatively, private online prescribing is available without an NHS referral through GPhC-registered pharmacies.
In the meantime, exercise like jump rope, combined with balanced nutrition and lifestyle changes, supports health and fitness. Use our free BMI calculator to understand where you sit on the NHS scale, and try our GLP-1 weight loss calculator to see estimated outcomes if you become eligible for prescription support.
- 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.
Can I lose weight with jump rope alone?
Jump rope burns calories and improves cardiovascular fitness, but sustainable weight loss requires a calorie deficit. Combine regular jump rope sessions with dietary changes for best results. On average, 15–20 minutes of jump rope burns 150–250 calories depending on intensity and body weight.
What prescription weight loss medication can I get on the NHS in the UK?
Three medications are licensed for weight management: Mounjaro, Wegovy, and Saxenda. Eligibility typically requires a BMI of 30 or above, or 27–29.9 with weight-related health conditions. Your GP can assess whether you qualify and refer you to specialist services.
How do GLP-1 medications like Mounjaro and Wegovy work?
Both medications activate hormones that regulate appetite and fullness signals. Mounjaro works on two pathways (GIP and GLP-1), while Wegovy works on one (GLP-1). They help reduce cravings and support feeling fuller after smaller meals, alongside lifestyle changes.
Is private weight loss medication prescription available without NHS referral?
Yes. Private online prescribing is available through GPhC-registered pharmacies in the UK. You'll have an online clinical assessment, and if appropriate, receive a prescription for Mounjaro or Wegovy. This bypasses NHS waiting lists but involves a cost.
How long does it take to see weight loss results with prescription medication?
Results typically appear within 4–8 weeks as doses are gradually increased. However, individual responses vary significantly. Most people see meaningful weight loss over 3–6 months. Medication is most effective combined with reduced-calorie diet and regular exercise. ```
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.