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
Cholesterol Calculator — UK NHS Health Guidance
A cholesterol calculator helps you understand your blood cholesterol levels and what they mean for your health. If you've had a blood test from your GP, a cholesterol calculator can show you where your total cholesterol, HDL, LDL, and triglycerides sit against NHS guidelines. Knowing your cholesterol is important because high cholesterol increases the risk of heart disease and stroke. This UK health guide explains how cholesterol works, what healthy levels look like, and when you should speak to your GP about your results.
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 Your Cholesterol Levels Are Measured
Your GP may order a lipid profile blood test, which measures four key numbers:
- Total cholesterol: All cholesterol in your blood combined
- LDL cholesterol: "Bad" cholesterol that builds up in arteries
- HDL cholesterol: "Good" cholesterol that protects your heart
- Triglycerides: A type of fat in your blood that raises heart disease risk
According to NHS guidance, healthy cholesterol targets for most adults are: total cholesterol below 5 mmol/L, LDL below 3 mmol/L, HDL above 1 mmol/L, and triglycerides below 1.7 mmol/L. However, if you have heart disease, diabetes, or other risk factors, your GP may recommend lower targets. A cholesterol calculator helps you see where you stand against these NHS health advice standards.
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.
Weight Management and Cholesterol
Excess weight is linked to higher cholesterol and triglyceride levels. Managing your weight through healthy eating and physical activity can improve your cholesterol profile. Our free weight converter and BMI calculator help you track your healthy weight UK targets, which supports overall cardiovascular health. Even a 5–10% reduction in body weight can lower LDL cholesterol and improve HDL levels. Combining nhs health advice on diet, exercise, and weight management creates the best chance of bringing cholesterol into a healthy range without medication.
- 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 is a healthy cholesterol level in the UK?
According to NHS guidance, a healthy total cholesterol is below 5 mmol/L. LDL (bad) cholesterol should be below 3 mmol/L, HDL (good) cholesterol above 1 mmol/L, and triglycerides below 1.7 mmol/L. If you have diabetes or heart disease, your GP may recommend lower targets. Always discuss your personal cholesterol targets with your healthcare provider.
Can I use a cholesterol calculator without a blood test?
No. A cholesterol calculator requires your actual blood test results from your GP to be accurate. You cannot estimate cholesterol from symptoms alone. Contact your GP to arrange a lipid profile blood test if you haven't had one recently, especially if you're over 40 or have risk factors like family history of heart disease.
How often should I check my cholesterol?
NHS guidance recommends cholesterol screening every 5 years for adults aged 40 and over. If you have high cholesterol, diabetes, or heart disease, your GP may recommend more frequent testing—usually every 1–3 years. Your prescriber will advise on the right schedule for you based on your health.
Does weight management affect cholesterol levels?
Yes. Excess weight raises LDL cholesterol and triglycerides whilst lowering HDL. Losing weight through diet and exercise can significantly improve your cholesterol profile. Our weight management tools help you track progress, and even small reductions (5–10% of body weight) can meaningfully improve your cholesterol numbers alongside NHS health advice on nutrition and activity.
What should I do if my cholesterol is high?
Speak to your GP. They may recommend lifestyle changes like reducing saturated fat, increasing fibre, exercising more, and managing weight. If lifestyle changes don't lower cholesterol enough after 3–6 months, your GP may prescribe statins or other cholesterol-lowering medications. A cholesterol calculator helps you track improvements over time.
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.