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
What Is 79kg in Pounds and What BMI Does It Give?
79 kilograms is approximately 174.2 pounds in weight. However, your BMI at this weight depends entirely on your height — the same weight can be healthy or overweight depending on how tall you are. Using our free BMI calculator above, you can enter 79kg and your height to discover exactly where you fall on the NHS BMI scale. Below, we show what BMI this weight gives at different common UK heights and which health category each falls into.
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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.
79kg BMI at Different Heights
At 79kg, your BMI varies significantly with height. Here's what this weight means on the NHS scale at common UK heights:
- 5ft 2in (158cm): BMI of 29.8 — Overweight (just below obese)
- 5ft 5in (165cm): BMI of 26.2 — Overweight (healthy range starts at 18.5)
- 5ft 8in (173cm): BMI of 26.4 — Overweight
- 5ft 10in (178cm): BMI of 25.0 — Just within healthy weight range
- 6ft 0in (183cm): BMI of 23.6 — Healthy weight
- 6ft 3in (190cm): BMI of 21.9 — Healthy weight
The NHS healthy BMI range is 18.5 to 24.9. At 79kg, you're in the healthy range only if you're taller than approximately 5ft 10in. Use our weight converter tool to see 79kg in stone and pounds format, then check your personal BMI using the calculator on this page.
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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.
Understanding NHS BMI Categories and Limitations
The NHS divides BMI into clear categories: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), and obese (30.0 and above). However, BMI has important limitations. It doesn't distinguish between muscle and fat — an athlete may have a high BMI but low body fat. BMI also doesn't account for where fat is stored; waist circumference matters for health risk. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds because these groups face higher cardiovascular and diabetes risk at the same BMI. Your GP can provide personalised advice about what your weight means for your individual health.
- 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 79kg in stones and pounds?
79kg equals approximately 12 stone 6 pounds (12st 6lbs). To convert kilograms to stone, divide by 6.35. Use our free weight converter above for instant conversions between metric and imperial measurements.
Is 79kg a healthy weight?
It depends on your height. At 79kg, you're in the NHS healthy BMI range if you're over 5ft 10in tall. If you're shorter, 79kg may fall into the overweight category. Calculate your personal BMI using the tool on this page for your exact height.
What's the difference between kg and lbs?
Kilograms (kg) are metric weight units used by the NHS and most of Europe. Pounds (lbs) are imperial units. One kilogram equals 2.2 pounds. The UK commonly uses both kg for clinical purposes and stone/pounds for everyday reference.
Why does BMI change with height?
BMI measures weight relative to height squared — BMI = weight (kg) ÷ height (m)². The same weight on a taller person is less concentrated, resulting in a lower BMI. This is why 79kg is healthy for someone 6ft tall but overweight for someone 5ft 2in.
Should I be concerned if my BMI is in the overweight category?
The NHS recommends discussing BMI with your GP, especially if you have weight-related health conditions like high blood pressure or type 2 diabetes. Even modest weight loss of 5–10% can have meaningful health benefits. Your GP can advise on lifestyle changes or, if appropriate, weight management support.
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.