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 BMI Is 70.8 Kg?
70.8 kg converts to approximately 11 stone 1.6 lbs in UK measurements. However, your BMI depends on your height — the same weight can fall into different NHS health categories depending on how tall you are. Use our free BMI calculator above to find your exact BMI and see which NHS category applies to you personally. Understanding your BMI gives you a clearer picture of where your weight sits on the NHS health scale.
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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.
70.8 Kg BMI at Different Heights
At 70.8 kg, your BMI varies significantly depending on your height. Here are typical examples:
- At 160 cm (5ft 3in): BMI 27.6 — falls into the overweight category (NHS 25.0–29.9)
- At 165 cm (5ft 5in): BMI 26.0 — overweight category
- At 170 cm (5ft 7in): BMI 24.5 — healthy weight category (NHS 18.5–24.9)
- At 175 cm (5ft 9in): BMI 23.1 — healthy weight category
- At 180 cm (5ft 11in): BMI 21.9 — healthy weight category
- At 185 cm (6ft 1in): BMI 20.7 — healthy weight category
To convert kilograms to stone accurately, divide your weight by 6.35029 — so 70.8 kg ÷ 6.35029 = 11.15 stone (11 stone 2.1 lbs). Our free weight converter above makes this calculation instantly.
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 BMI Categories and Limitations
The NHS uses standard BMI ranges to assess weight health for UK adults: healthy weight is 18.5–24.9, overweight is 25.0–29.9, and obese is 30.0 and above. However, BMI has important limitations — it does not distinguish between muscle and fat, so muscular individuals may have a higher BMI despite low body fat. BMI also does not account for where fat is stored on your body. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at the same BMI level. Your GP can provide personalised guidance about what your BMI 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 70.8 kg in stone and pounds?
70.8 kg equals approximately 11 stone 2.1 lbs (or 11.15 stone). To convert kilograms to stone, divide the kilogram value by 6.35029. Our free weight converter above performs this calculation instantly in both directions.
Is 70.8 kg a healthy weight?
Whether 70.8 kg is healthy depends entirely on your height and overall health profile. At shorter heights this weight may fall into the overweight category; at taller heights it may be in the healthy range. Use our BMI calculator to check your personal BMI, then discuss the result with your GP for personalised advice.
How do I convert metric to imperial weight measurements?
To convert kilograms to pounds, multiply by 2.20462. To convert to stone, divide kilograms by 6.35029. One stone equals exactly 14 pounds. Our weight converter tool above handles all these conversions instantly and accurately.
What does BMI mean and how is it calculated?
BMI (Body Mass Index) is calculated as weight in kilograms divided by height in metres squared. It's a screening tool that categorises weight into health ranges. However, BMI does not measure body fat percentage directly and has limitations — it doesn't account for muscle mass or fat distribution. Our free BMI calculator performs this calculation for you.
Are NHS BMI categories different for different ethnic backgrounds?
Yes. The NHS recommends lower BMI thresholds for adults of South Asian, Chinese, Black African, and Black Caribbean descent because these groups have higher health risks at lower BMI levels. Their healthy weight range begins at 18.5 but extends only to 22.9 instead of 24.9. Your GP can advise on thresholds relevant to your background.
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.