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
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What Is 70.8 kg in Pounds and BMI?
70.8 kg converts to approximately 156 pounds. However, your BMI—the key health indicator—depends entirely on your height. This guide shows what BMI you'd have at different heights, where it falls in NHS categories, and what it means for your health. Use our free BMI calculator above to find your exact BMI instantly, then refer to this chart to understand what that number means.
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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 by height. Here's what you can expect across common UK heights:
- 160 cm (5ft 3in): BMI = 27.6 (Overweight, NHS category)
- 165 cm (5ft 5in): BMI = 26.0 (Overweight, NHS category)
- 170 cm (5ft 7in): BMI = 24.5 (Healthy weight, NHS category)
- 173 cm (5ft 8in): BMI = 23.7 (Healthy weight, NHS category)
- 175 cm (5ft 9in): BMI = 23.1 (Healthy weight, NHS category)
- 180 cm (5ft 11in): BMI = 21.9 (Healthy weight, NHS category)
These examples show how height dramatically affects your BMI at the same weight. Someone 160 cm tall at 70.8 kg falls into the overweight category, while someone 180 cm at the same weight is in the healthy range. This is why height context matters when assessing weight health.
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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.
NHS BMI Categories and What They Mean
The NHS classifies BMI into five categories to help you understand health risk:
- Underweight: BMI below 18.5
- Healthy weight: BMI 18.5–24.9
- Overweight: BMI 25.0–29.9
- Obese (Class I): BMI 30.0–34.9
- Severely obese: BMI 40 and above
Important: BMI is a screening tool, not a diagnosis. It doesn't account for muscle mass, bone density, or where fat is stored. Your GP can provide personalised advice about what your BMI means for your individual health. If you're concerned about your weight or health, speak to your GP who can assess you properly and discuss options including lifestyle changes or referral to specialist weight management services if appropriate.
- 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 converts to 11 stone 2 pounds (approximately). To convert kilograms to stone, divide by 6.35. The metric to imperial weight conversion is useful for UK adults who typically use stone and pounds, though your GP and NHS use kilograms for clinical records.
Is 70.8 kg a healthy weight?
It depends on your height. At 70.8 kg, you could be in the healthy weight range (if you're 170 cm or taller) or overweight (if you're shorter). Use our free BMI calculator above with your exact height to check your personal BMI and NHS category instantly.
What's the healthy weight range for someone 170 cm tall?
For 170 cm, the NHS healthy weight range is approximately 53 to 71 kg (8st 5lbs to 11st 2lbs). At 70.8 kg, you'd have a BMI of 24.5, which falls within the healthy range. However, individual factors like fitness, medical history, and waist circumference also matter.
How do I use the weight converter to check different units?
Our free weight converter on this page converts between kg, stone, and pounds instantly. Enter 70.8 kg and it will show you the stone and pounds equivalent, plus your BMI at different heights so you can see the full health picture.
Should I worry about my weight at 70.8 kg?
Not necessarily. Weight alone doesn't determine health. Your BMI, combined with fitness level, diet, medical history, and waist circumference, gives a better picture. If you have concerns, your GP can assess you holistically and discuss whether any changes might benefit your health.
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.