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 70 Lbs in Stone?
70 pounds (lbs) is equal to 5 stone exactly. In the UK, we typically measure body weight using stone and pounds, so understanding how to convert between imperial and metric units is helpful for health tracking. Whether you're checking your weight against NHS health guidelines, tracking progress with our free weight converter, or understanding your BMI, knowing your weight in stone makes it easy to compare against UK health charts and recommendations.
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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.
Converting 70 Lbs to UK Measurements
70 lbs converts to exactly 5 stone (5st 0lbs). To break this down further, 70 lbs is also equivalent to approximately 31.75 kg.
The conversion formula is straightforward: divide pounds by 14 to get stone. So 70 ÷ 14 = 5 stone. The UK uses stone and pounds as the standard body weight measurement, where 1 stone equals exactly 14 pounds. This makes 70 lbs a neat conversion—it's a whole stone with no remainder.
For health and medical purposes, healthcare professionals in the UK may use kilograms for clinical records, but when discussing weight with patients, GPs often use stone and pounds because it's what most UK adults understand. Our free weight converter makes switching between kg, stone, and lbs instant and accurate.
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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.
70 Lbs in UK Health Context
At 70 lbs (5 stone), this weight is considered very light for most UK adults. For reference, the average UK adult man weighs around 13st 7lbs (85.7 kg), and the average UK adult woman weighs around 11st 3lbs (71.6 kg). A weight of 70 lbs would typically only apply to children, teenagers, or adults of very petite build.
If you're tracking your own weight or monitoring a child's weight, the NHS recommends using age and sex-specific growth charts for children under 18, as BMI categories for adults don't apply to young people. For personalised guidance on whether your weight is healthy, your GP can assess your individual health context.
- 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.
How do I convert 70 lbs to stone quickly?
Divide 70 by 14. The answer is 5 stone exactly. Remember: 1 stone = 14 pounds. You can also use our free weight converter above to switch between lbs, stone, and kg instantly.
What is 70 lbs in kilograms?
70 lbs equals approximately 31.75 kg. To convert, multiply pounds by 0.453592. This metric conversion is useful if you're checking weight against NHS clinical guidelines, which often use kilograms.
Is 70 lbs a healthy weight for an adult?
70 lbs is very light for most UK adults. It would typically only be a healthy weight for a young child or teenager. For personalised health guidance based on your age, height, and medical history, consult your GP or use our free BMI calculator for context.
Why does the UK use stone and pounds instead of kilograms?
The UK is one of the few countries that still uses stone and pounds for body weight, alongside metric measurements. Most UK adults think of their weight in stone, so GPs and health services often use this unit in conversations, even though clinical records may use kg.
Can I use 70 lbs to calculate my BMI?
Yes. Convert your height to inches and your weight to pounds, then use the formula: (weight in lbs ÷ height in inches²) × 703. Alternatively, our free BMI calculator above handles all conversions automatically—just enter your weight and height.
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.