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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15.7 Stone in Pounds — Instant Conversion
15.7 stone is equal to 219.8 pounds (lbs). This conversion uses the standard UK formula where 1 stone equals exactly 14 pounds. If you're tracking your weight in different units, understanding how to convert between stone and pounds is useful for UK health contexts, NHS records, and fitness tracking. Our free weight converter above makes switching between kg, stone, and pounds instant and accurate.
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.
Conversion Table — Stone and Pounds Around 15.7st
To convert any weight from stone to pounds, multiply the stone value by 14. So 15.7 stone multiplied by 14 equals 219.8 pounds. If you're working backwards from kilograms to stone to pounds, first convert kilograms to stone (divide by 6.35), then multiply by 14 to get pounds.
- 15.3 stone = 214.2 lbs
- 15.4 stone = 215.6 lbs
- 15.5 stone = 217.0 lbs
- 15.6 stone = 218.4 lbs
- 15.7 stone = 219.8 lbs
- 15.8 stone = 221.2 lbs
- 15.9 stone = 222.6 lbs
- 16.0 stone = 224.0 lbs
- 16.1 stone = 225.4 lbs
- 16.2 stone = 226.8 lbs
For metric conversions, 15.7 stone equals approximately 99.8 kg. This helps when reading kilogram-based NHS guidance or comparing weight across different measurement systems.
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.
BMI and Health Context at 15.7 Stone
At 15.7 stone (99.8 kg), your BMI depends entirely on your height. For example, at an average UK female height of 5ft 3in (160cm), a weight of 15.7st gives a BMI of approximately 39.4 — falling into the obese category. At an average UK male height of 5ft 9in (175cm), the same weight gives a BMI of around 32.5 — also obese. Use our free BMI calculator above to check your personal BMI instantly based on your exact height and weight. The NHS healthy weight range varies by height, so it's important to calculate rather than assume.
- 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 15.7 stone in kilograms?
15.7 stone equals approximately 99.8 kilograms (kg). To convert stone to kg, multiply by 6.35029. This metric weight is commonly used in NHS health records and clinical assessments, so it's useful to know both measurements.
How do I convert stone and pounds to kilograms?
First convert your stone value to kg by multiplying by 6.35029, then convert pounds separately (divide by 2.20462). For example, 15st 3lb = (15 × 6.35029) + (3 × 0.453592) = approximately 96.7 kg. Our weight converter does this automatically.
Is 15.7 stone considered overweight or obese?
At 15.7 stone, your weight category depends on your height. Check your BMI using our free calculator to see your personal category. The NHS defines healthy weight range between 18.5 and 24.9 BMI, with lower thresholds for some ethnic backgrounds.
What is a healthy weight in stone for a UK adult?
A healthy weight depends on your height. For a person 5ft 9in tall, healthy weight is roughly 8st 6lb to 11st 8lb. For someone 5ft 3in tall, it's about 7st 7lb to 10st 3lb. Use our BMI calculator with your height to find your personal healthy weight range.
How many pounds are in one stone?
There are exactly 14 pounds in one stone. This is the standard conversion used across the UK. So to convert any stone value to pounds, simply multiply by 14. For example, 10 stone = 140 pounds.
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.