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 12.2 Stone in Pounds?
12.2 stone is equal to 170.8 pounds (or 170 lbs 12.8 oz). This conversion uses the exact stone to pounds formula where 1 stone equals exactly 14 pounds. At an average UK adult height, this weight typically falls into the overweight category according to NHS health guidelines. Use our free weight converter above to switch between stone, pounds, and kilograms instantly, or continue reading for detailed conversion context and healthy weight information.
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.
Stone to Pounds Conversion Formula
To convert 12.2 stone in pounds, multiply the stone value by 14, since 1 stone = 14 pounds exactly. The calculation is straightforward: 12.2 × 14 = 170.8 lbs. This is the standard conversion used across UK weight measurements. In kilograms, 12.2 stone equals approximately 77.6 kg. Understanding how to convert between stone, pounds, and kilograms is useful when reading health information, checking NHS guidelines, or following fitness plans. The weight converter on this page lets you instantly convert between all three units. For reference, the average UK adult woman weighs around 71.6 kg (11st 3lbs), while the average UK adult man weighs approximately 85.7 kg (13st 7lbs).
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.
Is 12.2 Stone a Healthy Weight?
Whether 12.2 stone (170.8 lbs / 77.6 kg) is healthy depends on your height and individual health factors. At a typical UK adult height of 5ft 6in (168 cm), this weight gives a BMI of approximately 27.6, which falls into the overweight category according to NHS guidelines. For the same height, a healthy weight range is roughly 50–67 kg (7st 12lbs to 10st 7lbs). However, if you're taller, 12.2 stone may fall within or near a healthy range. Calculate your personal BMI using our free BMI calculator above to understand your individual health context. A GP can also provide personalised guidance on what a healthy weight means for you specifically, considering your overall health picture.
- 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 stone to pounds manually?
Multiply the stone value by 14. For example, 12.2 stone × 14 = 170.8 pounds. This works because 1 stone = 14 pounds exactly. For partial pounds, multiply the decimal part separately — so 0.2 × 14 = 2.8 pounds. Use our weight converter on this page to do this instantly.
What is 12.2 stone in kilograms?
12.2 stone equals approximately 77.6 kg. To convert stone to kg, multiply by 6.35029. So 12.2 × 6.35029 = 77.55 kg. Our weight converter above can switch between all three units — stone, pounds, and kilograms — instantly.
Is 12.2 stone considered overweight in the UK?
At most UK adult heights, 12.2 stone (77.6 kg) falls into the overweight category. At 5ft 6in, the BMI is about 27.6, which is overweight by NHS standards. However, BMI depends on height — taller individuals may be in a healthy range at this weight. Use our BMI calculator above to check your personal BMI.
What is the healthy weight range for my height?
A healthy BMI is 18.5–24.9 according to NHS guidelines. For South Asian, Chinese, Black African, or Caribbean adults, the threshold is 18.5–22.9. Calculate your healthy range using our free BMI calculator on this page, or ask your GP for personalised advice about your target weight.
How does 12.2 stone compare to average UK weight?
The average UK adult man weighs about 85.7 kg (13st 7lbs) and the average woman weighs about 71.6 kg (11st 3lbs). At 77.6 kg, 12.2 stone is slightly below the male average and above the female average, though individual healthy weights vary widely based on height and frame size.
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.