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 122 Kg in Stones and Pounds?
122 kilograms converts to 19 stones and 3 pounds (19st 3lbs) using the standard metric to imperial weight conversion. To convert kilograms to stone, divide the kilogram value by 6.35029. This weight can fall into different NHS health categories depending on your height. Use our free BMI calculator above to find out your personal BMI at this weight, and see where you sit on the NHS weight categories. Understanding your weight in both metric and imperial measurements helps you make informed decisions about your health.
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.
122 Kg BMI at Different Heights
Your BMI depends entirely on your height, not just your weight. At 122 kg, here's what your BMI would be at six common UK adult heights:
- 160 cm (5ft 3in): BMI of 47.7 — Severely obese (Class III)
- 165 cm (5ft 5in): BMI of 44.8 — Severely obese (Class III)
- 170 cm (5ft 7in): BMI of 41.5 — Severely obese (Class III)
- 175 cm (5ft 9in): BMI of 38.6 — Obese (Class II)
- 180 cm (5ft 11in): BMI of 37.6 — Obese (Class II)
- 185 cm (6ft 1in): BMI of 35.6 — Obese (Class II)
These BMI values use the standard NHS formula: weight (kg) ÷ height (m)². To calculate your exact BMI, enter your height into our free BMI calculator on this page.
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.
Understanding BMI Categories and Limitations
According to NHS guidelines, a BMI below 18.5 is underweight, 18.5–24.9 is healthy weight, 25–29.9 is overweight, and 30 or above is obese. At 122 kg, most heights will result in a BMI in the obese range. However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes with high muscle mass may have elevated BMI but low body fat. BMI also doesn't account for where fat is stored, which affects health risk. For a more complete health picture, discuss your weight with your GP, who can assess your individual circumstances alongside waist measurement and other health markers.
- 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 122 kg to stones and pounds manually?
Divide 122 by 6.35029 to get stones (19.23 stones). Multiply the decimal (0.23) by 14 to get pounds (3.2 lbs). So 122 kg = 19st 3lbs. Our free weight converter above does this instantly for any weight.
At what height would 122 kg be a healthy weight?
At 122 kg, achieving a healthy BMI (18.5–24.9) would require a height of approximately 2.2 metres (7ft 2in), which is not realistic for adults. At this weight, most adults will fall into the obese category. Your GP can advise on appropriate weight ranges for your specific height and health profile.
Is 122 kg considered obese?
Yes, at most UK adult heights, 122 kg falls into the obese category according to NHS BMI classifications. However, BMI is a screening tool only and doesn't account for muscle mass, frame size, or other health factors. Your GP can provide personalised guidance on your health status.
Can I use the GLP-1 weight loss calculator to estimate weight loss from this starting point?
Yes, our GLP-1 weight loss calculator can help you project potential weight loss using prescription weight loss medications like Mounjaro or Wegovy if you're eligible. This is based on average clinical trial outcomes — individual results vary significantly depending on your specific circumstances.
What should I do if I weigh 122 kg and want to lose weight?
Start by discussing your health and weight goals with your GP. They can assess your overall health, recommend appropriate lifestyle changes (diet and exercise), and discuss whether prescription weight loss treatment might be suitable for you. The NHS recommends losing no more than 0.5–1 kg per week for sustainable, healthy weight loss.
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.