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 170lb in kilograms?
170 pounds converts to approximately 77.1 kilograms using the standard UK weight conversion. This weight falls into the overweight category for most adults according to NHS guidance, though your health context depends on your height, age, and overall fitness. Understanding your weight in both imperial and metric units helps you track your health effectively alongside NHS health advice. Use our free weight converter above to check conversions between pounds, kilograms, and stone instantly.
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.
Converting 170lb to metric measurements
170lb = 77.1kg exactly. To convert pounds to kilograms, divide the pound value by 2.20462. This is the standard conversion used across UK health services and NHS guidance.
- 170lb = 77.1kg
- 170lb = 12 stone 2 pounds
- 170lb = 55.3 stone (decimal)
The weight converter on this page lets you switch between all UK measurements instantly. For NHS health assessments, your GP will typically use kilograms, but many UK adults find it helpful to understand their weight in stone and pounds as well. At 77.1kg, your BMI and healthy weight range depend entirely on your height — use our free BMI calculator to find your personal BMI instantly.
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 170lb a healthy weight?
Whether 170lb (77.1kg) is healthy depends on your height. According to NHS guidance, a healthy BMI falls between 18.5 and 24.9 for most adults. At 77.1kg, you could be in the healthy, overweight, or obese category depending on your height — for example, someone 6ft 2in (188cm) at 170lb would have a healthy BMI around 24.6, while someone 5ft 6in (168cm) would be overweight at BMI 28. Use the BMI calculator above to check your personal BMI and healthy weight range. If you're concerned about your weight or health, your GP can provide personalised UK health information and support.
- 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 170 pounds to kilograms?
Divide 170 by 2.20462 to get 77.1kg. This is the exact metric conversion. Our free weight converter above does this instantly for any weight value you enter.
What is 170lb in stone and pounds?
170lb equals 12 stone and 2 pounds exactly. In UK measurements, one stone = 14 pounds. You can use our weight converter to switch between all imperial and metric units.
Is 170lb overweight according to NHS guidance?
It depends on your height. NHS uses BMI to assess healthy weight, which combines weight and height. At 170lb, you could be healthy, overweight, or obese depending on how tall you are. Calculate your personal BMI above to find out.
What's the healthy weight range for someone at 170lb?
This depends entirely on your height. Use the BMI calculator on this page to find your healthy weight range instantly. For most adults, the NHS recommends a BMI between 18.5 and 24.9.
Can I use 170lb as a weight loss target?
That depends on your current weight and height. If you're interested in weight management or weight loss support, your GP can discuss whether this is a suitable target for you alongside NHS health guidance and personalised advice.
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.