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 BMI Is 170 Pounds at Different Heights?
170 pounds equals approximately 12 stone 2 pounds (12st 2lbs) or 77.1 kg. However, your BMI — and whether this weight is healthy for you — depends entirely on your height. The same weight can fall into different NHS health categories depending on how tall you are. Use our free BMI calculator above to find your personal BMI instantly, or read on to see what 170 pounds means at common UK heights.
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.
170 Pounds BMI at Different Heights
Here's what a weight of 170 pounds (77.1 kg) means for BMI at different heights:
- At 5ft 2in (157cm): BMI of 31.2 — falls in the obese (Class I) category
- At 5ft 6in (168cm): BMI of 27.8 — falls in the overweight category
- At 5ft 10in (178cm): BMI of 24.4 — falls in the healthy weight range
- At 6ft (183cm): BMI of 22.9 — falls in the healthy weight range
The same weight can result in very different health categories. For a more accurate personal assessment, use our weight converter and BMI calculator together to check your exact BMI and see where you fall on the NHS health scale.
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.
NHS BMI Categories and What They Mean
The NHS classifies BMI into clear health categories to help you understand your weight status. A BMI below 18.5 is underweight, 18.5–24.9 is healthy weight, 25–29.9 is overweight, and 30+ is obese. However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes or very muscular people may have a high BMI without excess body fat. It also doesn't account for where fat is stored. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower BMI thresholds due to higher health risks at lower weights. Your GP can provide personalised guidance about what your weight means for your individual health.
- 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 stone?
Divide 170 by 14 (since 1 stone = 14 pounds exactly). This gives 12.14 stone, or 12 stone 2 pounds (12st 2lbs). You can also use our free weight converter to switch between pounds, stone, and kilograms instantly.
Is 170 pounds a healthy weight?
It depends on your height. At 5ft 10in, 170 pounds gives a BMI of 24.4 (healthy weight). At 5ft 2in, it gives a BMI of 31.2 (obese category). Use our free BMI calculator to check your personal health category based on your height.
What is 170 pounds in kilograms?
170 pounds equals 77.1 kilograms (77.1 kg). To convert pounds to kg, divide by 2.20462. Our weight converter handles this instantly.
What BMI category does 170 pounds fall into?
Your BMI category depends on your height, not just weight. At average UK heights, 170 pounds typically falls between overweight and healthy weight. The NHS classifies BMI as: underweight (below 18.5), healthy (18.5–24.9), overweight (25–29.9), and obese (30+).
Should I lose weight if I'm 170 pounds?
Whether weight loss is appropriate depends on your BMI, height, age, health conditions, and overall fitness. Your GP can assess whether your weight poses any health risks and discuss personalised lifestyle changes. If you're interested in weight management, our GLP-1 weight loss calculator can help you understand options.
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.