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
Healthy Weight Chart According to Your Height
Finding your healthy weight range based on your height is one of the most practical steps you can take for your health. In the UK, the NHS uses BMI (body mass index) combined with height to define healthy weight ranges for adults. Rather than a single "ideal" weight, there's actually a healthy range based on your height and individual factors. This guide explains how height affects healthy weight and gives you the tools to calculate your own personal range using NHS-aligned thresholds.
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.
How Height Determines Your Healthy Weight Range
Your height is the foundation for calculating a healthy weight using BMI (body mass index). The NHS defines a healthy BMI as 18.5 to 24.9 for most adults. Because BMI accounts for both weight and height, taller people naturally have higher healthy weight ranges than shorter people.
Healthy weight range formula:
- Lower bound: 18.5 × height (m)²
- Upper bound: 24.9 × height (m)²
For example, an adult who is 5ft 8in (1.73m) tall has a healthy weight range of approximately 55 to 75kg (8st 10lbs to 11st 10lbs). Someone 5ft 4in (1.63m) tall would have a lower range of around 49 to 66kg (7st 10lbs to 10st 5lbs). Use our free BMI calculator above to find your exact healthy weight range instantly based on your personal height and current weight.
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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.
UK Health Guidance and Tools for Weight Management
The NHS recommends that adults maintain a healthy weight as part of overall health maintenance. If you're outside your healthy range, losing or gaining weight at a sustainable rate of 0.5 to 1kg per week is recommended. Your GP can provide personalised health advice based on your individual circumstances, medical history, and any weight-related health conditions.
MyWeightCheck provides free UK health information tools including a weight converter to switch between stone, pounds, and kilograms, and a BMI calculator tailored to NHS guidance. For those exploring weight management options, our GLP-1 weight loss calculator can help you understand potential outcomes with prescription medication alongside lifestyle changes.
- 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 the healthy weight range for someone 5ft 10in tall?
At 5ft 10in (1.78m), a healthy weight range using NHS BMI guidelines is approximately 59 to 79kg (9st 4lbs to 12st 6lbs). Use our BMI calculator above to enter your exact height and get your personal range instantly.
Does healthy weight vary by age or gender?
BMI categories are the same for men and women above 18 years old. However, your GP may consider additional factors like muscle mass, medical history, and ethnicity when assessing your personal healthy weight. For people of South Asian, Chinese, or Black African heritage, the NHS recommends slightly lower BMI thresholds.
How do I calculate my healthy weight range from my height?
Multiply your height in metres by itself, then multiply by 18.5 (lower bound) and 24.9 (upper bound). For example, at 1.70m: 1.70² × 18.5 = 53.5kg and 1.70² × 24.9 = 71.9kg. The weight converter on this page makes this calculation instantly.
What if I'm outside the healthy weight range for my height?
If you're consistently outside the healthy range, speaking with your GP is a good first step. They can assess your individual health, discuss any underlying factors, and suggest appropriate support—whether lifestyle changes, NHS weight management programmes, or other options.
Is BMI the only measure of healthy weight?
BMI is a useful screening tool but has limitations. It doesn't distinguish muscle from fat, and waist circumference also matters for health. The NHS recommends considering both BMI and waist measurement together for a fuller picture of health risk.
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.