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 Does a BMI of 29 Mean for Females?
A BMI of 29 puts you in the overweight category according to NHS guidelines. This means your weight is higher than the healthy range for your height, but below the obesity threshold. The good news is that even modest weight loss can have real health benefits. Using our free BMI calculator, you can check your exact BMI and understand where you fall on the NHS BMI range, then explore what steps might work for you.
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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.
Where Does BMI 29 Fall on the NHS Scale?
The NHS BMI categories define a healthy BMI as 18.5 to 24.9, making a BMI of 29 firmly in the overweight category (25.0–29.9). According to NHS guidance, this BMI threshold matters because people in this range face a higher risk of developing type 2 diabetes, high blood pressure, and cardiovascular problems compared to those in the healthy weight range.
- BMI 25.0–29.9 = Overweight (NHS classification)
- BMI 30.0–34.9 = Obese (Class I)
- BMI below 25 = Healthy weight
If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at the same weight. For these populations, a BMI of 25–27.4 is considered overweight. Our weight converter and BMI calculator can help you track whether small reductions in weight would move you into a healthier range.
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 Limitations and What Matters Beyond the Number
While BMI is a useful screening tool, it has real bmi limitations. It doesn't distinguish between muscle and fat—athletes can have a higher BMI but low body fat. BMI also doesn't account for where fat is stored, which matters for health risk. The bmi formula simply uses height and weight, missing other important factors.
Beyond BMI, your GP may also assess your waist circumference (women over 80cm face increased health risk) and overall fitness. Even losing 5–10% of your body weight can improve blood pressure, reduce diabetes risk, and ease joint strain. If you're concerned, speak to your GP about a personalised health plan.
While BMI is a useful screening tool, it has real limitations. It doesn't distinguish between muscle and fat—athletes can have a higher BMI but low body fat. BMI also doesn't account for where fat is stored, which matters for health risk. Beyond the number itself, your GP may assess your waist circumference (women over 80cm face increased health risk) and overall fitness.
The positive news: even losing 5–10% of your body weight can improve blood pressure, reduce diabetes risk, and ease joint strain. If you're concerned about your health, speak to your GP about a personalised approach. Track your progress with our free progress tracker to monitor improvements over time.
- 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.
Is a BMI of 29 considered obese?
No. A BMI of 29 falls in the overweight category (25.0–29.9) according to NHS guidelines. Obesity begins at BMI 30.0. However, a BMI of 29 does indicate elevated health risk compared to the healthy weight range of 18.5–24.9, and your GP may discuss weight management with you.
How much weight would I need to lose to reach a healthy BMI?
This depends on your height. Use our free BMI calculator to find your target healthy weight range. For most women, reaching a BMI below 25 requires losing between 5–15% of current body weight. Your GP can advise on a safe, sustainable rate of loss.
What health risks come with a BMI of 29?
At BMI 29, your risk increases for type 2 diabetes, high blood pressure, heart disease, and certain cancers compared to the healthy weight range. However, risk varies by individual factors like fitness, family history, and waist circumference. Your GP can assess your personal risk.
Can I have a BMI of 29 and still be healthy?
BMI is one screening tool, not a complete health measure. Fitness level, waist measurement, blood pressure, and cholesterol also matter. Some people at BMI 29 have no health problems, while others may have risk factors. Your GP can give personalised advice.
What's the difference between overweight and obese?
According to NHS categories, overweight is BMI 25.0–29.9 and obese starts at BMI 30.0. At BMI 29, you're just below the obesity threshold. Moving into the healthy range (below 25) offers the greatest health benefit, though any weight loss is positive.
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.