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
Does Treadmill Help in Weight Loss?
Yes, treadmill exercise can help with weight loss — but it's only part of the equation. To lose weight effectively, you need a calorie deficit (consuming fewer calories than you burn), and treadmill running contributes to this by burning calories during exercise. The NHS recommends combining physical activity with healthy eating for sustainable weight management. How much weight you lose depends on exercise intensity, how often you use the treadmill, and your overall diet. Many people find that combining regular cardio with lifestyle changes produces the best results for weight loss in the UK.
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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.
How Treadmill Exercise Burns Calories
A 30-minute treadmill session burns approximately 200–400 calories, depending on your body weight, age, fitness level, and the intensity (walking vs. running). Heavier individuals burn more calories at the same intensity. To achieve meaningful weight loss, the NHS recommends losing 0.5–1 kg per week, which typically requires a calorie deficit of around 500 kcal per day. Running on a treadmill alone is unlikely to create this deficit — it must be combined with healthy eating choices.
- Walking at 3–4 mph: approximately 150–200 calories in 30 minutes
- Jogging at 5–6 mph: approximately 250–350 calories in 30 minutes
- Running at 7–9 mph: approximately 350–450 calories in 30 minutes
- High-intensity interval training (HIIT): approximately 300–400 calories in 20–30 minutes, with additional post-exercise calorie burn
To track your progress alongside treadmill exercise, use our free weight loss calculator and BMI calculator to monitor your fitness goals over time.
Clinically BackedWeight Loss
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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.
Combining Treadmill Exercise with Weight Management Strategy
Treadmill exercise works best for weight loss UK when combined with a reduced-calorie diet and other lifestyle changes. Exercise alone rarely produces significant weight loss without dietary change — research shows that weight management requires both activity and nutrition. The NHS weight loss pathway includes self-help resources, behaviour change support, and in some cases, prescription weight loss medication for eligible adults.
If you have a BMI over 30 or between 27–29.9 with weight-related health conditions (like type 2 diabetes or high blood pressure), your GP can discuss additional support options, including GLP-1 weight loss injections such as Mounjaro or Wegovy, which are prescription-only and used alongside diet and exercise. Use our free weight converter and progress tracker to log your weight loss journey and stay motivated.
- 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 long do I need to use a treadmill to see weight loss results?
Most people begin to notice weight loss results after 4–6 weeks of consistent treadmill use combined with a healthy diet. The NHS recommends at least 150 minutes of moderate-intensity activity per week (like brisk walking or jogging) for health benefits. However, diet is equally important — without a calorie deficit, treadmill exercise alone won't produce weight loss.
Is treadmill running better than walking for weight loss?
Running burns more calories per minute than walking (approximately 30–40% more), making it more time-efficient. However, walking is more sustainable for many people and puts less stress on joints. Both contribute to weight loss when combined with a calorie deficit. Choose the intensity you can stick with consistently — sustainability matters more than intensity.
Can I lose weight using only a treadmill without changing my diet?
It's very difficult to lose weight through treadmill exercise alone without dietary changes. To lose 0.5 kg per week, you need a 500 kcal daily deficit. A 30-minute treadmill session burns 200–400 calories — leaving most of the deficit to come from eating less. Diet and exercise together produce the best results.
How often should I use the treadmill for weight loss?
The NHS recommends at least 150 minutes of moderate-intensity activity weekly (about 30 minutes, 5 days a week). For faster results, combine treadmill sessions with strength training 2–3 times per week. Consistency matters more than intensity — using the treadmill regularly at a moderate pace beats occasional intense sessions.
Does treadmill exercise help with weight management long-term?
Yes, regular treadmill use supports long-term weight management by improving cardiovascular fitness and helping maintain a calorie deficit. However, sustainable weight loss requires lifestyle change, not just exercise. Many people find combining regular activity, healthy eating, and — if eligible — prescription weight loss support produces the best long-term results for weight management in the UK.
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.