Understanding Calorie Burn and Weight Loss
Your body burns calories continuously — through basic functions like breathing and circulation (your basal metabolic rate, or BMR), through daily movement, and through deliberate exercise. The total is often called your Total Daily Energy Expenditure (TDEE). When your calorie intake consistently falls below your TDEE, your body draws on stored energy and weight loss tends to follow over time.
The 7,700 kcal rule of thumb
A widely used educational estimate is that 1 kg of body fat stores roughly 7,700 kcal of energy. So, in broad terms, creating a daily deficit of around 500–750 kcal might be associated with losing approximately 0.5–1 kg per week. These are general figures — real-world results differ based on muscle mass, hormones, age, and how your body adapts. If you want to explore how many calories it takes to lose a pound, that page breaks down the same principle using different units.
What counts as calorie burn?
- BMR: the calories your body uses at complete rest — typically the largest portion of your daily burn
- Non-exercise activity: walking, fidgeting, standing — often more impactful than formal exercise
- Exercise: structured activity that adds on top of your baseline
- Thermic effect of food: the energy used to digest what you eat
Because so many factors are involved, a personalised deficit target is best discussed with your prescriber or doctor — general ranges here are for educational context only.
Calories to burn and GLP-1 medicines
People already prescribed Mounjaro or Wegovy often notice reduced appetite, which naturally affects how many calories they consume day to day. This makes the intake side of the equation easier to manage for many, but tracking both sides — what you eat and how active you are — gives you a much clearer picture. You can read more about how many calories to aim for when losing weight or explore how many calories you need to burn specifically for a deeper look at the numbers.
average weekly weight change in the first 16 weeks of Mounjaro & Wegovy use*
Tracking the right four numbers — weight, waist, protein and dose — turns a noisy chart into a clear story. That's the loop GLP-1 users keep coming back for.
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Track Your Calorie Burn and Progress with GLP Trackr
Knowing the theory is one thing — seeing your own numbers in one place is where it gets genuinely useful. GLP Trackr's targets feature lets you set a daily calorie goal based on your own situation, so every meal you log is measured against a number that actually means something to you.
Food logging is built to be effortless: snap a photo of your meal and the AI nutrition scanner estimates calories, protein, and macros instantly — no manual searching needed. On days when appetite is low (common on GLP-1 medicines), quick photo logging means you can still keep an eye on whether you're eating enough protein without any friction.
Beyond calories, the insights and analytics section connects your food data with your weight log, steps, and daily check-ins, so you can see how your activity and intake relate to your actual progress over time. The GLP Trackr calorie calculator hub brings together all the tools to help you understand your numbers on a GLP-1 journey.
Tracking what you burn and what you eat consistently — even imperfectly — tends to produce better results than guessing. GLP Trackr makes that consistency straightforward.
General calorie figures here are educational. Your own targets and any changes to your activity or eating plan are best agreed with your prescriber or doctor, who knows your full health picture.
Ready to put the numbers to work? Download GLP Trackr on the App Store or Google Play and explore your calorie targets free for 7 days — no commitment needed.
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Start every day with a 60-second wellness check-in. Log how you're feeling, track nausea, appetite, energy, and mood — giving you and your care team a complete picture of how your medication is working.
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Log every dose with a single tap. Track your dose history, phase in your cycle, estimated medication levels, and upcoming injection dates — with reminders so you never miss a scheduled shot.
Hydration Reminders
Staying hydrated is especially important on GLP-1 medications. Set daily water targets, log intake throughout the day, and receive smart nudges when you're falling behind your goal.
Smart Meal Planning
Personalized meal plans built around your current dose phase and side effects. Every meal is GLP-1 optimized — high in protein, gentle on the stomach, and scaled to your reduced appetite.
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Browse 50+ high-protein, GLP-1-friendly recipes filtered by meal type, prep time, and dietary needs. Every recipe includes full nutrition info, step-by-step instructions, and tips for eating with side effects.
Progress Analytics
Beautiful, easy-to-read charts show your weight loss trajectory, weekly nutrition trends, medication responses, and wellbeing scores over time — turning raw data into genuine insights.
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Snap a photo of any meal and get a full nutrition breakdown in seconds — calories, protein, carbs, fat, and fibre. No searching. No manual logging. Just point, snap, and track.
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Log walks, workouts, and movement with activity targets that flex with your energy levels. On lower-energy dose days, gentler targets keep you moving without burning out.
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Frequently asked questions.
A commonly used educational estimate is that 1 kg of body fat equates to roughly 7,700 kcal. Creating a daily deficit of around 500–750 kcal might therefore be associated with losing approximately 0.5–1 kg per week, though individual results vary considerably based on many personal factors.
Both contribute to a calorie deficit. Most people find a combination of moderately reduced intake and increased activity more sustainable than relying on one alone. The right balance depends on your circumstances — your prescriber or doctor can help you find an approach that suits you.
There is no single universal answer — it depends on your current weight, metabolic rate, activity level, and how quickly you want to lose weight. A general starting point is a daily deficit of 300–750 kcal below your total daily energy expenditure, but personal targets are best agreed with your healthcare professional.
These prescription medicines can reduce appetite, which may naturally lower calorie intake for many people. The same deficit principles still apply, but tracking both food intake and activity helps you see the full picture. Any changes to your plan should be discussed with your prescriber.
GLP Trackr lets you set a daily calorie target and log food via AI photo scan, barcode, or search. It connects your intake data with your weight and activity logs so you can see trends over time — making it easier to stay consistent with your calorie goals.