How Many Calories Should You Burn a Day?

Your total daily energy expenditure (TDEE) has three main components, and knowing each one helps you understand where your calorie burn actually comes from.

Basal Metabolic Rate (BMR)

BMR is the energy your body uses just to stay alive — breathing, circulating blood, maintaining organs — while completely at rest. It typically accounts for around 60–70% of total daily calorie burn for most people. BMR is influenced by body composition: muscle tissue burns more energy at rest than fat tissue, which is one reason body composition matters beyond the number on the scale.

Activity and Movement

Physical activity — both structured exercise and everyday movement like walking, climbing stairs, or fidgeting — adds to your daily burn on top of BMR. This is the most variable component and the one most directly in your control. On a GLP-1 medicine, some people find that reduced appetite also affects energy levels early on, so it is worth paying attention to how your activity patterns shift over time.

Thermic Effect of Food

Digesting and processing food burns a small amount of energy too — roughly 10% of your total intake for most people. Protein has a higher thermic effect than carbohydrates or fat, which is one reason higher-protein eating is often discussed in the context of GLP-1 journeys.

What About Breakfast and Individual Meals?

There is no universal rule for how many calories to consume at breakfast or lunch — it depends on your total daily target and personal preference. General guidance suggests a moderate breakfast (often somewhere in the 300–500 calorie range for many adults) and a balanced lunch, but the right split for you is worth discussing with your prescriber or a registered dietitian. For a deeper look at how many calories breakfast should be on a GLP-1 journey, including what tends to sit well when appetite is low, that page covers the detail. You can also explore how many calories a person should consume in a day for broader context on daily intake targets.

How Much Should You Aim to Burn?

A calorie deficit — burning more than you consume — is generally what drives fat loss. A modest, sustainable deficit (often cited in general nutrition guidance as roughly 300–500 calories per day) is typically more manageable than an aggressive one, especially when appetite is already reduced on a GLP-1 medicine. However, going too low in calorie intake can affect energy, muscle mass, and how you feel, so any specific target is worth agreeing with your prescriber or doctor. For guidance on how many calories you should eat each day alongside your activity level, that page walks through the intake side of the equation.

Calculating your daily calorie burn manually is useful once — but tracking it consistently day after day is where GLP Trackr comes in. The app lets you set a personalised calorie target and log what you eat throughout the day using AI-powered photo scanning: point your camera at a meal and get an instant breakdown of calories, protein, and macros without manual entry. For moments when photo scanning is not practical, barcode scanning and a food search make logging quick even when appetite is low and meals are small.

Beyond calories, GLP Trackr also tracks your daily steps and activity alongside food intake, so you can see your energy balance — consumed versus burned — in one place rather than across multiple apps. The weight loss calculator can help frame how your calorie burn relates to your progress over time.

The insights feature surfaces patterns from your own data — for example, how your activity levels on certain days relate to your weight trend — so the numbers become genuinely useful rather than just a daily chore. You can also set targets for protein, water, fibre, and steps alongside calories, keeping the full picture of your GLP-1 journey in one app.

For a broader overview of calorie tracking tools available on the platform, visit the calorie calculator hub.

GLP Trackr is an information and tracking tool. Any specific calorie or activity target should be agreed with your prescriber or doctor — they know your full health picture and can advise on what is appropriate for you.

Ready to put a number to your daily burn and start tracking it effortlessly? Download GLP Trackr on the App Store or Google Play and explore it free for your first 7 days.