How Many Calories Should I Have Each Day?

There is no single calorie number that fits everyone. Several factors interact to determine how much energy your body uses each day — and how much you might aim to consume if weight management is a goal.

Basal Metabolic Rate and Total Daily Energy

Your basal metabolic rate (BMR) is the energy your body needs at rest just to keep basic functions going. On top of that, your total daily energy expenditure (TDEE) adds the calories burned through daily movement, exercise, and daily activity. A modest calorie deficit below TDEE is the general principle behind gradual weight loss; a very large deficit tends to be unsustainable and harder on the body.

How GLP-1 Medicines Change the Picture

Many people taking Mounjaro (tirzepatide) or Wegovy (semaglutide) find their appetite reduces noticeably — sometimes called a drop in "food noise". This can mean eating significantly less without deliberately trying to. It is common to wonder what a sensible daily calorie intake looks like on Mounjaro or whether your reduced appetite means you are eating enough. For a broader look at daily intake guidance, the recommended daily calorie intake for adults page covers general educational ranges in more detail.

Breakfast and Meal Distribution

Splitting calories across the day matters too. A common general approach is to keep breakfast moderate and protein-rich — many nutrition educators suggest something in the region of 300–500 calories for a morning meal, though this varies widely by individual need. On a GLP-1 medicine, smaller and more frequent meals often sit more comfortably, particularly in the early weeks. For more on structuring your intake, see daily calorie guidance at a glance.

Protein Within Your Calorie Total

Not all calories function the same way. Getting enough protein — often suggested at 1.2–1.6 g per kilogram of body weight for people actively managing weight, though your prescriber or doctor can advise what is right for you — helps preserve muscle while in a calorie deficit. Prioritising protein within whatever calorie total you are working toward is widely recommended on a GLP-1 journey. For specific goal-setting, the page on calorie targets for weight loss explores this further.

Knowing your target is one thing; hitting it consistently is another — especially when appetite fluctuates week to week on a GLP-1 medicine. GLP Trackr's AI-powered food photo scan makes logging effortless: point your camera at a meal and the app estimates the calories, protein, and macros in seconds. There is no need to search a database or weigh every ingredient.

Once you have a calorie target in mind (set with your prescriber or doctor), you can enter it in the app and the daily check-in keeps a running total across meals. The targets feature lets you set goals for calories, protein, water, and fibre — so you can see at a glance whether you are on track without any mental arithmetic. Over time, the insights and analytics section surfaces patterns: for example, how your calorie intake on any given week correlates with how your weight moved.

All of this lives alongside your dose logs, weight entries, and side-effect notes in one place — so when you visit your prescriber, you have a clear picture of your journey to share.

A note on targets: general educational calorie ranges are useful starting points, but your ideal daily intake is personal. Always confirm specific targets with your prescriber or doctor, who knows your full health history. GLP Trackr helps you record and visualise what you eat — it is a tracking companion, not a substitute for clinical advice.

Ready to take the guesswork out of calorie tracking? Download GLP Trackr on the App Store or Google Play and explore everything free for your first 7 days. You can also explore the full calorie calculator hub for more tools and guidance.