Calorie Burn Calculator: Estimate Your Daily Energy Expenditure

Total daily energy expenditure (TDEE) is the standard way to estimate how many calories your body burns each day. It combines several components:

• Basal metabolic rate (BMR): the energy your body needs at complete rest — breathing, circulation, cell repair. This accounts for the largest share of your daily calorie burn for most people.
• Activity thermogenesis: calories burned through deliberate exercise, steps, and sport.
• Non-exercise activity: the energy used in fidgeting, standing, walking around, and everyday tasks — often underestimated.
• Thermic effect of food: a small amount of energy the body uses to digest and process meals.

For most adults, the average calorie burn per day sits somewhere in a fairly wide range — typically 1,600–3,000 kcal depending on body size and activity level, though figures outside this range are common. No calculator produces a perfectly precise figure; these are estimates based on validated equations, and your actual burn can vary from day to day.

On a GLP-1 medicine like Mounjaro (tirzepatide) or Wegovy (semaglutide), reduced appetite often means eating significantly less. Knowing your estimated daily calorie burn gives you a useful reference point: it helps you understand whether a calorie deficit is likely, how large it might be, and why progress sometimes slows as body weight (and therefore BMR) changes.

For a broader look at how to use this figure day-to-day, the daily calorie calculator guide walks through how intake and burn interact in practice. You can also explore how many calories to aim to burn each day for more context on activity targets.

An estimated number is only useful if you can act on it consistently — and that is where logging daily makes a real difference. GLP Trackr's steps and targets feature lets you set a daily steps goal that feeds directly into your activity picture, while the calorie target sits alongside your logged food intake so you can see your estimated deficit at a glance.

The quickest way to close the loop is the food logging tool: point your camera at a meal and the AI photo scan returns a calorie and macro breakdown in seconds — useful on days when appetite is low and meals are small. Barcode scanning and manual search are there for everything else. Over time, your logs build into a week-at-a-glance view that shows whether your intake is tracking below your estimated burn consistently, or whether there are days that pull the average off course.

All of this connects back to the wider calorie tracking hub, where you can find calculators for intake, protein, and more.

GLP Trackr is a tracking and journaling tool — it helps you observe and record your own patterns. It is not a substitute for advice from your prescriber or doctor, and any decisions about your calorie goals or activity levels are best made in conversation with your healthcare professional, who knows your full situation.

Ready to put your calorie burn estimate to work? Download GLP Trackr on the App Store or Google Play — your first 7 days are free.