How Many Calories Does a Woman Need Each Day?

Calorie requirements are shaped by several interconnected factors. Understanding them helps you interpret any figure you calculate and have a more informed conversation with your healthcare professional.

Basal Metabolic Rate (BMR)

BMR is the number of calories your body uses at complete rest — the energy needed just to breathe, circulate blood, and maintain organ function. For women, BMR tends to be somewhat lower than for men of a comparable size, largely because of differences in average muscle mass. Common estimation formulas (such as the Mifflin-St Jeor equation) factor in your height, weight, and age to produce a baseline figure.

Activity Level and TDEE

Your Total Daily Energy Expenditure (TDEE) builds on BMR by accounting for how active you are. A sedentary lifestyle might mean multiplying BMR by around 1.2, while a highly active one could push that multiplier closer to 1.7–1.9. Most calculators ask you to select an activity category — sedentary, lightly active, moderately active, very active — and apply the appropriate factor. You can explore the full calculation on our calorie calculator hub or read more about daily calorie needs in general.

GLP-1 Medicines and Appetite Changes

People taking Mounjaro (tirzepatide) or Wegovy (semaglutide) commonly report a significant reduction in appetite and "food noise." This can mean eating considerably fewer calories than before — sometimes unintentionally. While eating less is often part of the intended effect, eating too little can make it harder to meet protein, fibre, and micronutrient needs. Many people find it useful to track actual intake alongside their calculated target so they can spot any large gaps. For more detail on how daily targets are framed, see how many calories you need to eat a day.

General Ranges for Adult Women

• Sedentary adult women: roughly 1,600–1,800 kcal per day
• Moderately active adult women: roughly 1,800–2,200 kcal per day
• Active adult women: roughly 2,000–2,400 kcal per day

These are general educational ranges based on population data. They are not a personal prescription — your own needs may sit outside them. Always use a calculated figure as a starting point for discussion with your prescriber or doctor, not as a hard rule to follow independently. You can also review what calories actually are and how they work for useful background context.

Knowing your estimated calorie target is one thing — consistently tracking whether you are hitting it while your appetite fluctuates on a GLP-1 medicine is another. GLP Trackr's AI food photo scan makes this genuinely effortless: point your camera at a meal and the app estimates calories, protein, and macros instantly, without manual searching or weighing.

You can set a personalised daily calorie target inside the app and see at a glance where you stand throughout the day. The targets feature also covers protein and fibre goals alongside calories, which matters on a GLP-1 journey where appetite suppression can make adequate protein intake a real challenge.

Over time, the app's insights surface patterns in your own data — for instance, how days where you hit your calorie and protein goals relate to how you feel and how your weight moves. This kind of joined-up picture is exactly what is useful to bring to a prescriber appointment. For the full suite of calorie and nutrition tools, visit our calorie calculator hub.

GLP Trackr does not provide personalised medical or dietary advice — any specific calorie target for your situation should be agreed with your healthcare professional, who knows your full history.

Ready to make food tracking feel less like a chore? Download GLP Trackr on the App Store or Google Play — your first 7 days are completely free.