Daily Calorie & Macro Calculator: Calories, TDEE & Macros

Free daily calorie and macro calculator

Maintaining, losing, or gaining weight starts with understanding roughly how many calories your body uses each day. This calculator estimates your resting energy burn, converts it into total daily energy expenditure, then adjusts the number based on your goal. It also provides a practical macro split so the calorie target becomes easier to use in real meals.

The calculator uses the Mifflin-St Jeor equation for BMR, activity multipliers for TDEE, and goal-based adjustments for fat loss or muscle gain. The output is not a medical prescription. It is a planning estimate you can compare with real-world progress.

How this calculator works

First, the calculator estimates BMR, which is the energy your body uses at rest for basic functions. Second, it multiplies BMR by an activity factor to estimate TDEE. Third, it adjusts calories for your selected goal. Finally, it assigns protein, fat, and carbohydrates using calorie math: protein and carbs provide about four calories per gram, while fat provides about nine calories per gram.

BMRResting calorie estimate

TDEEBMR plus activity

Goal caloriesTDEE adjusted for your target

MacrosProtein, carbs, and fat grams

How to use your calorie result

Use the result as a starting point for two to three weeks. Weigh yourself consistently, watch your weekly average, and adjust by small amounts if your trend does not match your goal. A target that is slightly imperfect but easy to follow is usually more useful than an aggressive number you cannot maintain.

Example calculation

A 30-year-old male who weighs 180 lb, is 70 in tall, and trains several times per week may have a maintenance estimate near the mid-2,000 calorie range. If fat loss is selected, the calculator creates a moderate deficit and gives a higher-protein macro target to support fullness and muscle retention.

Common mistakes

Choosing an activity level based on one hard workout instead of a normal week.

Cutting calories too hard and then quitting after a few days.

Ignoring protein and fiber while focusing only on total calories.

Changing targets daily instead of watching a consistent weekly trend.

Frequently asked questions

How accurate is this calorie calculator?

It is a starting estimate, not a perfect measurement. Real needs change with muscle mass, daily movement, sleep, stress, medication, hormones, and tracking accuracy.

What is the difference between BMR and TDEE?

BMR estimates calories burned at rest. TDEE estimates total daily calories after activity and normal movement are included.

Which activity level should I choose?

Choose the level that matches an average week, not your best day. Many people overestimate activity, so a conservative choice is usually more useful.

Should I eat exactly the number shown?

No. Treat the number as a planning target and compare it with your real weight trend over two to three weeks.

Is this medical advice?

No. It is educational information and does not replace advice from a doctor, registered dietitian, or qualified professional.