Advanced Calorie Calculator
Formula Used
This calculator uses the Mifflin St Jeor equation. It first estimates basal metabolic rate. Then it multiplies BMR by an activity factor. This creates maintenance calories. Goal calories are added or removed after that.
Male BMR: 10 × weight + 6.25 × height - 5 × age + 5
Female BMR: 10 × weight + 6.25 × height - 5 × age - 161
Maintenance: BMR × activity factor
Target: Maintenance + goal adjustment + exercise calories + custom adjustment
Protein: Weight × selected protein grams per kg
Fat: Target calories × selected fat percentage ÷ 9
Carbs: Remaining calories ÷ 4
Example Data Table
| Person | Age | Weight | Height | Activity | Goal | Estimated Target |
|---|---|---|---|---|---|---|
| Example A | 28 | 70 kg | 172 cm | Moderate | Fat Loss | About 2,000 calories |
| Example B | 35 | 82 kg | 180 cm | Light | Maintain | About 2,450 calories |
| Example C | 24 | 64 kg | 168 cm | Very Active | Muscle Gain | About 2,850 calories |
How to Use This Calculator
Enter your age, height, weight, and gender first. Choose the activity level that best describes your normal week. Select your fitness goal next. Add exercise calories only when you want them included in the target. Choose your protein level and fat percentage. Then press the calculate button. Review the calorie target, macro split, and meal targets. Download the result for meal planning.
My Fitness Pal Calorie Calculator Guide
Simple Daily Planning
A calorie target gives your nutrition plan a clear starting point. This tool estimates your daily needs from body details, movement, and goal choice. It can support fat loss, maintenance, or lean weight gain. The result is not a strict medical prescription. It is a planning estimate for everyday tracking.
Why Calories Matter
Calories describe the energy supplied by food and drinks. Your body uses that energy for breathing, moving, training, digesting, and recovery. When intake stays below your needs, body weight often falls. When intake stays above your needs, body weight often rises. The right target depends on your current body, your habits, and your goal speed.
Macro Balance
This calculator also divides calories into protein, fat, and carbohydrates. Protein supports muscle repair and fullness. Fat supports hormones, cells, and vitamin absorption. Carbohydrates help fuel training and daily movement. A balanced split is easier to follow than a random number. You can adjust protein and fat inputs to match your preferred diet style.
Activity and Goals
Activity level has a large effect on maintenance calories. A desk worker and a daily athlete may need very different targets, even at the same weight. Goal settings then adjust the estimate. A mild deficit is easier to sustain. A larger deficit may work faster, but hunger can increase. A small surplus is often better for controlled muscle gain.
Meal Targets
Meal targets make the result practical. Dividing calories and macros by meals can simplify breakfast, lunch, dinner, and snacks. You do not need perfect numbers at every meal. Weekly consistency matters more than one exact plate. Use the meal target as a guide. Then compare progress after two or three weeks.
Tracking Tips
Track weight trends, energy, hunger, training, and sleep. Change calories slowly when progress stalls. Small changes are easier to judge. Use accurate food portions when possible. Include sauces, drinks, oils, and snacks. These items can change the final total. Keep notes, review patterns, and adjust with patience.
FAQs
1. What does this calculator estimate?
It estimates BMR, maintenance calories, goal calories, and daily macros. It also divides those targets by your selected meals.
2. Which formula is used?
It uses the Mifflin St Jeor equation for BMR. Then it applies an activity factor and goal adjustment.
3. Can I use it for fat loss?
Yes. Choose mild or standard fat loss. The calculator subtracts calories from maintenance to create a deficit.
4. Can I use it for muscle gain?
Yes. Choose mild or standard muscle gain. The calculator adds calories to support a controlled surplus.
5. What activity level should I select?
Choose the level that matches your normal week. Include work, walking, training, and active hobbies.
6. Why are carbs calculated last?
Protein and fat are set first. Remaining calories are assigned to carbohydrates after those targets are calculated.
7. Are the results exact?
No estimate is perfect. Use the result as a starting point. Adjust after tracking progress for several weeks.
8. Can I download my result?
Yes. Use the CSV button for spreadsheets. Use the PDF button for saving or printing your calorie plan.