Calorie Calculator Form
Example Data Table
| Age | Gender | Weight | Height | Activity | Goal | Target Calories |
|---|---|---|---|---|---|---|
| 30 | Male | 75 kg | 175 cm | Moderate | Lose 0.25 kg weekly | About 2320 daily |
| 26 | Female | 62 kg | 165 cm | Light | Maintain | About 1900 daily |
| 38 | Male | 84 kg | 180 cm | Very active | Gain 0.25 kg weekly | About 3400 daily |
Formula Used
Mifflin St Jeor BMR for men: BMR = 10 × weight kg + 6.25 × height cm - 5 × age + 5.
Mifflin St Jeor BMR for women: BMR = 10 × weight kg + 6.25 × height cm - 5 × age - 161.
Katch McArdle BMR: BMR = 370 + 21.6 × lean body mass kg.
Total daily energy expenditure: TDEE = BMR × activity factor.
Goal adjustment: daily calorie change = weekly kg change × 7700 ÷ 7.
Protein calories: protein grams × 4. Fat calories use fat grams × 9. Carbohydrate calories use carbohydrate grams × 4.
BMI: BMI = weight kg ÷ height meters squared.
How To Use This Calculator
Enter your age, gender, weight, height, activity level, and preferred goal. Choose metric or imperial units before adding values. Add body fat percentage when available. It improves the optional lean mass estimate. Enter your planned weekly change rate. Use a slower rate for safer planning. Add consumed calories and exercise calories when using the counter feature. Press the calculate button. The results appear above the form and below the header. Use the CSV or PDF button to save your result.
Calorie Planning Guide
Understand Your Daily Energy
Calories measure energy from food and drink. Your body spends energy all day. It uses energy while resting, walking, training, digesting meals, and thinking. A calorie calculator gives a useful starting point. It should not replace personal medical advice. It helps you compare intake with estimated needs. The first important value is basal metabolic rate. This is the energy your body may use at rest. The calculator estimates it with the Mifflin St Jeor equation.
Use Activity For Better Targets
Daily movement changes calorie needs a lot. A desk worker and an athlete need different targets. The activity factor turns BMR into estimated maintenance calories. This maintenance estimate is also called total daily energy expenditure. Weight maintenance usually means eating near that number. Weight loss usually needs a calorie deficit. Weight gain usually needs a calorie surplus.
Plan Goals With Care
The calculator uses 7700 calories as an estimated value for one kilogram of body weight change. Real progress can vary. Water, sodium, hormones, sleep, training, and digestion can change scale weight. Use weekly averages instead of one daily weight reading. A small deficit is easier to follow. A moderate surplus may support muscle gain with training.
Balance Macros
Calories matter, but food quality also matters. Protein supports muscle repair and fullness. Fat supports hormones and helps absorb nutrients. Carbohydrates support training and daily energy. This tool estimates protein from body weight. It then assigns fat by calorie percentage. Remaining calories become carbohydrates. These numbers are flexible. Adjust them for culture, appetite, budget, and health needs.
Track And Review
Use the calorie counter section for daily tracking. Enter calories eaten and exercise calories burned. The calculator shows net calories and remaining calories. Review results for two to four weeks. If weight changes too fast, adjust intake. If energy drops, review sleep and food quality. A steady plan is better than a harsh plan. Choose meals you can repeat easily. Consistency makes calorie planning more useful.
FAQs
What does this calorie calculator estimate?
It estimates BMR, daily maintenance calories, goal calories, BMI, macros, net intake, and remaining daily calories based on your entered details.
Which BMR formula is used?
The main calculation uses the Mifflin St Jeor formula. If body fat is entered, it also shows a Katch McArdle estimate.
What is TDEE?
TDEE means total daily energy expenditure. It estimates the calories you burn daily after multiplying BMR by your activity factor.
Can I use pounds and inches?
Yes. Select the imperial option. The calculator converts pounds to kilograms and inches to centimeters before running the formulas.
How are goal calories calculated?
The tool starts with maintenance calories. It adds or subtracts a daily adjustment based on your weekly weight change goal.
Are the macro results fixed rules?
No. They are planning estimates. You can change protein per kilogram and fat percentage to match your preferences and needs.
Why is my remaining calorie number negative?
A negative value means your net consumed calories are higher than your calculated daily target for the selected goal.
Should I follow the result exactly?
Use it as a starting point. Adjust using real progress, hunger, energy, training performance, and advice from qualified professionals.