Use proven formulas, activity levels, and goal adjustments. Review macros, BMI, and healthy ranges instantly. Download results, compare scenarios, and support balanced eating decisions.
Mifflin-St Jeor: Men: 10W + 6.25H - 5A + 5. Women: 10W + 6.25H - 5A - 161.
Harris-Benedict: Men: 88.362 + 13.397W + 4.799H - 5.677A. Women: 447.593 + 9.247W + 3.098H - 4.330A.
Katch-McArdle: 370 + 21.6 × lean body mass in kilograms.
TDEE: BMR × activity factor.
Goal Calories: TDEE plus or minus the selected calorie adjustment.
Protein Calories: grams × 4. Carb Calories: grams × 4. Fat Calories: grams × 9.
BMI: weight in kilograms ÷ height in meters squared.
A calorie allowance gives structure to food planning. It helps you match intake with body needs. This improves consistency. It also lowers random eating decisions. Good targets support fat loss, maintenance, or weight gain.
This calculator estimates basal metabolic rate first. That value reflects energy used at rest. It then applies an activity multiplier. The result is total daily energy expenditure. After that, the selected goal changes calories up or down.
No formula fits every person equally well. Mifflin-St Jeor is widely used for general planning. Harris-Benedict is another common estimate. Katch-McArdle can help when body fat is known. It uses lean body mass, which often improves precision.
Calories matter most for weight change. Macros help shape food quality and recovery. Protein supports satiety and muscle retention. Fat supports hormones and meal balance. Carbohydrate supports training, movement, and daily energy. A simple macro split turns numbers into practical meals.
Your target is a starting point, not a fixed rule. Real needs change with stress, sleep, movement, and training. Use the result for two weeks. Track body weight, hunger, energy, and adherence. Then adjust slightly if progress stalls.
Use this tool to compare maintenance, loss, and gain scenarios. Plan calories per meal. Review BMI and a healthy weight range. Export results for records or coaching notes. For medical nutrition advice, use a qualified health professional. This tool supports planning, not diagnosis.
| Profile | Age | Sex | Weight | Height | Activity | Goal | Estimated Target |
|---|---|---|---|---|---|---|---|
| Office Worker | 32 | Female | 68 kg | 165 cm | Lightly Active | Maintain | 2025 kcal/day |
| Gym Beginner | 27 | Male | 78 kg | 178 cm | Moderately Active | Fat Loss | 2240 kcal/day |
| Runner | 35 | Female | 60 kg | 170 cm | Very Active | Mild Gain | 2485 kcal/day |
| Strength Athlete | 29 | Male | 90 kg | 183 cm | Athlete | Gain | 3590 kcal/day |
No. It is an evidence-based estimate. Real needs shift with movement, sleep, stress, digestion, and body composition. Use it as a starting point and review your progress after one or two weeks.
Mifflin-St Jeor works well for many adults. Harris-Benedict is also useful. Katch-McArdle is better when you know body fat percentage because it uses lean mass.
Your activity level may raise total needs. Taller, heavier, younger, and more active users often burn more calories daily. Review the selected multiplier before changing food intake.
Yes. Choose a fat loss goal. A moderate deficit is often easier to follow and sustain. Severe deficits can reduce training quality, satiety, and recovery.
Macros turn calorie targets into food planning. Protein helps preserve lean mass. Fat supports hormones. Carbohydrate supports energy and training. Together they make calorie goals easier to apply.
You can. Many people prefer consistent intake for simplicity. Others use slightly higher calories on training days. Weekly adherence matters more than perfect daily matching.
No. BMI is only one screening tool. It does not measure body fat distribution, strength, fitness, or medical history. Use it with other health information.
People with pregnancy, diabetes, eating disorders, kidney disease, or other medical conditions should consult a qualified clinician or dietitian before making nutrition changes.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.