Diet & Nutrition Calculators
Use 3 free online health and fitness calculators for BMI, calories, nutrition, body composition, pregnancy, wellness, and exercise. Choose a category below to find the right health calculator.
Calorie, macro, and protein calculators
Nutrition calculators start from energy need, then split that energy into macros. BMR and TDEE estimate how many calories maintain weight at a stated activity level. The calorie and macro calculator turns that budget into protein, carbohydrate, and fat targets.
Protein intake can be estimated from body weight and activity even when you are not building a full macro split. These tools are planning estimates, not meal plans or medical nutrition therapy.
Which nutrition tool to open
| Calculator | Use it when you need |
|---|---|
| BMR & TDEE Calculator | Calorie need from BMR and activity |
| Calorie & Macro Calculator | Calories split into protein, carbs, and fat |
| Protein Intake Calculator | Daily protein target from body weight |
Frequently asked questions
What is the difference between BMR, TDEE, and macros?
BMR is estimated resting energy use. TDEE adds activity. Macro targets divide a calorie budget into protein, carbohydrate, and fat.
Can I use the protein calculator without a full meal plan?
Yes. The protein calculator is useful when you only need a daily protein range from body weight and activity.
Are these calorie numbers a diet prescription?
No. They are estimates from the equations and activity level you select. Health conditions, medications, and training plans can require professional guidance.
- Calorie & Macro CalculatorCalculate your daily calorie needs and macronutrient targets (protein, carbs, fats) for weight loss, muscle gain, or maintenance. Personalized nutrition calculator with multiple diet options including balanced, low-carb, high-protein, and keto. Perfect for meal planning and fitness goals.Open tool
- Meal Timing CalculatorMeal Timing - Calculate your health metrics and get insights for better wellness.Open tool
- Protein Intake CalculatorCalculate your optimal daily protein needs based on your body weight, fitness goals, age, and activity level. Get personalized protein targets for muscle gain, fat loss, weight maintenance, or athletic performance. Includes protein-rich food examples and timing recommendations.Open tool