About this calculator
Total daily energy expenditure (TDEE) is the total amount of calories your body consumes in a day, including basal metabolic rate (BMR) and activity expenditure.
BMR was calculated using the Mifflin-St Jeor formula: for men: (10 × weight in kilograms) + (6.25 × height in centimeters) - (5 × age) + 5; for women: (10 × weight in kilograms) + (6.25 × height in centimeters) - (5 × age) - 161.
Multiply the BMR by the activity factor to get TDEE. To lose weight, you need to consume fewer calories than TDEE; to gain muscle, you need to consume more calories than TDEE. Accurate knowledge of calories is the foundation of any nutrition plan.
What it calculates
Calories / TDEE Calculator is based on the complete Chinese reference article for this calculator. It explains what the tool calculates, when to use it, and how the result relates to the underlying formula.
Formula
Use the formula shown by Calories / TDEE Calculator together with the values entered in the calculator. Keep units consistent and check any restrictions before interpreting the answer.
Inputs
Enter the required values for Calories / TDEE Calculator. Use numeric inputs where requested, keep variable names consistent, and review the selected unit or calculation mode before calculating.
- Required numeric values.
- Relevant units or variable names.
- Calculation mode or target value when available.
Example
A typical example uses simple values so you can compare the input, formula, and output. This helps verify that the calculator is being used correctly.
| Step | What to check | Purpose |
|---|---|---|
| 1 | Enter sample values | Confirm how Calories / TDEE Calculator reads inputs |
| 2 | Review the formula | Understand the calculation method |
| 3 | Compare the result | Use the answer correctly |
How to interpret the result
The result should be read together with the formula, input values, and any displayed calculation steps. If the calculator shows multiple values, compare each label before using the answer.
Common mistakes
Most mistakes come from missing units, entering values in the wrong field, or ignoring formula restrictions. Recheck the inputs if the result looks unexpected.
- Check units and signs.
- Do not leave required inputs blank.
- Confirm that the formula conditions are satisfied.
How to use
Using the calorie calculator requires entering a few basic information. First, select the gender (male/female) because the basal metabolic rate of men and women is different. Then enter age, height (cm) and weight (kg), which are key parameters for calculating BMR.
Next, choose your activity level: sedentary (office job, little exercise), light activity (exercise 1-3 days per week), moderate activity (exercise 3-5 days per week), high activity (exercise 6-7 days per week), very active (physical labor or training multiple times per day). Activity level determines the BMR multiple factor.
Finally, choose your goal: lose fat, gain muscle, or maintain weight. After clicking "Calculate", the system will display: BMR (basal metabolic rate), TDEE (total daily consumption), recommended calorie intake, and distribution of the three major nutrients (grams and calories of protein, carbohydrates, and fat). You can develop a meal plan based on this data and use the food calorie chart to control your daily intake.
Main features
This calorie calculator is fully functional and scientific. The internationally recognized Mifflin-St Jeor formula is used to calculate BMR, which is more accurate than traditional formulas. Supports 5 activity level options to accurately match your lifestyle. Provides three goal modes: fat loss, muscle gain, and maintenance, and automatically adjusts calorie recommendations.
Not only does it calculate total calories, it also provides detailed distribution recommendations for the three major nutrients. The recommended proportions of protein, carbohydrates, and fat are based on the principles of sports nutrition to ensure nutritional balance. Grams and calories for each nutrient are displayed so you can plan a specific diet.
The interface clearly displays all key data: BMR, TDEE, target intake, and nutrient distribution at a glance. Supports switching between metric units (kilograms, centimeters) and imperial units (pounds, inches). Calculation results can be saved or printed for long-term tracking. Completely free, based on scientific research and suitable for healthy people of all ages.
Use cases
Calorie calculator plays an important role in multiple health management scenarios. People who want to lose weight use a calculator to determine their daily calorie target, create a reasonable calorie deficit (usually 300-500 kcal), and avoid metabolic decline caused by excessive dieting. Use a food diary to record daily intake to ensure it is within target range.
Bodybuilders need a caloric surplus to support muscle growth, and the calculator helps determine appropriate caloric and protein intake. It is generally recommended to consume 1.6-2.2 grams of protein per kilogram of body weight. Athletes and fitness enthusiasts adjust caloric intake according to training intensity to ensure adequate energy.
Nutritionists and health coaches use calculators to create personalized diet plans for clients. During medical rehabilitation, patients control caloric intake and manage chronic diseases such as diabetes and hypertension according to medical advice. Calculate additional caloric needs for pregnant and nursing women.
Used by the general population to maintain a healthy weight, understand their energy needs, and avoid overeating or malnutrition. Older adults should adjust their diet based on their activity level to prevent muscle loss. Ensure adequate nutritional intake for adolescents during their growth and development period.