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Calculate the minimum daily calories your body needs at rest based on gender, height, weight, and age. Get a scientific reference for your diet and fitness plans.
Enter your details to calculate
Fetal Weight Calculator
Estimate fetal weight using ultrasound measurements (BPD, AC, FL) with multiple standard obstetric formulas.
Creatinine Clearance Calculator
Enter your age, weight, and serum creatinine to quickly assess your kidney function.
Child Height Predictor Calculator
Predict a child's potential adult height range based on parents' heights and gender, providing parents with a reliable growth trend reference.
Body Fat Calculator
Calculate your body fat percentage using BMI and waist circumference formulas. Get instant body composition insights for fitness and health management.
Fetal Weight Calculator
Estimate fetal weight using ultrasound measurements (BPD, AC, FL) with multiple standard obstetric formulas.
Creatinine Clearance Calculator
Enter your age, weight, and serum creatinine to quickly assess your kidney function.
Child Height Predictor Calculator
Predict a child's potential adult height range based on parents' heights and gender, providing parents with a reliable growth trend reference.
Body Fat Calculator
Calculate your body fat percentage using BMI and waist circumference formulas. Get instant body composition insights for fitness and health management.
BMI Calculator
Calculate your Body Mass Index (BMI) and assess your health status based on height and weight. Ideal for personal health monitoring.
Are you confused about how many calories you need to consume daily to maintain your weight or lose weight healthily? A BMR calculator can help solve this problem. BMR (Basal Metabolic Rate) refers to the minimum energy expenditure required to sustain life when the human body is completely at rest, measured in kilocalories (kcal). By entering key physiological parameters such as your gender, height (cm), weight (kg), and age (years), this tool applies scientific formulas (such as the Mifflin-St Jeor equation or its variants) to quickly calculate your daily BMR. This provides a core foundation for setting personalized calorie intake goals.
Q: How exactly should I use my BMR result?
Your BMR result is the minimum number of calories required to sustain your life daily. You can multiply this number by an activity factor (e.g., 1.2-1.9) to estimate your Total Daily Energy Expenditure (TDEE), which helps you create a diet plan for muscle gain, fat loss, or weight maintenance.
Q: Why is my BMR different from what my fitness app calculates?
This is usually due to differences in the calculation formulas or parameter units used. Our tool is based on standard formulas with inputs in centimeters and kilograms to ensure consistency. Different tools may use different equations (like Harris-Benedict) or allow inputs in feet/pounds, which can lead to slight variations.
The calculation results of this tool are theoretical estimates suitable for generally healthy adults. The results are influenced by factors such as individual muscle mass, hormone levels, and overall health status. They are for reference only and cannot replace professional medical or nutritional advice. Pregnant women, nursing mothers, athletes, or individuals with specific medical conditions should consult a professional. Please ensure your input values are accurate and your age is in full years.
BMR is the cornerstone of a scientific diet plan. A typical application example: A 30-year-old male, 175 cm tall, weighing 70 kg, has a calculated BMR of approximately 1650 kcal. If he is an office worker (activity factor of about 1.55), his Total Daily Energy Expenditure (TDEE) is about 2558 kcal. To lose weight healthily (creating a daily calorie deficit of about 500 kcal), his daily calorie intake should be controlled at around 2058 kcal. It is recommended to analyze BMR in conjunction with body fat percentage and activity logs to more accurately guide long-term health management.
