卡路里计算器
使用Mifflin-St Jeor公式计算基础代谢率（BMR）和每日总能量消耗（TDEE）。
BMR
kcal
TDEE（每日卡路里）
kcal
减重（-500千卡）
kcal
增重（+500千卡）
kcal
活动水平系数
| 等级 | 系数 | 说明 |
|---|---|---|
| 久坐 | 1.200 | 案头工作，不运动 |
| 轻度 | 1.375 | 每周轻度运动1-3次 |
| 中度 | 1.550 | 每周中度运动3-5次 |
| 活跃 | 1.725 | 每周高强度运动6-7次 |
| 超高活跃 | 1.900 | 运动员或体力劳动 |
Frequently Asked Questions
How are daily calorie needs calculated?
Daily calorie needs are calculated using Basal Metabolic Rate (BMR) multiplied by an activity factor. The Mifflin-St Jeor equation is most commonly used: BMR = 10 × weight(kg) + 6.25 × height(cm) – 5 × age – 161 for women (or +5 for men).
What is TDEE and how does it relate to weight loss?
Total Daily Energy Expenditure (TDEE) is your BMR multiplied by your activity level. To lose weight, eat 500 calories below your TDEE for about 1 pound (0.45 kg) of weight loss per week. A deficit greater than 1,000 calories/day is generally not recommended.
How does activity level affect calorie needs?
Activity multipliers range from 1.2 (sedentary) to 1.9 (very active). A sedentary person with a BMR of 1,500 needs about 1,800 calories, while the same person with an active lifestyle may need 2,550 calories. Exercise can add 200–600 calories to daily needs.
Is the Mifflin-St Jeor equation better than Harris-Benedict?
The Mifflin-St Jeor equation (1990) is considered more accurate than the Harris-Benedict equation (1919) for most people, estimating BMR within 10% of actual values. The Harris-Benedict equation tends to overestimate calorie needs by about 5%.