免费基础代谢率计算器

计算您的基础代谢率(BMR),了解身体静息状态下的热量消耗。

lbs
inches
years

BMR(卡路里/天)

1,737

静息卡路里/小时72.4

BMR (Calories/day) vs Weight

基础代谢率(BMR)计算器使用Mifflin-St Jeor公式,帮助您了解身体在完全静息状态下每天消耗的最低热量。BMR是您制定饮食计划和了解身体能量需求的基础指标,占每日总热量消耗的60%−75%。

公式

Mifflin-St Jeor公式是目前公认最准确的BMR估算公式。男性:BMR = 10W + 6.25H − 5A + 5。女性:BMR = 10W + 6.25H − 5A − 161。其中W为体重(公斤),H为身高(厘米),A为年龄(岁)。

  • BMR = 基础代谢率(千卡/天)——完全静息状态下每天消耗的热量
  • W = 体重(公斤)
  • H = 身高(厘米)
  • A = 年龄(岁)
  • +5 / −161 = 性别常数:男性 +5,女性 −161

分步解答

  1. 01输入您的性别、体重(公斤)、身高(厘米)和年龄。
  2. 02系统根据您的性别选择对应的Mifflin-St Jeor公式进行计算。
  3. 03体重和身高的增加会提高BMR,因为更大的身体需要更多能量维持运转。
  4. 04年龄增长会降低BMR,因为随着年龄增长肌肉量自然减少、代谢速度放缓。
  5. 05计算得出的BMR即为您身体在完全静息时每天所需的最低热量。

计算示例

假设一位25岁女性,体重60公斤,身高165厘米。

  1. 01体重 W = 60 kg,身高 H = 165 cm,年龄 A = 25,性别 = 女
  2. 02代入女性公式:BMR = 10 × 60 + 6.25 × 165 − 5 × 25 − 161
  3. 03BMR = 600 + 1031.25 − 125 − 161
  4. 04BMR ≈ 1,345 千卡/天
  5. 05这意味着即使整天卧床不动,她的身体每天也需要约1,345千卡来维持基本生理功能。

Mifflin-St Jeor公式比Harris-Benedict公式更现代、更准确(误差约±10%)。但BMR仍然是估算值,实际代谢率受肌肉量、激素水平、遗传因素和环境温度等影响。BMR不等于您每天应该摄入的热量——您还需要考虑日常活动和运动消耗。

常见问题

What is BMR used for?

BMR tells you the minimum calories your body needs at rest to sustain vital functions like breathing and circulation. Multiply by an activity factor to get your total daily energy expenditure (TDEE) and plan your calorie intake.

What is the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is calories burned at complete rest. TDEE (Total Daily Energy Expenditure) is your actual daily calorie burn including all activity. TDEE = BMR multiplied by an activity factor ranging from 1.2 (sedentary) to 1.9 (very active).

Does muscle increase BMR?

Yes. Muscle tissue burns more calories at rest than fat tissue. Building lean muscle mass through strength training is one of the most effective long-term strategies for increasing your BMR and supporting weight management.

How accurate is the Mifflin-St Jeor equation?

The Mifflin-St Jeor equation is considered the most accurate formula for estimating BMR in most adults, with studies showing it predicts within 10% of measured BMR for most people. It is more accurate than the older Harris-Benedict equation.

学习

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