Calculate your basal metabolic rate (BMR) from your weight and body fat percentage using the Katch-McArdle formula.

Click here for basal metabolic rate without considering body fat percentage

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- Calculate basal metabolic rate (from weight and body fat percentage)

Calculate your basal metabolic rate (BMR) from your weight and body fat percentage using the Katch-McArdle formula.

Click here for basal metabolic rate without considering body fat percentage

Basal Metabolic Rate (BMR) is the minimum amount of energy required to be consumed even when a person is not doing anything.

Even when you lie down and rest, organs such as the heart and lungs are active and consume energy.

The amount of energy you expend during this time is your basal metabolic rate.

The basal metabolic rate changes with age, peaking at the ages of 15-17 for men and 12-14 for women.

The calculation of the basal metabolic rate considering the body fat percentage is calculated by the Katch-McArdle formula.

First, calculate your lean body mass.

Lean body mass is the weight of the body minus the fat.

Lean body mass(kg) = Body weight(kg) x ( 100 - Body fat percentage(%) ) x 100

Since fat does not affect energy expenditure, the basal metabolic rate is calculated from the lean body mass excluding this fat.

BMR = 370 + (21.6 x Lean body mass(kg))

Katch-McArdle formula

You can check the average basal metabolic rate by gender and age in the table below.

Male

Age (years old) |
BMR Standard Value (kcal/kg Body weight/Day) |
Reference weight (kg) |
Basal metabolic rate (kcal/Day) |
---|---|---|---|

1–2 | 61 | 11.5 | 700 |

3–5 | 54.8 | 16.5 | 900 |

6–7 | 44.3 | 22.2 | 980 |

8–9 | 40.8 | 28 | 1140 |

10–11 | 37.4 | 35.6 | 1330 |

12–14 | 31 | 49 | 1520 |

15–17 | 27 | 59.7 | 1610 |

18–29 | 23.7 | 64.5 | 1530 |

30–49 | 22.5 | 68.1 | 1530 |

50–64 | 21.8 | 68 | 1480 |

65–74 | 21.6 | 65 | 1400 |

75– | 21.5 | 59.6 | 1280 |

Female

Age (years old) |
BMR Standard Value (kcal/kg Body weight/Day) |
Reference weight (kg) |
Basal metabolic rate (kcal/Day) |
---|---|---|---|

1–2 | 59.7 | 11 | 660 |

3–5 | 52.2 | 16.1 | 840 |

6–7 | 41.9 | 21.9 | 920 |

8–9 | 38.3 | 27.4 | 1050 |

10–11 | 34.8 | 36.3 | 1260 |

12–14 | 29.6 | 47.5 | 1410 |

15–17 | 25.3 | 51.9 | 1310 |

18–29 | 22.1 | 50.3 | 1110 |

30–49 | 21.9 | 53 | 1160 |

50–64 | 20.7 | 53.8 | 1110 |

65–74 | 20.7 | 52.1 | 1080 |

75– | 20.7 | 48.8 | 1010 |

Reference: "Dietary Reference Intakes 2020" Basal metabolic rate at reference weight

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