Individual basal metabolism is generally calculated as basal metabolic rate, which is commonly calculated as (pulse rate + pulse pressure) – 111.
Basal metabolic rate refers to the energy requirement of the human body in a fasting, awake and quiet state with an ambient temperature of 18 to 25°C to maintain basic physiological activities of the body. The amount of basal metabolic energy required per square meter of body surface area per unit of time is called the basal metabolic rate. The common formula for calculating basal metabolic rate is (pulse rate + pulse pressure) – 111.
Factors affecting the basal metabolic rate include body surface area and body composition, age, sex, ambient temperature and climate, and endocrine (the thyroid gland has the greatest influence).
People who need to determine their personal basal metabolism can also visit a hospital to have it determined and calculated by a doctor.