What BMI is underweight for a child?
5th percentile
Underweight: BMI is below the 5th percentile age, gender, and height. Healthy weight: BMI is equal to or greater than the 5th percentile and less than the 85th percentile for age, gender, and height. Overweight: BMI is at or above the 85th percentile but less than the 95th percentile for age, gender, and height.
How is underweight BMI calculated?
Body Mass Index is a simple calculation using a person’s height and weight. The formula is BMI = kg/m2 where kg is a person’s weight in kilograms and m2 is their height in metres squared. A BMI of 25.0 or more is overweight, while the healthy range is 18.5 to 24.9.
What is underweight for a 12 year old?
Based on BMI, a child is underweight if her BMI is less than the fifth percentile. A child is within the healthy range if her BMI is between the fifth and 85th percentile. Overweight children fall between the 85th and 95th percentile, and obese children have a BMI equal to or greater than the 95th percentile.
How accurate is BMI for underweight?
BMI is not an accurate predictor of health because it does not account for body fat percentage or body fat distribution. In addition, BMI cannot accurately predict the health of different demographics and races because it was created with data from only white Europeans.
How much should an 8 year old weigh?
Main Digest
| Babies to Teens Height to Weight Ratio Table | ||
|---|---|---|
| 6 yrs | 44.0 lb (19.9 kg) | 45.5″ (115.5 cm) |
| 7 yrs | 49.5 lb (22.4 kg) | 47.7″ (121.1 cm) |
| 8 yrs | 57.0 lb (25.8 kg) | 50.5″ (128.2 cm) |
| 9 yrs | 62.0 lb (28.1 kg) | 52.5″ (133.3 cm) |
What should my child weigh?
Your child is a healthy weight if their BMI for age and sex is from the 5th to below the 85th percentile. A child below the 5th percentile is below a healthy weight (underweight), and a child at the 85th percentile and above is above a healthy weight.
How do you calculate BMI example?
Body Mass Index (BMI) = (weight (kg) / height (m2) Example: Your weight = 68 kg / Your height = 1.65 m (165 cm) BMI Calculation: 68 รท 1.652 = 24.98.
What weight should a 12 year old be in KG?
Main Digest
| Babies to Teens Height to Weight Ratio Table | ||
|---|---|---|
| 10 yrs | 70.5 lb (31.9 kg) | 54.5″ (138.4 cm) |
| 11 yrs | 81.5 lb (36.9 kg) | 56.7″ (144 cm) |
| 12 yrs | 91.5 lb (41.5 kg) | 59.0″ (149.8 cm) |
| Teenage Girls – 13 to 20 Years |
How much should a 11 year old weigh in kg?
What is the average child weight by age?
| Age | Boys | Girls |
|---|---|---|
| 11 | 5st 8.5lb (35.6 kg) | 5st 11.4lb (36.9 kg) |
| 12 | 6st 4lb (39.9 kg) | 6st 7.5lb (41.5 kg) |
| 13 | 7st 1.9lb (45.3 kg) | 7st 3lb (45.8 kg) |
| 14 | 7st 14lb (50.8 kg) | 7st 6.9lb (47.6 kg) |
What is the most common cause of being underweight?
A person may be underweight due to genetics, improper metabolism of nutrients, lack of food (frequently due to poverty), drugs that affect appetite, illness (physical or mental) or the eating disorder anorexia nervosa.
What BMI is dangerously underweight?
BMI Ranges
| BMI | BMI Range |
|---|---|
| Between 15 and 16 | Severely underweight |
| Between 16 and 18.5 | Underweight |
| Between 18.5 and 25 | Healthy weight |
| Between 25 and 30 | Overweight |