The body mass index (BMI), which is a measure of body fat, is calculated based on weight and height. It applies to both men and women. To calculate your BMI, you can either consult the tables below or use the tool provided.
Use metric or standard measures to enter your height and weight.
Click “Compute” to see your BMI.
This calculator calculates the body mass index (BMI), and the BMI weight status for adults aged 20 and over.
Calculate Your Body Mass Index
What is BMI?
BMI is a number that is calculated from the person’s height and weight. The BMI is a reliable indicator of body fatness and can be used to screen for potential health problems.
Adults aged 20 and over are able to interpret BMI using standard weight status categories. These categories apply to men and women of any age and body type.
High body fatness can be indicated by a high BMI. The BMI screen for weight categories that could lead to health issues, but does not determine the body fatness and health of an individual.
BMI = kg/m2 where kg is the person’s body mass in kilograms and m2 is their height in meters. A BMI greater than 25.0 is considered overweight. The healthy range is 18.5- 24.9. The BMI is applicable to all adults aged 18-65.
Your BMI should not be below 18.5. Your 18.5-24.9 BMI falls within the healthy weight or normal range. Your BMI should be between 25.0 and 29.9 to fall within the overweight category. If your BMI is more than 30.0, you are considered obese.
The BMI is an indicator of body weight but is not the same thing as having your actual body fat percentage measured. BMI does not take into account frame size, body composition, or gender.
High BMI may be due to increased muscle mass, rather than higher body fatness in athletes. A person with a high BMI would generally be obese or overweight. However, this does not necessarily apply to athletes.
To assess an individual’s risk factors and health, a trained healthcare provider should conduct appropriate health assessments.
Although the correlation between BMI and body fatness can be quite strong, even though two people may have the same BMI, the level of body fatness could differ.
- Women tend to have higher body fat at the same BMI as men.
- The BMI can be adjusted to adjust the amount of body fat.
- On average, older adults have more body fat at the same BMI as younger adults.
- Athletes have less body fat at the same BMI as non-athletes.
BMI is a better indicator of body fat than BMI. However, people with higher body fat and BMI are more accurate. A person with a high BMI (e.g. 35 kg/m2) will be more likely to have high body fat.
However, a relatively high BMI could also indicate high body fat. To assess an individual’s risk factors and health, a trained healthcare provider should conduct appropriate health assessments.
|less than 16.5||severe underweight|
|less than 18.5||underweight|
|30.0–34.9||obesity class I|
|35.0–39.9||obesity class II|
|40 or greater||obesity class III|
BMI chart for adults
BMI chart for children and teens, age 2-20
BMI Chart For Boys With Age from 2 to 20 years
BMI Chart For Girls With Age from 2 to 20 years
Frequently Asked Questions
What is the best BMI for a senior woman?
A BMI between 25-27 is better for older adults than a lower 25. For those over 65, a slightly higher BMI can help prevent osteoporosis (thinning of your bones).
How can I tell if I'm overweight?
To calculate your BMI, use the tool provided on this page. A BMI greater than 24.9 could indicate that you are overweight. These are only approximate values and should not be considered as a guide.
Talk to your primary doctor if you have concerns about your BMI, or if you want to lose weight.
Height and weight chart with corresponding BMI. Based on this table you can determine a person's weight relative to their height. This table only applies to adults 20 years of age and older. Sources from the National Institutes of Health (NIH)
|Height||Normal weight BMI 19–24||Overweight BMI 25–29||Obesity BMI 30–39||Severe obesity BMI 40+|
|4 ft 10 in (58 in)||91–115 lb||119–138 lb||143–186 lb||191–258 lb|
|4 ft 11 in (59 in)||94–119 lb||124–143 lb||148–193 lb||198–267 lb|
|5ft (60 in”)||97–123 lb||128–148 lb||153–199 lb||204–276 lb|
|5 ft 1 in (61 in)||100–127 lb||132–153 lb||158–206 lb||211–285 lb|
|5 ft 2 in (62 in)||104–131 lb||136–158 lb||164–213 lb||218–295 lb|
|5 ft 3 in (63 in)||107–135 lb||141–163 lb||169–220 lb||225–304 lb|
|5 ft 4 in (64 in)||110–140 lb||145–169 lb||174–227 lb||232–314 lb|
|5 ft 5 in (65 in)||114–144 lb||150–174 lb||180–234 lb||240–324 lb|
|5 ft 6 in (66 in)||118–148 lb||155–179 lb||186–241 lb||247–334 lb|
|5 ft 7 in (67 in)||121–153 lb||159–185 lb||191–249 lb||255–344 lb|
|5 ft 8 in (68 in)||125–158 lb||164–190 lb||197–256 lb||262–354 lb|
|5 ft 9 in (69 in)||128–162 lb||169–196 lb||203–263 lb||270–365 lb|
|5 ft 10 in (70 in)||132–167 lb||174–202 lb||209–271 lb||278–376 lb|
|5 ft 11 in (71 in)||136–172 lb||179–208 lb||215–279 lb||286–386 lb|
|6 ft (72 in)||140–177 lb||184–213 lb||221–287 lb||294–397 lb|
|6 ft 1 in (73 in)||144–182 lb||189–219 lb||227–295 lb||302–408 lb|
|6 ft 2 in (74 in)||148–186 lb||194–225 lb||233–303 lb||311–420 lb|
|6 ft 3 in (75 in)||152–192 lb||200–232 lb||240–311 lb||319–431 lb|
|6 ft 4 in (76 in)||156–197 lb||205–238 lb||246–320 lb||328–443 lb|
What percent body fat should a woman have?
A woman should consume between 10-13% and 31% fat. More than 32% are considered obese. Although studies have shown that fat measurement can give a better picture of health and risks, it is difficult to get an exact measurement.
What is the most attractive body fat percentage female?
Participants in the study deemed women with 16 percent body fat to be the most attractive. However, women with 19% fat were deemed the most healthy. Both of these numbers are below healthy body fat for young Caucasian females, which is 21-33% of total body weight.
how much to walk according to bmi calculator?
Popular fitness trackers and monitors recommend 10,000 steps per day. A 2016 study found that 10,000 steps are the ideal amount. This is equivalent to walking approximately 5 miles. To achieve a healthy BMI, people who are interested in walking to lose weight should aim to walk at least 10,000 steps per day.
Is BMI a good indicator of health?
Both adults and children can use BMI to determine their body fat. BMI is not a way to determine body fat. It should not be used for diagnosis. BMI should instead be used to monitor weight status and to screen for potential weight problems.
How useful is body mass index?
The Body Mass Index is a good indicator of body fat
Obesity is defined as having too much body fat, so much that it poses a threat to your health. Calculating the ratio of their body weight and their height squared is a reliable way to determine if someone has too much fat.
Why BMI is not a good measure of health?
BMI (Body Mass Index) is a measure of body fat. It is calculated based on height and weight. It does not account for muscle mass, bone density, and overall body composition. It is therefore not a good indicator of health.
- Image credits: Internet