BMI Calculator NHS: Adults can use their body mass index, or BMI, to determine if they fall into the underweight, healthy, or overweight categories based on their height and weight.
You can use the calculator to see how your weight stacks up against average numbers. Your weight divided by the square of your height is your body mass index, or BMI = weight/height2.
How to determine your BMI
By dividing your weight by the square of your height, you can determine your BMI.
For instance, if you weigh 70 kg and are 1.75 m tall, your BMI can be calculated as follows:
- 3m2 is 1.75m x 1.75m.
- 3m2 ÷ 70kg = 23.
- Your BMI of 23 puts you within the range of a healthy weight. The numbers have been rounded up.
This can also be done in imperial units. To determine which range you fall into, however, you can use the BMI calculator above instead of calculating it yourself.
Determine your adult body mass index (BMI)
Make use of this service to:
- Verify an adult’s BMI who is at least 18 years old.
- Learn more about the following steps.
It is not advisable to diagnose any symptoms with this tool. Get in touch with your neighbourhood pharmacy or general practitioner’s office if you’re concerned about your weight.
Who is not supposed to use this tool?
Use of this tool is not advised if you or the person you are using it for:
- are younger than eighteen.
- have a pregnancy
- believe you may have an eating issue or have been diagnosed with one.
- possess a health issue that impacts your height
What you’ll require
To utilise the calculator, you must be aware of your:
- Height
- Weight
Background in ethnicity
Additionally, the calculator will enquire about your cultural heritage.
This is because individuals with a lower BMI are more likely to experience health issues if they are Asian, Black African, African-Caribbean, or Middle Eastern in ethnicity.
The calculator will provide you with more precise guidance regarding your BMI result if you provide information about your ethnic origin.
Your outcome
A number representing your BMI will be shown, along with one of the following weight categories:
- Underweight
- A healthy weight
- Overweight
- Fat
You might be asked to measure your waist after receiving your results. This might assist you in determining whether you are putting too much weight on your abdomen.
What your outcome indicates
Heart disease and type 2 diabetes are two long-term illnesses that are more likely to occur in people with a higher BMI.
The determination of BMI is only one indicator of health. It is unable to distinguish between fat and muscle.
For instance, even though you have minimal body fat, you might be considered overweight or obese if you have a lot of muscle.
For this reason, measuring your waist may give you a better indication of your general health.
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What your BMI indicates
Underweight
You may not be getting enough vitamins, minerals, and other nutrients for your body to function properly if you are underweight. Your skin, hair, and teeth may be affected, or you may experience excessive fatigue. Women are more likely to develop osteoporosis and may experience irregular periods.
To find out why your BMI is low and how to gain weight in a healthy way, you should consult your physician.
A healthy weight
One indication that you are the appropriate weight for your height is if your BMI falls within the healthy weight range. However, keep in mind that your body mass index (BMI) does not reveal your body type, level of physical activity, or the proportions of fat and muscle in your body.
Thus, monitor your weight fluctuations and your overall health, nutrition, and activity.
Being overweight
You may be more susceptible to diseases including type 2 diabetes, heart disease, gallstones, and cancer if your BMI is in the overweight range.