Free BMI Calculator for Men and Women - Body Mass Index Table & Chart
Use our free BMI calculator for men and women to instantly calculate your Body Mass Index, see your BMI category based on WHO standards, and find your healthy weight range. Works in both kg/cm and lbs/ft.
BMI reflects the relationship between your weight and height, but it does not measure your daily calorie requirements. To estimate how many calories you need each day for weight loss, weight maintenance, or weight gain, try our Calorie Calculator.
BMI Calculator
Calculate your Body Mass Index and find your healthy weight range in seconds.
Body Mass Index (BMI) Table For Men and Women
The BMI table below shows pre-calculated Body Mass Index values across a range of heights and weights, making it easy to find your BMI without a calculator. Values are colour coded by WHO category (from underweight through to obesity) so you can instantly see where your weight falls for your height. The table covers heights from 155 cm to 200 cm (5’1″ to 6’7″) and weights from 45 kg to 130 kg (99 lbs to 287 lbs), and works for both men and women aged 18 and over.
BMI values are calculated using the standard formula: weight (kg) ÷ height (m)². For reference only — consult a healthcare professional for personalised advice.
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Body Mass Index (BMI) Formula
This BMI calculator uses the standard Body Mass Index (BMI) formula developed by the Belgian mathematician and statistician Adolphe Quetelet. BMI is calculated by dividing your weight in kilograms by your height in meters squared.
BMI provides a simple way to estimate whether your body weight falls within a healthy range for your height. It is widely used by healthcare professionals, public health organizations, and researchers as a screening tool for weight-related health risks.
While BMI can be useful for most adults, it does not directly measure body fat percentage, muscle mass, bone density, or body composition. For example, athletes and highly muscular individuals may have a higher BMI despite having low body fat levels.
How Is BMI Calculated?
BMI (Body Mass Index) is calculated using a simple formula that divides your weight by the square of your height. It is the standard screening tool used by the WHO and healthcare professionals worldwide.
Example
A person who weighs 75 kg (165 lbs) and is 175 cm (5 ft 9 in) tall:
Result: 24.5 — Normal Weight ✓
WHO BMI Categories
The following BMI categories are commonly used for adults:
These ranges are intended for men and women aged 18 years and older and may not be appropriate for children, teenagers, pregnant women, older adults, or athletes.
⚠️ BMI is a screening tool, not a diagnostic measure. It does not account for muscle mass, age, sex, or ethnicity. Always consult a healthcare professional for personalised advice.
Is BMI Accurate?
Is BMI a Good Measure of Health?
BMI is a useful screening tool, but it should not be used as the only measure of health. Two people with the same BMI may have very different levels of body fat, muscle mass, and overall fitness.
For a more complete picture of your health, consider additional measurements such as:
- Waist circumference
- Body fat percentage
- Physical activity level
- Blood pressure
- Cholesterol levels
- Blood sugar levels
BMI works best when used alongside other health indicators rather than as a standalone measurement.
What Should I Do After Calculating My BMI?
Your BMI result is a useful starting point for understanding whether your weight is within a healthy range for your height. If your BMI falls within the healthy weight category, focus on maintaining your current habits through balanced nutrition, regular physical activity, and adequate sleep.
If your BMI indicates that you are underweight, overweight, or obese, consider using this result as a signal to take a closer look at your overall health and lifestyle. Small, sustainable changes to your eating habits and activity levels are often more effective than extreme diets or rapid weight-loss plans.
Keep in mind that BMI is only one health indicator and does not account for muscle mass, body composition, age, or fitness level. For a more complete picture of your health, consider tracking additional measurements such as waist circumference, body fat percentage, and physical fitness.
If your goal is to lose, maintain, or gain weight, our Calorie Calculator can help estimate your daily calorie needs based on your age, sex, weight, height, and activity level. Understanding your calorie requirements is often the next step after calculating your BMI.
Frequently Asked Questions
Common questions about BMI, healthy weight ranges, and what your result means.
According to the World Health Organization (WHO), a healthy BMI for adults is between 18.5 and 24.9. A BMI below 18.5 is considered underweight, while a BMI of 25 or above is classified as overweight. A BMI of 30 or above falls into the obesity range. These thresholds apply to most adults aged 18 and over, regardless of sex.
The standard BMI formula is the same for both men and women and uses only weight and height. However, BMI does not account for differences in body composition between sexes. Women naturally carry a higher percentage of body fat than men at the same BMI. For this reason, BMI is best used as a general screening tool rather than a precise measure of body fat or health for either sex.
BMI has several well-known limitations. It does not distinguish between fat mass and muscle mass, meaning that athletes and muscular individuals may be classified as overweight despite having low body fat. It also does not account for age, ethnicity, bone density, or where fat is distributed on the body. Waist circumference and body fat percentage are often more informative measures alongside BMI.
BMI is calculated by dividing your weight in kilograms by the square of your height in metres. The formula is: BMI = weight (kg) ÷ height (m)². For example, a person who weighs 75 kg and is 1.75 m tall has a BMI of 75 ÷ (1.75 × 1.75) = 24.5. You can use our free BMI calculator above to get your result instantly without doing the maths manually.
The healthy BMI range for adult women is the same as for men — between 18.5 and 24.9 according to WHO guidelines. However, because women naturally have a higher body fat percentage than men at any given BMI, some researchers suggest that a slightly lower BMI threshold may be more relevant for assessing health risk in women. For a complete health picture, BMI should be considered alongside other indicators such as waist circumference and body fat percentage.
For adult men, a healthy BMI falls between 18.5 and 24.9. Men tend to carry more muscle mass than women, which can cause BMI to slightly overestimate body fat in athletic or muscular individuals. A BMI in the normal range combined with a healthy waist circumference — generally below 94 cm (37 inches) for men — is a stronger indicator of good metabolic health than BMI alone.
Yes. It is possible to have a BMI within the normal range while still carrying excess body fat, particularly around the abdomen — a condition sometimes referred to as being metabolically obese at a normal weight. Conversely, someone with a higher BMI may have excellent cardiovascular fitness and metabolic health. This is why BMI is most useful as a population-level screening tool rather than an individual diagnostic measure.
If your BMI falls outside the healthy range, it is worth speaking to a healthcare professional for personalised guidance. For those looking to manage their weight, understanding your daily calorie needs is a practical first step. Our free Calorie Calculator can help estimate how many calories you need to maintain, lose, or gain weight based on your age, height, weight, and activity level. Small, sustainable changes to nutrition and physical activity are generally more effective than rapid or extreme interventions.
