What is BMI Calculators?
BMI Calculator is a online tool that help individuals determine their Body Mass Index (BMI). BMI is a numerical value derived from a person’s weight and height, and it is commonly used as an indicator of whether someone is underweight, normal weight, overweight, or obese. BMI calculators typically require inputting a person’s height and weight, and then they use a mathematical formula to calculate the BMI. The result is then compared to standardized BMI categories to assess a person’s weight status.
BMI calculators are widely used by individuals, healthcare professionals, and fitness enthusiasts to gain insights into their weight and overall health. It is important to note that while BMI provides a general indication of weight status, it does not take into account other factors such as muscle mass, body composition, or individual differences. Therefore, it is always recommended to consult with a healthcare professional for a comprehensive assessment of one’s health.always recommended to consult with a healthcare professional for a comprehensive assessment of one’s health.
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How to Calculate BMI or Body Mass Index Rate?
To calculate BMI (Body Mass Index), follow these simple steps below:
- Measure Your Weight: Use a reliable scale to measure your weight in kilograms (kg) or pounds (lbs).
- Measure Your Height: Use a measuring tape or a stadiometer to measure your height in meters (m) or feet (ft).
Convert height to meters (if necessary): If you measured your height in feet and inches, convert it to meters. Multiply the number of feet by 0.3048 to get the equivalent in meters. Then, add any remaining inches multiplied by 0.0254 to the result.
For example, if your height is 5 feet 6 inches:
5 feet x 0.3048 = 1.524 meters
6 inches x 0.0254 = 0.1524 meters
Total height = 1.524 + 0.1524 = 1.6764 meters
- Calculate BMI Rate: Divide your weight (in kg) by the square of your height (in meters).
BMI = weight (kg) / (height (m))^2
For example, if your weight is 70 kg and your height is 1.6764 meters:
BMI = 70 / (1.6764)^2 = 24.9
- Interpret the Result: The calculated BMI value falls into different categories that indicate weight status. The common categories are:
Classification | Percentile Range |
Underweight | BMI < 18.5 |
Healthy Weight | 18.5 ≤ BMI < 25 |
At Risk of Overweight | 25 ≤ BMI < 30 |
Overweight | BMI ≥ 30 |
What BMI is 70kg?
An individual who weight 70 kg and height 1.75 m, will have a BMI of 22.9, which is considered a normal BMI
Here is the calculation:
BMI = Weight (kg)/Height(M) x Height (M) = 70/1.75*1.75= 22.9
What is BMI Calculator Females?
A BMI calculator for females is a tool used to calculate the Body Mass Index (BMI) specifically for women. The process of calculating BMI for females is the same as for BMI Calculator Males. You would need to measure your weight and height, and then use a formula to calculate your BMI.However, it’s important to note that the calculation and interpretation of BMI are the same for both males and females.
BMI Calculators Formula
The formula to calculate BMI (Body Mass Index) is as follows:
BMI = weight (in kilograms) / (height (in meters))^2
If weight is measured in pounds (lbs) and height is measured in inches (in), you can use the following formula:
BMI = (weight (in pounds) / (height (in inches))^2) x 703
Here’s an example of calculating BMI using the metric system:
Weight: 65 kilograms Height: 1.75 meters
BMI = 65 / (1.75)^2 = 21.22
In this example, the calculated BMI is 21.22.
Body Mass Index Chart

BMI Calculator Kids
BMI calculators for kids use specific charts and formulas designed for children and teenagers to assess their BMI percentile. The BMI percentile compares a child’s BMI to other children of the same age and gender, taking into account their growth patterns.
To use a BMI calculator for kids, you will need the following information:
- Age: The exact age of the child in years.
- Gender: Whether the child is male or female.
- Weight: The weight of the child in kilograms (kg) or pounds (lbs).
- Height: The height of the child in centimeters (cm) or inches (in).
Once you have collected this information, you can enter it into a BMI calculator specifically designed for children. The calculator will use age- and gender-specific growth charts from organizations such as the World Health Organization (WHO) or the Centers for Disease Control and Prevention (CDC). It will then calculate the child’s BMI percentile, indicating where they fall in relation to other children of the same age and gender.
BMI-for-age percentile categories commonly used for children include:
Classification | Percentile Range |
Underweight | <5% |
Healthy weight | 5% – 85% |
At risk of overweight | 85% – 95% |
Overweight | >95% |
Using a BMI calculator for kids can be a helpful tool to assess a child’s weight status, but it’s important to interpret the results in conjunction with other factors and consult with a healthcare professional for a comprehensive evaluation of a child’s health.
Ideal BMI Chart – Height Weight Chart
Height | UNDERWEIGHT | OVERWEIGHT | OBESE |
---|---|---|---|
4’10” | 118 or less | 119–142 | 143 or more |
4’11” | 123 or less | 124–147 | 148 or more |
5’0” | 127 or less | 128–152 | 153 or more |
5’1” | 131 or less | 132–157 | 158 or more |
5’2” | 135 or less | 136–163 | 164 or more |
5’3” | 140 or less | 141–168 | 169 or more |
5’4” | 144 or less | 145–173 | 174 or more |
5’5” | 149 or less | 150–179 | 180 or more |
5’6” | 154 or less | 155–185 | 186 or more |
5’7” | 158 or less | 159–190 | 191 or more |
5’8” | 163 or less | 164–196 | 197 or more |
5’9” | 168 or less | 169–202 | 203 or more |
5’10” | 173 or less | 174–208 | 209 or more |
5’11” | 178 or less | 179–214 | 215 or more |
6’0” | 183 or less | 184–220 | 221 or more |
6’1” | 188 or less | 189–226 | 227 or more |
6’2” | 193 or less | 194–232 | 233 or more |
6’3” | 199 or less | 200–239 | 240 or more |
6’4” | 204 or less | 205–245 | 246 or more |
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