Online BMI (Body Mass Index) Calculator

Calculate your BMI in just a few clicks. Our BMI Calculator will provide you with your Body Mass Index.

Calculate Your BMI


   

What is BMI?

BMI is the full form of Body Mass Index indicating body fat content. BMI helps assess whether a person is underweight, has a healthy weight, is overweight, or obese by comparing their weight to their height. Before you determine the BMI you must know your actual weight, your exact height, and your age because based on your information you can calculate the proper BMI.

BMI values are grouped into the following categories:

  • Less than 18.5 = Underweight person
  • Between 18.5 - 24.9 = Normal weight person
  • Between 25 - 29.9 = Overweight person
  • Between 30 - 35 = Obese person
  • Over 35 = Morbid obesity

What is the formula for BMI calculation?

Below, we have mentioned the formulas for the International System of Units (SI) and the US customary system (USC):

BMI = weight ÷ height in meters squared
Metric units: BMI = weight (kg) ÷ height in meters squared
US units: BMI = weight (lb) ÷ height in inches squared * 703


Note: It's important to remember that BMI is just one of many factors to consider when assessing your overall health and fitness.

BMI formula for children


The BMI formula for children is the same as for adults, but the interpretation of the results differs because a child's body composition changes as they grow. To calculate BMI for children, you would use the same formula:

BMI = weight (kg) ÷ height (m)²

BMI Chart

Switch the chart in Pound (lb) or Kilograms (Kg)
  Pounds     Kilograms
BMI 19 20 21 22 23 24 25 26 27 28 29 30 35 40
Height Pounds (lb)
4'10" 91 96 100 105 110 115 119 124 129 134 138 143 167 191
4'11" 94 99 104 109 114 119 124 128 133 138 143 148 173 198
5'0" 97 102 107 112 118 123 128 133 138 143 148 153 179 204
5'1" 100 106 111 116 122 127 132 137 143 148 153 158 185 211
5'2" 104 109 115 120 126 131 136 142 147 153 158 164 191 218
5'3" 107 113 118 124 130 135 141 146 152 158 163 169 197 225
5'4" 110 116 122 128 134 140 145 151 157 163 169 174 204 232
5'5" 114 120 126 132 138 144 150 156 162 168 174 180 210 240
5'6" 118 124 130 136 142 148 155 161 167 173 179 186 216 247
5'7" 121 127 134 140 146 153 159 166 172 178 185 191 223 255
5'8" 125 131 138 144 151 158 164 171 177 184 190 197 230 262
5'9" 128 135 142 149 155 162 169 176 182 189 196 203 236 270
5'10" 132 139 146 153 160 167 174 181 188 195 202 207 243 278
5'11" 136 143 150 157 165 172 179 186 193 200 208 215 250 286
6'0" 140 147 154 162 169 177 184 191 199 206 213 221 258 294
6'1" 144 151 159 166 174 182 189 197 204 212 219 227 265 302
6'2" 148 155 163 171 179 186 194 202 210 218 225 233 272 311
6'3" 152 160 168 176 184 192 200 208 216 224 232 240 279 319
6'4" 156 164 172 180 189 197 205 213 221 230 238 246 287 328

How to use calculatoro.com BMI calculator?

Using the calculatoro.com BMI calculator is very simple. However, before using it, you need to know your weight, height, and age. At the top of the page, fill out the form in the following order: enter your age, then input your height in feet and inches, and finally, specify your weight. After that, click the "Calculate BMI" button. In a matter of seconds, the result will appear in an alert box.