If you are unable to use our BMI calculator, or if you are interested in how BMI is calculated, this page has the mathematical BMI Formula.
English BMI Formula (Imperial)
BMI = (Weight in Pounds / (Height in inches x Height in inches)) x 703
Metric BMI Formula
BMI = (Weight in Kilograms / (Height in Meters x Height in Meters))
Note that for children, you should check the BMI value on a BMI-for-age percentiles growth chart, which compares the result with other children of the same age and sex to determine the BMI percentile.
For example, a BMI percentile of 60 means that the child's weight is higher than 60% of all children of the same age and gender.
Now that you know your BMI, you can determine if you're at risk for BMI related disease.
Another way to determine your healthy weight range is by looking at the table below:
| Height | Normal | Overweight | Obese |
|---|---|---|---|
| 4' 10" | 91 - 118 lbs | 119 - 142 lbs | 143+ lbs |
| 4' 11" | 94 - 123 lbs | 124 - 147 lbs | 148+ lbs |
| 5' 0" | 97 - 127 lbs | 128 - 152 lbs | 153+ lbs |
| 5' 1" | 100 - 131 lbs | 132 - 157 lbs | 158+ lbs |
| 5' 2" | 104 - 135 lbs | 136 - 163 lbs | 164+ lbs |
| 5' 3" | 107 - 140 lbs | 141 - 168 lbs | 169+ lbs |
| 5' 4" | 110 - 144 lbs | 145 - 173 lbs | 174+ lbs |
| 5' 5" | 114 - 149 lbs | 150 - 179 lbs | 180+ lbs |
| 5' 6" | 118 - 154 lbs | 155 - 185 lbs | 186+ lbs |
| 5' 7" | 121 - 158 lbs | 159 - 190 lbs | 191+ lbs |
| 5' 8" | 125 - 163 lbs | 164 - 196 lbs | 197+ lbs |
| 5' 9" | 128 - 168 lbs | 169 - 202 lbs | 203+ lbs |
| 5' 10" | 132 - 173 lbs | 174 - 208 lbs | 209+ lbs |
| 5' 11" | 136 - 178 lbs | 179 - 214 lbs | 215+ lbs |
| 6' 0" | 140 - 183 lbs | 184 - 220 lbs | 221+ lbs |
| 6' 1" | 144 - 188 lbs | 189 - 226 lbs | 227+ lbs |
| 6' 2" | 148 - 193 lbs | 194 - 232 lbs | 233+ lbs |
| 6' 3" | 152 - 199 lbs | 200 - 239 lbs | 240+ lbs |
| 6' 4" | 156 - 204 lbs | 205 - 245 lbs | 246+ lbs |
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