Use the free calculator below to find out your Body Mass Index as per WHO formula. Enter your height & weight (either in metric or imperial) and instantly get your body mass index (BMI). Our free BMI calculator is an essential tool, absolutely free without email signup.
Check Your BMI (body mass index)
Check Your BMI
| require | require |
Your BMI is......
| BMI | Classification |
|---|---|
| less than 18.5: | Underweight |
| 18.5 - 24.9: | Normal weight |
| 25 - 29.9: | Overweight |
| 30 - 34.9: | Class I Obese |
| 35 - 39.9: | Class II Obese |
| 40 upwards: | Class III Obese |
More About BMI
Body mass index is a simple a formula developed by World Health Organization (WHO) to check one’s height-to-weight ratio. According to this formula, a BMI of 18.5 to 25 is considered ideal for a normal person.
BMI is simply a health screener. It does not measure your body fat percentage, muscle mass or other vital health indicators. It gives you a rough idea, so only a Doctor can accurately assess your condition.
Many argue that the BMI calculation method is wrong because it ignores body type, race & activity levels. For ex: a 200 pound weighing athlete & 180 pound ordinary man may have the same BMI. However, according to USA Center for disease control & prevention (cdc.gov) BMI is still a very useful health indicator.
How BMI is Calculated?
With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared.
Formula: weight (kg) / [height (m)]2
Height is commonly measured in centimeters, divide height in centimeters by 100 to obtain height in meters.
Example: Weight = 68 kg, Height = 165 cm (1.65 m)
Calculation: 68 ÷ (1.65)2 = 24.98
Formula: weight (lb) / [height (in)]2 x 703
Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703.
Example: Weight = 150 lbs, Height = 5’5″ (65″)
Calculation: [150 ÷ (65)2] x 703 = 24.96
IDEAL WEIGHT BASED ON HEIGHT
Use the quick reference chart below to find out your ideal weight.
| Height | Male | Female |
| 4′ 10″ | 85 – 103 lbs. | 81 – 99 lbs. |
| 4′ 11″ | 90 – 110 lbs. | 86 – 105 lbs. |
| 5′ 0″ | 95 – 117 lbs. | 90 – 110 lbs. |
| 5′ 1″ | 101 – 123 lbs. | 95 – 116 lbs. |
| 5′ 2″ | 106 – 130 lbs. | 99 – 121 lbs. |
| 5′ 3″ | 112 – 136 lbs. | 104 – 127 lbs. |
| 5′ 4″ | 117 – 143 lbs. | 108 – 132 lbs. |
| 5′ 5″ | 122 – 150 lbs. | 113 – 138 lbs. |
| 5′ 6″ | 128 – 156 lbs. | 117 – 143 lbs. |
| 5′ 7″ | 133 – 163 lbs. | 122 – 149 lbs. |
| 5′ 8″ | 139 – 169 lbs. | 126 – 154 lbs. |
| 5′ 9″ | 144 – 176 lbs. | 131 – 160 lbs. |
| 5′ 10″ | 149 – 183 lbs. | 135 – 165 lbs. |
| 5′ 11″ | 155 – 189 lbs. | 140 – 171 lbs. |
| 6′ 0″ | 160 – 196 lbs. | 144 – 176 lbs. |
| 6′ 1″ | 166 – 202 lbs. | 149 – 182 lbs. |
| 6′ 2″ | 171 – 209 lbs. | 153 – 187 lbs. |
| 6′ 3″ | 176 – 216 lbs. | 158 – 193 lbs. |
| 6′ 4″ | 182 – 222 lbs. | 162 – 198 lbs. |
| 6′ 5″ | 187 – 229 lbs. | 167 – 204 lbs. |
| 6′ 6″ | 193 – 235 lbs. | 171 – 209 lbs. |
| 6′ 7″ | 198 – 242 lbs. | 176 – 215 lbs. |
| 6′ 8″ | 203 – 249 lbs. | 180 – 220 lbs. |
| 6′ 9″ | 209 – 255 lbs. | 185 – 226 lbs. |
| 6′ 10″ | 214 – 262 lbs. | 189 – 231 lbs. |
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