What's my BMI if I weigh 171 pounds? Is 171 pounds overweight? Enter your height to calculate.

BMI = 27.60

Note: BMI is the same for men and women.

Am I Overweight?

Here are the BMI standards as set by the World Heath Organization:

BMICategory < 18.5Underweight 18.5 - 25Healthy Weight 25 - 30Overweight > 30Obese

In the United States, the average BMI for adults is 28.8.

BMI Formula

Metric
BMI = kg / m2

Imperial
BMI = (lbs * 0.45359237) / (inches * 0.0254)2

Simplified
BMI = 703 * lbs / inches2

Is BMI Worth Using?

Body Mass Index is a very simplistic method of determining whether a person is overweight. It does not taken into account a person's frame, gender, or muscularity. Furthermore, at least one study has suggested that slightly overweight people may live longer than people in the "normal" range.

Nevertheless, BMI is highly correlated with body fat % and is a decent enough yardstick of a healthy weight.

Weight Percentiles - United States

For each weight, this table shows the percentage of Americans, aged 30-39, who are less than that weight. SourceWeight Men Women 100 lbs n/a 1.3% 110 lbs n/a 4.7% 120 lbs n/a 10.5% 130 lbs 2.1% 18.9% 140 lbs 6.4% 29.8% 150 lbs 11.5% 40.6% 160 lbs 20.4% 51.1% 170 lbs 30.5% 59.8% 180 lbs 40.9% 68.7% 190 lbs 50.6% 73.6% 200 lbs 59.3% 79.4% 210 lbs 70.0% 83.7% 220 lbs 76.1% 89.0% 230 lbs 81.7% 91.3% 240 lbs 85.5% 94.1% 250 lbs 89.6% 95.2% 260 lbs 92.0% 95.8% 270 lbs 93.3% 96.4% 280 lbs 95.1% 97.2% 290 lbs 96.4% 97.5% 300 lbs 96.9% 98.4% 320 lbs 98.2% 99.1% 340 lbs 98.8% 99.5% 360 lbs 99.4% 99.7% 380 lbs 99.7% 99.9%

BMI Chart for a 171 pound person

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