Your healthy weight depends on your height, but for most adults it falls within a well-defined range. A person who is 5’6″ typically has a healthy weight between 118 and 155 pounds, while someone who is 5’10” falls between 132 and 174 pounds. These ranges come from the National Heart, Lung, and Blood Institute and correspond to a BMI (body mass index) between 18.5 and 24.9. But the number on the scale is only part of the picture, and where you carry your weight matters just as much as how much you carry.
Healthy Weight Ranges by Height
The following ranges represent the weights associated with a healthy BMI for adults 20 and older. They apply to both men and women, though body composition at any given weight will differ between the two.
- 5’0″: 97–128 lbs
- 5’1″: 100–132 lbs
- 5’2″: 104–137 lbs
- 5’3″: 107–141 lbs
- 5’4″: 110–145 lbs
- 5’5″: 114–150 lbs
- 5’6″: 118–155 lbs
- 5’7″: 121–160 lbs
- 5’8″: 125–164 lbs
- 5’9″: 128–169 lbs
- 5’10”: 132–174 lbs
- 5’11”: 136–179 lbs
- 6’0″: 140–184 lbs
- 6’1″: 144–189 lbs
- 6’2″: 148–195 lbs
- 6’3″: 152–200 lbs
- 6’4″: 156–205 lbs
Notice how wide these ranges are. A 5’8″ person could weigh 125 or 164 pounds and still fall within the healthy zone. That 39-pound spread exists because people at the same height carry different amounts of muscle, bone, and fat. Your “ideal” weight within that range depends on your frame, your fitness level, and your overall health markers.
Why BMI Is Useful but Incomplete
BMI is calculated by dividing your weight in kilograms by your height in meters squared. The CDC uses these categories for adults:
- Underweight: below 18.5
- Healthy weight: 18.5 to 24.9
- Overweight: 25 to 29.9
- Obesity: 30 or higher
At a population level, BMI correlates well with body fat. At the individual level, it loses predictability. A muscular person can register as overweight despite having low body fat. An older adult can have a normal BMI while carrying excess fat and reduced muscle mass, a combination that increases health risks but doesn’t show up on the scale. As people age, fat mass gradually increases and muscle mass declines, which means BMI becomes a less reliable snapshot of what’s actually happening in the body.
In 2023, the American Medical Association adopted a policy stating that BMI should not be used as a sole measure of health. The AMA noted that BMI was originally developed using data from non-Hispanic white populations and doesn’t account well for differences across ethnic groups, sexes, or age. The policy recommends pairing BMI with other measures like waist circumference, body composition, and metabolic markers.
Body Fat Percentage Gives a Clearer Picture
Two people can weigh the same and look completely different. That’s because muscle is denser than fat, so a 170-pound person with 15% body fat will be leaner and smaller than a 170-pound person with 30% body fat. Healthy body fat ranges generally fall between 12% and 20% for men and 20% and 30% for women. Athletes and very active people often sit at the lower end of these ranges, while sedentary individuals tend toward the higher end.
Getting your body fat measured precisely usually requires a DEXA scan or hydrostatic (underwater) weighing. Bathroom scales with bioelectrical impedance give a rough estimate but can be off by several percentage points depending on your hydration, when you last ate, and other factors. Still, tracking trends over time with the same device at the same time of day can be informative, even if the absolute number isn’t perfectly accurate.
Your Waist Measurement Matters More Than You Think
Where your body stores fat is a stronger predictor of disease risk than total weight. Fat that accumulates around your internal organs, called visceral fat, drives up the risk of heart disease, type 2 diabetes, and metabolic syndrome far more than fat stored under the skin on your hips or thighs.
The simplest way to check this is with a tape measure. The NIH uses threshold values of 35 inches (88 cm) for women and 40 inches (102 cm) for men to flag elevated risk from abdominal fat. If your waist exceeds these numbers, your metabolic risk is higher regardless of what the scale says.
An even simpler rule: keep your waist circumference below half your height. This waist-to-height ratio of 0.5 works across different sexes and ethnic groups as a universal marker for central obesity. A 5’8″ person (68 inches) would aim for a waist under 34 inches. Research consistently shows this ratio outperforms BMI for identifying people at risk of insulin resistance, metabolic syndrome, and cardiovascular problems. A ratio above 0.6 is associated with significantly higher metabolic risk.
Newer Ways to Estimate Body Fat
A formula called Relative Fat Mass, or RFM, was developed as a more accurate alternative to BMI. It uses just your height and waist circumference to estimate whole-body fat percentage. When validated against DEXA scans (the gold standard for measuring body composition), RFM was significantly more accurate than BMI, especially for women. BMI correctly identified obesity in only about 22% of women in one study, while RFM got it right about 92% of the time. For men, the gap was smaller but still meaningful: 82% accuracy for BMI versus 89% for RFM.
The formula is: 64 minus (20 times height divided by waist circumference) plus 12 if you’re female. Both measurements need to be in the same unit (inches or centimeters). The result is an estimate of your body fat percentage, which you can then compare against the healthy ranges for your sex.
Risks of Weighing Too Little
Most people searching “what should I weigh” are concerned about weighing too much, but being underweight carries serious health consequences too. A BMI below 18.5 is associated with bone loss, muscle wasting, weakened immunity, anemia, and fertility problems. Day to day, underweight individuals often experience fatigue, dizziness, hair thinning, frequent illness, and longer recovery times. In women, it can cause irregular or absent periods. Left untreated, being chronically underweight is linked to a shortened lifespan.
If you fall below the lower end of the ranges listed above, it’s worth checking for nutrient deficiencies, underlying conditions, or complications like osteoporosis, all of which can develop silently.
Finding Your Personal Target
Rather than fixating on a single number, think of your healthy weight as a zone defined by several overlapping signals. Your BMI gives you a starting range. Your waist circumference tells you whether you’re carrying risky abdominal fat. Your body fat percentage, if you can measure it, reveals whether your weight is coming from muscle or fat. And your metabolic health markers, things like blood pressure, blood sugar, and cholesterol, tell you how your body is actually functioning at your current weight.
Someone who weighs 180 pounds with a 32-inch waist, healthy blood pressure, and normal blood sugar is in a very different situation than someone at 180 pounds with a 42-inch waist and elevated glucose. The scale treats them identically. Your body doesn’t.
If you’re within the healthy BMI range for your height, your waist is under half your height, and you feel energetic and strong, you’re likely at a good weight for you. If any of those signals are off, that’s a more useful starting point for change than chasing a number on a chart.