For a woman who is 5’5″, a healthy weight falls between about 111 and 150 pounds, based on standard BMI categories. The national average weight for American women is 171.8 pounds, but the average woman is also slightly shorter than 5’5″ (closer to 5’3.5″), so that number isn’t a direct comparison.
Healthy Weight Range at 5’5″
BMI, or body mass index, uses your height and weight to sort you into broad health categories. For a woman standing 5’5″, the math breaks down like this:
- Underweight: below about 111 pounds (BMI under 18.5)
- Healthy weight: 111 to 149 pounds (BMI 18.5 to 24.9)
- Overweight: 150 to 179 pounds (BMI 25 to 29.9)
- Obese: 180 pounds or more (BMI 30+)
That healthy range is wide on purpose. A 5’5″ woman who weighs 120 pounds and one who weighs 145 pounds can both be perfectly healthy depending on their frame, muscle mass, and overall fitness. BMI is a screening tool, not a diagnosis.
What “Ideal Body Weight” Formulas Say
Several clinical formulas, originally designed for calculating medication doses, have been widely adopted as rough guides for ideal body weight. For a 5’5″ woman, they cluster closely together: the Hamwi formula gives 124.6 pounds, the Devine formula gives 125.7 pounds, and the Robinson formula gives 126.8 pounds. All three land right around 125 pounds, which sits comfortably in the middle of the healthy BMI range.
These formulas are useful as a general reference point, but they weren’t built to define what any individual woman should weigh. They don’t account for bone structure, muscle mass, age, or ethnic background.
How Ethnicity Affects These Numbers
Standard BMI cutoffs were developed primarily from data on white populations. For women of Asian descent, health risks associated with excess body fat tend to show up at lower weights. The World Health Organization recommends lower thresholds for Asian populations: overweight starting at a BMI of 23 (about 138 pounds at 5’5″) rather than 25, and obesity at a BMI of 25 (about 150 pounds) rather than 30. If you’re of Asian descent, the “healthy” end of the weight range may be narrower than the standard chart suggests.
Why Two Women at the Same Weight Can Look Different
Muscle is denser than fat, meaning it takes up less space for the same number of pounds. Two women who are both 5’5″ and 140 pounds can have very different body shapes. One might carry more muscle from regular strength training and look lean and firm. The other might carry more fat tissue and appear softer, even at an identical weight. This is why stepping on a scale only tells part of the story.
Body fat percentage fills in some of the gaps BMI leaves behind. A 2025 study using national survey data defined overweight for women as a body fat percentage of 36% or higher, and obesity as 42% or higher. These thresholds capture something the scale misses: where your weight is actually coming from.
Waist Size as a Health Indicator
Where you carry fat matters as much as how much you carry. Fat stored around the midsection (visceral fat) is more closely linked to heart disease, type 2 diabetes, and metabolic problems than fat stored in the hips or thighs. A simple guideline from the NHS: try to keep your waist measurement below half your height. For a 5’5″ woman, that means a waist under 32.5 inches.
The average waist circumference for American women is currently 38.5 inches, well above that threshold. Measuring your waist at home with a tape measure, level with your belly button, gives you a quick and genuinely useful data point that complements whatever the scale says.
How Weight Shifts With Age
Weight doesn’t stay constant across your lifetime, and that’s normal. Most women gain weight gradually through their 30s, 40s, and 50s, driven by shifts in hormones, metabolism, and muscle mass. After menopause, the body tends to redistribute fat toward the midsection even without a change in total weight. After about age 60, many women begin losing both muscle and fat, and weight often trends downward. A number that was healthy in your 20s may not be the right target in your 50s, and vice versa.
Putting It All Together
If you’re 5’5″, a weight between 111 and 149 pounds is considered healthy by BMI standards, with clinical formulas pointing to roughly 125 pounds as a midpoint. But weight is only one piece of a larger picture. Your waist measurement, body composition, fitness level, and how you feel day to day all matter. A 5’5″ woman at 155 pounds with a lean waist and strong muscles may be healthier than one at 130 pounds who is sedentary and carries fat around her midsection. Use the numbers as a starting point, not a verdict.