Healthy weight ranges for women from 4'11" to 6'0" using WHO classifications. Includes metric and imperial tables, plus important notes on body composition and pregnancy.
Women naturally carry 6–11% more body fat than men at the same BMI. This biological difference exists because of reproductive hormones and is not a health concern in itself. What matters is whether fat is distributed in a protective (subcutaneous) or risky (visceral/abdominal) pattern.
Waist circumference: Women with a waist above 80 cm (31.5 in) face elevated metabolic risk. Above 88 cm (35 in) risk is substantially higher, independent of BMI.
BMI underestimates fat in older women: After menopause, muscle loss (sarcopenia) means body fat rises while weight and BMI may stay the same — masking an unhealthy shift in composition.
BMI may overestimate risk in athletic women: Women with high muscle mass from sport or strength training may read as "overweight" despite low body fat.
Healthy body fat % for women (ACE guidelines): Essential fat 10–13% · Athletes 14–20% · Fitness 21–24% · Acceptable 25–31% · Obese ≥ 32%
BMI During Pregnancy
Standard BMI charts do not apply during pregnancy — weight gain is expected and healthy. BMI is assessed at the start of pregnancy (pre-pregnancy weight) and is used only to recommend appropriate total weight gain, not as a health benchmark during gestation.
Pregnancy weight gain guidelines (IOM): Underweight (BMI < 18.5): 13–18 kg (28–40 lbs) · Normal (18.5–24.9): 11–16 kg (25–35 lbs) · Overweight (25–29.9): 7–11 kg (15–25 lbs) · Obese (≥ 30): 5–9 kg (11–20 lbs)
Always follow your healthcare provider's specific guidance during pregnancy.
Average BMI for Women by Age (US)
Age group
Average BMI
Average weight (5'4" / 163 cm)
20–29
26.8
~71 kg / ~157 lbs
30–39
27.9
~74 kg / ~163 lbs
40–49
28.9
~77 kg / ~169 lbs
50–59
29.6
~79 kg / ~174 lbs
60–69
29.8
~79 kg / ~175 lbs
Source: NHANES data (CDC). Most adult American women fall in the overweight category by WHO standards — a trend that has risen steadily since the 1980s.
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Dariusz is a software developer and fitness enthusiast who built BMI Tracker to make evidence-based health metrics accessible without the noise of modern wellness apps. The formulas and reference ranges on this site are sourced from WHO guidelines, CDC public health data, and peer-reviewed research.
Reading the Women's BMI Chart
Find your height in the left column and read across for your weight range in each BMI category. Both metric (cm/kg) and imperial (ft-in/lbs) are provided. The WHO thresholds are universal adult standards.
Important context for women using BMI charts:
Body fat differences: Women naturally carry 6–11% more body fat than men at equivalent BMI due to hormonal differences and reproductive physiology. This is normal and does not indicate a health problem — it's factored into clinical interpretation
Menopause: After menopause, body fat redistributes from hips and thighs to the abdomen. A woman's BMI may stay constant while her waist circumference — and therefore cardiometabolic risk — increases. Waist measurement becomes more important after 50
Pregnancy: BMI is not applicable during pregnancy. Weight gain in pregnancy is expected and medically guided separately from standard BMI assessment
BMI for Women at Different Life Stages
The same BMI number represents different things at different points in a woman's life:
20s–30s: Standard WHO thresholds apply most reliably. BMI is a reasonable proxy for health risk in this age group, though body fat percentage gives more complete information for women who are physically active
40s (perimenopause): Hormonal fluctuations begin affecting body composition. Weight may stay stable while fat redistributes toward the abdomen. Waist circumference becomes increasingly informative alongside BMI
50s+ (post-menopause): The WHO threshold still applies, but some research suggests a BMI up to 27 may be acceptable or even protective in older women, given the risks of underweight (bone density loss, frailty). Muscle mass assessment becomes particularly valuable
Frequently Asked Questions
The WHO defines 18.5–24.9 as healthy for all adults including women. Research on optimal BMI (lowest all-cause mortality) for women suggests the 20–24 range, with the lower end of this range associated with best outcomes in some large studies. Very low BMI (below 18.5) carries significant health risks including bone density loss and immune compromise.
The same WHO thresholds apply to both sexes. However, women naturally carry 6–11% more body fat than men at the same BMI due to hormonal differences. A woman and man with BMI 23 will have different body fat percentages — this is physiologically normal. Some researchers argue that slightly different thresholds should apply to women, but the WHO has not adopted this change.
WHO defines increased cardiometabolic risk for women as waist above 80 cm (31.5 inches), and substantially increased risk above 88 cm (34.6 inches). These thresholds are lower than for men, reflecting that women tend to accumulate abdominal fat more rapidly after menopause and that visceral fat is metabolically dangerous regardless of sex.
Not explicitly. BMI measures weight relative to height and applies the same thresholds to both sexes, even though women naturally carry more body fat. The BMI Tracker calculator on this site estimates body fat percentage separately, using sex as an input — this gives a more sex-appropriate view of body composition alongside the standard BMI score.
Common, yes. Perimenopause (typically 40s) involves hormonal fluctuations that affect metabolism, fat distribution, and muscle mass. Many women gain 1–2 kg per year in their 40s without obvious dietary changes. This is partly hormonal and partly age-related muscle loss (which reduces resting calorie burn). Resistance training and adequate protein intake are the most evidence-based strategies for managing this.
The WHO defines underweight as BMI below 18.5 for all adults. For women specifically, health risks of underweight include irregular or absent menstrual cycles, reduced bone density (increased fracture risk), immune compromise, and fertility effects. BMI below 17 is classified as moderate thinness; below 16 as severe thinness, associated with significantly elevated mortality risk.