BMI Calculator for Women
The BMI cut-points are the same for women and men. The waist thresholds are not — and the waist is where most women get missed.
A healthy BMI for a woman is 18.5–24.9 on the WHO international scale, which is what most US calculators report, and roughly 18.5–22.9 if you are of Asian descent and read the WHO Asia-Pacific scale. A healthy weight at 5'4" is 49–66 kg (108–145 lb). Body fat is a different scale entirely — around 21–31% for adult women. Pregnancy is a separate case: adult BMI categories do not apply at all.
BMI Calculator
Measure at the midpoint between your lowest rib and the top of your hip bone, on a normal breath out. Needed to assess central obesity and waist-to-height ratio.
Comparison baseline: WHO Asia-Pacific (WPRO / IASO / IOTF)
This calculator covers 11 published standards: WHO international, the WHO 2004 Asian action points, WHO Asia-Pacific, China's WS/T 428, Hong Kong Department of Health, Singapore HPB, Japan JASSO, Korea KSSO, the Misra Indian consensus and ADA 2026. BMI is a screening tool, not a diagnosis.
Is there a separate BMI chart for women?
No. This is worth stating flatly because a great deal of content implies otherwise. The WHO 2004 action points, the WHO Asia-Pacific scale, NICE guideline NG246, China's WS/T 428, Japan's JASSO classification, Korea's KSSO guidelines and Singapore's HPB risk bands all use a single set of BMI thresholds for both sexes. There is no official "female BMI chart" anywhere in the primary literature.
That is not because sex does not matter. It is because BMI already carries a blunt assumption — that height and weight capture enough — and the authorities chose to add the sex-specific information through the waist criterion and through body fat percentage, not by splitting the BMI table.
So a calculator that asks for your sex and then returns a different BMI classification for the same height and weight is not more precise than one that does not. It is inventing a threshold that no issuing authority publishes.
The two charts that actually apply to a woman
WHO international (global)
| BMI range | Classification |
|---|---|
| < 18.5 | Underweight |
| 18.5 – < 25 | Normal weight |
| 25 – < 30 | Overweight |
| 30 – < 35 | Obese class I |
| 35 – < 40 | Obese class II |
| ≥ 40 | Obese class III (severe obesity) |
Source: WHO Expert Consultation, Lancet 2004 — Appropriate body-mass index for Asian populations · WHO — Obesity and overweight fact sheet(WHO technical report series / current global reference)
WHO Asia-Pacific (WPRO / IASO / IOTF)
| BMI range | Classification |
|---|---|
| < 18.5 | Underweight |
| 18.5 – < 23 | Normal |
| 23 – < 25 | Overweight (at risk) |
| 25 – < 30 | Obese I |
| ≥ 30 | Obese II |
Source: WHO / IASO / IOTF — The Asia-Pacific Perspective: Redefining Obesity and Its Treatment (2000) · KOSSO Obesity Fact Sheet 2024 — cites the 2000 Asia-Pacific criteria as its definition(The Asia-Pacific Perspective: Redefining Obesity and Its Treatment (2000))
Which one applies to you depends on your ancestry, not your sex. At 1.65 m the top of the healthy band is 68.1 kg on the international scale and 62.6 kg on the Asia-Pacific scale — a 5.4 kg difference for the same woman. If you are of Asian descent, read the second column; the WHO's own 2004 consultation found risk already substantial below BMI 25. All eleven national standards are compared here.
Height and weight chart
| Height | Healthy (BMI 18.5–25) | Overweight (BMI 25–30) | Obese |
|---|---|---|---|
| 4'10"147 cm | 89 – 119 lb | 120 – 143 lb | ≥ 144 lb |
| 4'11"150 cm | 92 – 123 lb | 124 – 148 lb | ≥ 149 lb |
| 5'0"152 cm | 95 – 128 lb | 129 – 153 lb | ≥ 154 lb |
| 5'1"155 cm | 98 – 132 lb | 133 – 158 lb | ≥ 159 lb |
| 5'2"157 cm | 102 – 136 lb | 137 – 164 lb | ≥ 165 lb |
| 5'3"160 cm | 105 – 141 lb | 142 – 169 lb | ≥ 170 lb |
| 5'4"163 cm | 108 – 145 lb | 146 – 174 lb | ≥ 175 lb |
| 5'5"165 cm | 112 – 150 lb | 151 – 180 lb | ≥ 181 lb |
| 5'6"168 cm | 115 – 154 lb | 155 – 185 lb | ≥ 186 lb |
| 5'7"170 cm | 119 – 159 lb | 160 – 191 lb | ≥ 192 lb |
| 5'8"173 cm | 122 – 164 lb | 165 – 197 lb | ≥ 198 lb |
| 5'9"175 cm | 126 – 169 lb | 170 – 203 lb | ≥ 204 lb |
| 5'10"178 cm | 129 – 174 lb | 175 – 209 lb | ≥ 210 lb |
| 5'11"180 cm | 133 – 179 lb | 180 – 215 lb | ≥ 216 lb |
| 6'0"183 cm | 137 – 184 lb | 185 – 221 lb | ≥ 222 lb |
| 6'1"185 cm | 141 – 189 lb | 190 – 227 lb | ≥ 228 lb |
| 6'2"188 cm | 145 – 194 lb | 195 – 233 lb | ≥ 234 lb |
| 6'3"191 cm | 149 – 200 lb | 201 – 240 lb | ≥ 241 lb |
| 6'4"193 cm | 152 – 205 lb | 206 – 246 lb | ≥ 247 lb |
Rounded inward — lower bounds up, upper bounds down — so adjacent bands never overlap. Every figure is derived from the BMI formula (kg/m²) rather than transcribed.
Waist thresholds for women, by standard
This is the number that genuinely differs between the sexes, and it spreads across 15 cm of published guidance. Note how wide the range is — 80 cm at the low end, 94 cm at the high end.
| Standard | Women | Men | Notes |
|---|---|---|---|
| ChinaNational Health Commission of the PRC — health industry standard WS/T 428 | ≥ 85 cm | ≥ 90 cm | Central obesity is defined as a waist of 90 cm or more in men and 85 cm or more in women. A pre-central-obesity band (85–<90 cm men, 80–<85 cm women) sits below it. |
| SingaporeHealth Promotion Board (HPB), Ministry of Health | ≥ 80 cm | ≥ 90 cm | A waist of 90 cm or more (men) or 80 cm or more (women) signals raised risk even when BMI looks acceptable. |
| JapanJapan Society for the Study of Obesity (JASSO) | ≥ 90 cm | ≥ 85 cm | JASSO's primary criterion is not waist circumference but visceral fat area of 100 cm² or more on abdominal CT. Waist is used only as a screening trigger to decide who gets the scan — and the screening thresholds are ≥85 cm in men and ≥90 cm in women. |
| South KoreaKorean Society for the Study of Obesity (KSSO) | ≥ 85 cm | ≥ 90 cm | Abdominal obesity is defined as a waist of 90 cm or more in men and 85 cm or more in women. |
| India and South AsiaConsensus statement for Asian Indians (Misra et al., JAPI 2009); Indian Council of Medical Research | ≥ 80 cm | ≥ 90 cm | Abdominal obesity is defined as a waist of 90 cm or more in men and 80 cm or more in women — the lowest female threshold of any standard on this page. |
| ADA 2026 standard for Asian populationsAmerican Diabetes Association — Standards of Care in Diabetes 2026, adult overweight and obesity | ≥ 80 cm | ≥ 90 cm | Within BMI 23.0–27.4, a waist of 90 cm or more (men) or 80 cm or more (women) upgrades the classification from overweight to obesity. |
| WHO internationalSubstantially increased risk | ≥ 80 cm | ≥ 94 cm | The WHO's ethnicity-neutral figures. At or above these values, abdominal fat is treated as a risk factor in its own right. |
| Waist-to-height ratioNICE NG246 / ADA 2026 | < 0.5 — same for both sexes | Keep your waist below half your height. The only criterion here that needs no ethnicity, no sex and no age adjustment. | |
A woman of average Asian height around 158 cm hits a waist-to-height ratio of 0.51 at an 80 cm waist — so the lowest published threshold and the universal one land in the same place. Calculate your own.
Healthy body fat for women — a different scale entirely
BMI compares you to other people. Body fat percentage describes what you are made of. The categories below come from the American Council on Exercise and are reproduced widely because they are the clearest published set — but they are fitness categories, not clinical cut-offs. Nothing physiological switches at 24% versus 25%.
| Category | Women | Men |
|---|---|---|
| Below essential fat | < 10% | < 2% |
| Essential fat | 10 – 13% | 2 – 5% |
| Athletes | 14 – 20% | 6 – 13% |
| Fitness | 21 – 24% | 14 – 17% |
| Average (acceptable) | 25 – 31% | 18 – 24% |
| Above the average range | ≥ 32% | ≥ 25% |
Women carry more essential fat than men for hormonal and reproductive function, which is why every band sits higher. Sustained body fat below the essential range disrupts hormonal function — lower is not automatically better. Estimate your own body fat percentage.
Why Asian women in particular get missed by BMI
The finding behind every lower cut-point applies to women with particular force. At the same BMI, people of Asian descent carry a higher proportion of body fat than people of European descent, and more of it viscerally. The ADA's 2026 standards put BMI's sensitivity for detecting obesity at roughly 50% overall and specifically name Asian populations and older adults as the groups it understates most.
And because the ADA also allows central obesity to override the BMI band, that is a diagnostic consequence, not a technicality: inside BMI 23.0–27.4, a waist of 80 cm or more in a woman — or a waist-to-height ratio of 0.5 or more — reclassifies her as obese rather than overweight. Compare the figures above and you can see how low that bar is: the Asian-specific version of this page walks through the same criteria from the Asian angle.
Pregnancy and breastfeeding: do not use this calculator
Adult BMI categories are not valid in pregnancy, and no amount of switching standards fixes that. Antenatal care assesses weight with gestational weight-gain ranges derived from your pre-pregnancy BMI category — different targets for each band and each trimester. The question being asked is also different: not "is this weight healthy" but "is this rate of gain right for this stage".
The same applies during breastfeeding. Use the guidance from your antenatal or postnatal provider, not an adult BMI chart — including this one. The healthy body fat ranges above are also for non-pregnant adults and do not apply.
Perimenopause and after: watch the waist, not the scale
Fat distribution shifts toward the abdomen as oestrogen falls, so the waist criteria on this page become more informative after menopause and BMI becomes slightly less so. The thresholds themselves do not change — Korea and mainland China still use 85 cm, India and the ADA still use 80 cm, waist-to-height ratio is still 0.5. What changes is how often the waist criterion is the one that fires first.
Two related notes for older women. First, BMI's accuracy declines with age for the same reason it declines across Asian populations: losing muscle while keeping weight inflates the fat fraction without moving the number. Second, the weight the fitness categories above describe is not a target to chase downward — the bands already allow a few points more body fat with age for exactly this reason.
All eleven standards, side by side
| Standard | Normal range | Overweight from | Obesity from | Waist / central obesity | Source |
|---|---|---|---|---|---|
| WHO international (global)World Health Organization | 18.5 – 24.9 | 25.0 | 30.0 | — | Primary source |
| WHO Expert Consultation 2004 (Asian populations)World Health Organization expert consultation, published in The Lancet | 18.5 – 22.9 | 23.0 | 27.5 | — | Primary source |
| WHO Asia-Pacific (WPRO / IASO / IOTF)WHO Western Pacific Regional Office, International Association for the Study of Obesity, International Obesity Task Force | 18.5 – 22.9 | 23.0 | 25.0 | — | Primary source |
| ChinaNational Health Commission of the PRC — health industry standard WS/T 428 | 18.5 – 23.9 | 24.0 | 28.0 | M ≥90cm / W ≥85cm | Primary source |
| Hong Kong, ChinaDepartment of Health, Centre for Health Protection — adopting the WHO Western Pacific Regional Office classification for Asian adults | 18.5 – < 23.0 | 23.0 | 25.0 | WHtR < 0.5 | Primary source |
| SingaporeHealth Promotion Board (HPB), Ministry of Health | 18.5 – 22.9 | 23.0 | 27.5 | M ≥90cm / W ≥80cm | Primary source |
| JapanJapan Society for the Study of Obesity (JASSO) | 18.5 – 24.9 | — | 25.0 | M ≥85cm / W ≥90cm | Primary source |
| South KoreaKorean Society for the Study of Obesity (KSSO) | 18.5 – 22.9 | 23.0 | 25.0 | M ≥90cm / W ≥85cm | Primary source |
| India and South AsiaConsensus statement for Asian Indians (Misra et al., JAPI 2009); Indian Council of Medical Research | 18.0 – 22.9 | 23.0 | 25.0 | M ≥90cm / W ≥80cm | Primary source |
| UK NICE guidance — Asian, Chinese, Middle Eastern and Black African/Caribbean adultsNational Institute for Health and Care Excellence (UK), guideline NG246 | 18.5 – 22.9 | 23.0 | 27.5 | WHtR < 0.5 | Primary source |
| ADA 2026 standard for Asian populationsAmerican Diabetes Association — Standards of Care in Diabetes 2026, adult overweight and obesity | 18.5 – 22.9 | 23.0 | 27.5 | M ≥90cm / W ≥80cm | Primary source |
All 11 standards shown, each read from the issuing authority's own document (linked per row). The WHO 2004 figures of 23.0 / 27.5 are public-health action points, not a redefinition of the international categories.
Frequently asked questions
- Is there a separate BMI chart for women?
- No. Every official standard — WHO, NICE, the ADA, China's WS/T 428, Japan's JASSO, Korea's KSSO and Singapore's HPB — applies the same BMI cut-points to women and men. What differs by sex is the waist threshold and the healthy body fat range, not the BMI table.
- What is a healthy BMI for a woman?
- 18.5–24.9 on the WHO international scale, which is what most US calculators report. For women of Asian descent the equivalent healthy range is roughly 18.5–22.9, because the overweight line drops to 23.0 under the WHO 2004 action points, the WHO Asia-Pacific scale and the ADA's 2026 criteria for Asian populations.
- Why does BMI miss health risk in women more often?
- The ADA's 2026 standards put BMI's sensitivity for detecting obesity at roughly 50%, meaning about half of people with obesity are not identified by BMI alone. Post-menopausal women and people of Asian descent are the groups where it understates body fat most, because fat shifts toward the abdomen without a proportional change in total weight.
- What waist measurement should a woman aim for?
- Under 80 cm if you follow the ADA 2026 criteria for Asian populations, India's 2009 consensus, or the WHO international figure for women. Korea's KSSO and mainland China's WS/T 428 set 85 cm. The most portable target of all is waist-to-height ratio: keep your waist below half your height, which is below 0.5 regardless of sex or ethnicity.
Data sources and how we verify them
Every cut-point, band and formula on this page is taken from the issuing authority's own document, listed below. We do not use second-hand summaries, and we do not fill gaps with numbers no source states.
- World Health Organization (WHO)
International cut-points (25 / 30) and the 2004 Asian action points
- National Health Commission of the PRC
China's current adult cut-points — WS/T 428 (24 / 28) and waist criteria
- Department of Health, Hong Kong, China
Hong Kong classification (23 / 25), from the Population Health Survey 2020-22
- Health Promotion Board, Singapore
Singapore's three-band risk ladder (18.5–22.9 / 23.0–27.4 / ≥27.5)
- Japan Society for the Study of Obesity (JASSO)
Japan's classification, which has no overweight tier (obesity from 25)
- Korean Society for the Study of Obesity (KSSO)
Korea's classification and abdominal-obesity waist thresholds
- Indian Council of Medical Research / Misra consensus
South Asian cut-points, including the 18.0 lower bound
- National Institute for Health and Care Excellence (NICE), UK
Lower ethnic-specific thresholds for Asian adults in the UK (23 / 27.5)
- American Diabetes Association (ADA)
2026 standards — Asian obesity at 27.5 and central obesity overriding BMI
Cut-points are population-level statistical thresholds, not individual diagnoses. If your value sits near a category line, measure your waist as well and read it alongside body-fat percentage. Last checked: 2026-09-15.
Sources
- WHO — Obesity and overweight fact sheet (BMI 25 / 30)
- WHO Expert Consultation — Appropriate body-mass index for Asian populations (Lancet 2004;363:157–163)
- ADA Standards of Care in Diabetes 2026 — adult overweight and obesity, including the 50% sensitivity figure and central-obesity override
- NICE guideline NG246 — waist-to-height ratio bands and lower thresholds by ethnicity
- American Council on Exercise (ACE) — percent body fat norms for men and women
- KSSO — Diagnosis of Obesity, 2022 guideline update (abdominal obesity: waist ≥85 cm in women)
- Misra et al. — Consensus Statement for Asian Indians (JAPI 2009)
Every figure above was checked against the original document. This page is general information, not medical advice.
Other countries and regions
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