🇳🇿 New Zealand 🌍 WHO 🌏 Asia-Pacific 🇯🇵 Japan
BMI Calculator — New Zealand
Body Mass Index · WHO Standard · New Zealand Health Statistics
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WHO normal BMI: 18.5–24.9. In New Zealand, 30.8% of adults are obese and 65.4% are overweight or obese (WHO 2022 Global Health Observatory). New Zealand uses the WHO BMI standard. The Ministry of Health New Zealand publishes these statistics nationally. New Zealand has the third-highest adult obesity rate in the OECD. Māori adults (46%) and Pacific Islander adults (67%) have significantly higher obesity rates than the national average (30.8%).
Weight / Height · Metric (kg/cm) · Imperial (lbs/ft)
BMI Classification — New Zealand & International
| Category / Normal | 🌍 WHO | 🌏 Asia-Pacific | 🇯🇵 Japan |
|---|---|---|---|
| Underweight | < 18.5 | < 18.5 | < 18.5 |
| Normal weight | 18.5 – 24.9 | 18.5 – 22.9 | 18.5 – 24.9 |
| Overweight | 25 – 29.9 | 23 – 27.4 | ≥ 25 (Obese) |
| Obese | ≥ 30 | ≥ 27.5 | — |
Frequently Asked Questions
What is the obesity rate in New Zealand? ▾
30.8% of adults in New Zealand are classified as obese and 65.4% are overweight or obese per WHO 2022 Global Health Observatory data. New Zealand has the third-highest adult obesity rate in the OECD. Māori adults (46%) and Pacific Islander adults (67%) have significantly higher obesity rates than the national average (30.8%). The Ministry of Health New Zealand monitors these figures through national health and nutrition surveys.
What BMI standard does New Zealand use? ▾
New Zealand follows the WHO standard (normal 18.5–24.9, overweight 25–29.9, obese ≥30). The Ministry of Health New Zealand applies these thresholds in national clinical guidelines and public health campaigns. Unlike parts of Asia which use lower cut-offs, the standard WHO thresholds reflect the original research on European and North American populations.
Is BMI an accurate measure for people in New Zealand? ▾
BMI is a widely used population screening tool in New Zealand but it has well-known limitations: it does not distinguish between muscle and fat, and cannot capture fat distribution — abdominal (visceral) fat carries higher cardiovascular risk than fat stored in limbs. The Ministry of Health New Zealand recommends combining BMI with waist circumference (men: <94 cm, women: <80 cm per WHO) and other clinical indicators for a complete assessment.