BMI for 179 cm and 45 kg
BMI 14
Asia-Pacific cut-offs (23 · 25) · underweight
WHO international cut-offs (25 · 30) · underweight
Reference weight and healthy range
At BMI 22 the reference weight is 70.5 kg.
The healthy range (BMI 18.5–22.9) is 59.3–73.4 kg.
That is 14.3 kg below the bottom of the range.
Other pairs that also give BMI 14
Nearby heights and weights
BMI cannot tell muscle from fat, so it reads high for people who train heavily. It is a reference figure, not a diagnosis.