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BMI: 161cm, 45kg
BMI for 161cm tall and 45kg: 17.4 (Underweight). Free BMI calculator with health categories.
17.4 (Underweight)
BMI = 45 / (161/100)^2 = 17.4. Category: Underweight.
How This Was Calculated
Metric: BMI = weight(kg) / height(m)²
Imperial: BMI = 703 × weight(lbs) / height(in)²
Categories: Underweight <18.5 | Normal 18.5-24.9 | Overweight 25-29.9 | Obese ≥30.
Quick Reference Table
| Input | Result |
|---|---|
| 161 / 40 | 15.4 (Underweight) |
| 161 / 43 | 16.6 (Underweight) |
| 161 / 44 | 17.0 (Underweight) |
| 161 / 46 | 17.7 (Underweight) |
| 161 / 47 | 18.1 (Underweight) |
| 161 / 50 | 19.3 (Normal) |
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered normal.
Does BMI account for muscle mass?
No, BMI is a general screening tool and does not distinguish muscle from fat.
Should I use metric or imperial?
Both give the same result. Use whichever you are comfortable with.