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BMI: 405cm, 18kg
BMI for 405cm tall and 18kg: 1.1 (Underweight). Free BMI calculator with health categories.
1.1 (Underweight)
BMI = 18 / (405/100)^2 = 1.1. 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 |
|---|---|
| 405 / 13 | 0.8 (Underweight) |
| 405 / 16 | 1.0 (Underweight) |
| 405 / 17 | 1.0 (Underweight) |
| 405 / 19 | 1.2 (Underweight) |
| 405 / 20 | 1.2 (Underweight) |
| 405 / 23 | 1.4 (Underweight) |
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.