BMI for 55 kg and 160 cm
Instant answer: A person who weighs 55 kg (121 lbs) and is 160 cm (5'3") tall has a BMI of 21.5, classified as normal weight.
Adults at 160 cm typically fall within a healthy weight band of 47.4–63.7 kg using the WHO BMI thresholds.
What does a BMI of 21.5 mean?
Within this range, body composition matters more than the exact number — muscle mass and waist circumference become the better health signals.
BMI is a screening tool, not a diagnosis. Two people at 55 kg and 160 cm can have very different body compositions and very different health profiles. Use BMI alongside waist circumference, fitness level, and routine bloodwork.
Healthy weight range for 160 cm
The BMI-based healthy weight range for 160 cm tall adults is 47.4–63.7 kg (104–140 lbs).
| Weight | In lbs | BMI | Category |
|---|---|---|---|
| 40 kg | 88 lbs | 15.6 | Underweight |
| 45 kg | 99 lbs | 17.6 | Underweight |
| 50 kg | 110 lbs | 19.5 | Normal weight |
| 55 kg (this page) | 121 lbs | 21.5 | Normal weight |
| 60 kg | 132 lbs | 23.4 | Normal weight |
| 65 kg | 143 lbs | 25.4 | Overweight |
| 70 kg | 154 lbs | 27.3 | Overweight |
Practical next steps
- Maintain at least 150 minutes of moderate aerobic activity per week.
- Include two strength sessions to preserve lean mass with age.
- Monitor waist circumference yearly — under 94 cm (men) / 80 cm (women).
- Get a routine metabolic panel every 1–2 years.
Frequently asked questions
What is the BMI for 55 kg and 160 cm?
Using the formula BMI = weight (kg) ÷ height (m)², a person who weighs 55 kg and is 160 cm tall has a BMI of 21.5. This places them in the normal weight category as defined by the World Health Organization.
Is 55 kg a healthy weight at 160 cm?
The healthy weight range for 160 cm is 47.4–63.7 kg, corresponding to a BMI of 18.5–24.9. 55 kg gives a BMI of 21.5, which is normal weight.
How was this BMI calculated?
BMI = 55 ÷ (1.60 × 1.60) = 55 ÷ 2.5600 = 21.5.
What should I do if my BMI is 21.5?
Maintain at least 150 minutes of moderate aerobic activity per week. Include two strength sessions to preserve lean mass with age.