BMI for 55 kg and 165 cm
Instant answer: A person who weighs 55 kg (121 lbs) and is 165 cm (5'5") tall has a BMI of 20.2, classified as normal weight.
Adults at 165 cm typically fall within a healthy weight band of 50.4–67.8 kg using the WHO BMI thresholds.
What does a BMI of 20.2 mean?
This range corresponds to the lowest statistical risk of cardiovascular disease, type 2 diabetes, and metabolic syndrome in long-term cohort studies.
BMI is a screening tool, not a diagnosis. Two people at 55 kg and 165 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 165 cm
The BMI-based healthy weight range for 165 cm tall adults is 50.4–67.8 kg (111–149 lbs).
| Weight | In lbs | BMI | Category |
|---|---|---|---|
| 40 kg | 88 lbs | 14.7 | Underweight |
| 45 kg | 99 lbs | 16.5 | Underweight |
| 50 kg | 110 lbs | 18.4 | Underweight |
| 55 kg (this page) | 121 lbs | 20.2 | Normal weight |
| 60 kg | 132 lbs | 22.0 | Normal weight |
| 65 kg | 143 lbs | 23.9 | Normal weight |
| 70 kg | 154 lbs | 25.7 | Overweight |
Practical next steps
- Keep a stable routine of movement, sleep (7–9 h), and balanced meals.
- Add resistance training to slow age-related muscle loss.
- Watch the trend, not the daily fluctuation — month-over-month is what matters.
- Check blood pressure and cholesterol annually.
Frequently asked questions
What is the BMI for 55 kg and 165 cm?
Using the formula BMI = weight (kg) ÷ height (m)², a person who weighs 55 kg and is 165 cm tall has a BMI of 20.2. This places them in the normal weight category as defined by the World Health Organization.
Is 55 kg a healthy weight at 165 cm?
The healthy weight range for 165 cm is 50.4–67.8 kg, corresponding to a BMI of 18.5–24.9. 55 kg gives a BMI of 20.2, which is normal weight.
How was this BMI calculated?
BMI = 55 ÷ (1.65 × 1.65) = 55 ÷ 2.7225 = 20.2.
What should I do if my BMI is 20.2?
Keep a stable routine of movement, sleep (7–9 h), and balanced meals. Add resistance training to slow age-related muscle loss.