BMI for 55 kg and 150 cm
Instant answer: A person who weighs 55 kg (121 lbs) and is 150 cm (4'11") tall has a BMI of 24.4, classified as normal weight.
At 150 cm, the BMI-based healthy weight range spans 41.6 kg to 56 kg, with the midpoint considered the most statistically protective.
What the numbers mean for you
You have 1.3 kg (3 lbs) of headroom before crossing into overweight (BMI 25 = 56.3 kg (124 lbs)).
Your BMI band midpoint is BMI 21.7 (48.8 kg (108 lbs)), often used as the "most protective" reference in cohort studies.
Timelines assume ~7,700 kcal per kg of body fat. Real progress varies with muscle mass, adherence, and medications.
What does a BMI of 24.4 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 150 cm can have very different body compositions and very different health profiles. Use BMI alongside waist circumference, fitness level, and routine bloodwork.
Waist matters more than the scale
Two people can share the same BMI and have very different metabolic risk. For that reason, waist circumference is now considered a stronger predictor of cardiometabolic disease than BMI alone.
- Waist-to-height rule: keep your waist under half your height — that means below 75 cm (30") at 150 cm.
- Absolute cutoff for most adults: waist under 94 cm (37") is associated with meaningfully lower risk of type 2 diabetes and cardiovascular disease.
- Higher-risk zone: waist above 102 cm (40") — this is where risk climbs sharply regardless of BMI.
Healthy weight range for 150 cm
The BMI-based healthy weight range for 150 cm tall adults is 41.6–56 kg (92–123 lbs).
| Weight | In lbs | BMI | Category |
|---|---|---|---|
| 40 kg | 88 lbs | 17.8 | Underweight |
| 45 kg | 99 lbs | 20.0 | Normal weight |
| 50 kg | 110 lbs | 22.2 | Normal weight |
| 55 kg (this page) | 121 lbs | 24.4 | Normal weight |
| 60 kg | 132 lbs | 26.7 | Overweight |
| 65 kg | 143 lbs | 28.9 | Overweight |
| 70 kg | 154 lbs | 31.1 | Obese Class I |
Precise ±5 kg neighbours at this height
| Weight | Conversion | BMI | Category |
|---|---|---|---|
| 50 kg | 110 lbs | 22.2 | Normal weight |
| 51 kg | 112 lbs | 22.7 | Normal weight |
| 52 kg | 115 lbs | 23.1 | Normal weight |
| 53 kg | 117 lbs | 23.6 | Normal weight |
| 54 kg | 119 lbs | 24.0 | Normal weight |
| 55 kg ← this page | 121 lbs | 24.4 | Normal weight |
| 56 kg | 123 lbs | 24.9 | Normal weight |
| 57 kg | 126 lbs | 25.3 | Overweight |
| 58 kg | 128 lbs | 25.8 | Overweight |
| 59 kg | 130 lbs | 26.2 | Overweight |
| 60 kg | 132 lbs | 26.7 | 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 150 cm?
Using the formula BMI = weight (kg) ÷ height (m)², a person who weighs 55 kg and is 150 cm tall has a BMI of 24.4. This places them in the normal weight category as defined by the World Health Organization.
Is 55 kg a healthy weight at 150 cm?
The healthy weight range for 150 cm is 41.6–56 kg, corresponding to a BMI of 18.5–24.9. 55 kg gives a BMI of 24.4, which is normal weight.
How was this BMI calculated?
BMI = 55 ÷ (1.50 × 1.50) = 55 ÷ 2.2500 = 24.4.
What should I do if my BMI is 24.4?
Keep a stable routine of movement, sleep (7–9 h), and balanced meals. Add resistance training to slow age-related muscle loss.