Ideal weight for 155 cm (5'1")
155 cm is about 5'1" in feet and inches. This page brings together everything tied to that one height: the WHO healthy weight range in kilograms, a complete table matching every relevant weight to its BMI and category, and the historical ideal weight formulas for a man and a woman of 155 cm (5'1"). Whatever weight in kilograms brought you here, the table below almost certainly already includes it.
Weight and BMI table for 155 cm (5'1")
Find your weight in kilograms in the left column below to read off its exact BMI at 155 cm and the WHO category that value falls into — the fastest way to answer a question like “70 kg for 155 cm” without doing the arithmetic yourself.
| Weight (kg) | BMI (kg/m²) | Category |
|---|---|---|
| 38 kg | 15.8 | Severe thinness |
| 40 kg | 16.6 | Underweight |
| 42 kg | 17.5 | Underweight |
| 44 kg | 18.3 | Underweight |
| 46 kg | 19.1 | Normal weight |
| 48 kg | 20.0 | Normal weight |
| 50 kg | 20.8 | Normal weight |
| 52 kg | 21.6 | Normal weight |
| 54 kg | 22.5 | Normal weight |
| 56 kg | 23.3 | Normal weight |
| 58 kg | 24.1 | Normal weight |
| 60 kg | 25.0 | Normal weight |
| 62 kg | 25.8 | Overweight |
| 64 kg | 26.6 | Overweight |
| 66 kg | 27.5 | Overweight |
| 68 kg | 28.3 | Overweight |
| 70 kg | 29.1 | Overweight |
| 72 kg | 30.0 | Overweight |
| 74 kg | 30.8 | Obesity class I |
| 76 kg | 31.6 | Obesity class I |
| 78 kg | 32.5 | Obesity class I |
| 80 kg | 33.3 | Obesity class I |
| 82 kg | 34.1 | Obesity class I |
| 84 kg | 35.0 | Obesity class I |
| 86 kg | 35.8 | Obesity class II |
| 88 kg | 36.6 | Obesity class II |
| 90 kg | 37.5 | Obesity class II |
| 92 kg | 38.3 | Obesity class II |
| 94 kg | 39.1 | Obesity class II |
| 96 kg | 40.0 | Obesity class II |
A single height still covers a wide span of healthy weights because BMI classifies a ratio between weight and height squared, not a body. Bone structure, build and muscle mass all vary between two people of the same 155 cm, and none of that shows up in the table above: a wider frame and a slighter one can both land in the same row with the same category. That is by design, not a gap in the table — it is what a population-level screening tool can, and cannot, tell you about one person.
What BMI never measures is the split between fat and muscle, or where fat is stored in the body. Two people sharing a row in the table above, with the same weight and the same BMI, can have very different bodies. Our page on the limitations of BMI covers this in full, and is worth reading before treating any single row as a verdict.
Ideal weight formulas for 155 cm (5'1")
Before BMI became the standard reference, a few formulas tried to estimate a single “ideal weight” from height alone. They are still cited today, so here is what two of them give at 155 cm, for a man and for a woman — our full ideal weight guide explains where each one comes from and why the WHO range above remains the sturdier reference.
For a man
- Lorentz formula53.8 kg
- Devine formula52.4 kg
- Creff formulaNot available without an age provided
For a woman
- Lorentz formula53.0 kg
- Devine formula47.9 kg
- Creff formulaNot available without an age provided
Three historical formulas, provided as indicative benchmarks — the healthy weight range above remains the preferred reference.
Reading this range at a shorter stature
At 155 cm (5'1"), the WHO healthy weight range runs from 44.4 to 60.1 kg — a lower figure in absolute kilograms than a page built for a taller height, simply because the calculation scales with height squared. That lower number is not a sign of thinness: it is the same 18.5–25 BMI band applied consistently, whatever the height.
Historical formulas such as Lorentz or Devine were built around an adult stature a little above 155 cm. They still compute a value here, shown above, but the WHO range remains the sturdier reference at any height, including a shorter one.
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Nearby heights
Comparing a close height can help place this one in context.
Frequently asked questions
How much should I weigh at 155 cm (5'1")?
According to the World Health Organization, a weight between 44.4 kg and 60.1 kg gives a Body Mass Index in the normal range for 155 cm (5'1"). Any weight inside that interval counts as normal weight — not only its midpoint — because BMI classifies a ratio, not a single ideal figure.
Is 70 kg for 155 cm (5'1") too much?
At 155 cm (5'1"), 70 kg gives a BMI of 29.1 kg/m², which falls in the "Overweight" category — above the WHO healthy weight range of 44.4–60.1 kg for this height. That is one data point, not a verdict: it says nothing about muscle mass or where weight is carried.
Is the ideal weight the same for a man and a woman at 155 cm?
Under the WHO healthy weight range, yes: the calculation depends only on height, so the same 44.4–60.1 kg interval applies to a man and a woman of 155 cm alike. Older formulas disagree — the Lorentz formula, for instance, gives 53.8 kg for a man and 53.0 kg for a woman at this height, using a different constant for each sex.
Is a lower weight in kilograms still normal at 155 cm?
Yes. The WHO range for 155 cm starts at 44.4 kg because the calculation scales with the square of height: a shorter height produces a lower healthy range in kilograms, not a stricter standard. The same 18.5–25 BMI band applies at every height on this site.
This tool is informational and does not constitute a diagnosis or medical advice. Consult a healthcare professional.
Sources
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