Height 181 cm: what is the ideal weight?
You are 181 cm tall and wondering how much you should weigh? Here are the results of the eight most used formulas for a 30-year-old woman and man with a medium frame, along with the healthy BMI zone used in Thailand. Use the calculator to add your own age, wrist size and weight.
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Your realistic range
52.5 to 56 kg
The middle of the eight formulas, inside the Asian healthy BMI zone.
- Healthy BMI zone (18.5 to 22.9): 47.4 to 58.6 kg
- The formulas range from 51 to 57.2 kg (average 54.2 kg).
- Medium frame assumed (add your wrist size to estimate it).
The eight formulas side by side
The green band is the healthy BMI zone, the dark band your realistic range.
- average54.2
Thai formula (น้ำหนักมาตรฐาน) · 54 kgHeight minus 100 (men), minus 100 then 10% (women).
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Thai น้ำหนักมาตรฐาน formula
- Textbook version
- 54 kg
- 160 − 100 − 10%
- "Height minus 110" variant
- 50 kg
- 160 − 110
Normal zone by this rule (90% to 110%): 48.6 to 59.4 kg
Thai sources vary: the tool uses the version taught in nutrition textbooks.
Target waist size
Under 80 cm
- Half your height: 80 cm
- Asian limit (IDF): 80 cm
Ideal weight chart by height
Heights close to yours: Female, age 30, same frame.
| Height (cm) | Realistic range | Thai formula |
|---|---|---|
| 154 | 47 to 51.5 kgHealthy BMI: 43.9 to 54.3 kg | 48.6 |
| 156 | 49 to 53 kgHealthy BMI: 45 to 55.7 kg | 50.4 |
| 158 | 50.5 to 55 kgHealthy BMI: 46.2 to 57.2 kg | 52.2 |
| 160you | 52.5 to 56 kgHealthy BMI: 47.4 to 58.6 kg | 54 |
| 162 | 54 to 57.5 kgHealthy BMI: 48.6 to 60.1 kg | 55.8 |
| 164 | 56 to 59 kgHealthy BMI: 49.8 to 61.6 kg | 57.6 |
| 166 | 57 to 60 kgHealthy BMI: 51 to 63.1 kg | 59.4 |
Same calculation as your result above, rounded to the nearest half kilo. The light bar is the healthy BMI zone, the dark bar the realistic range.
Woman, 181 cm
Realistic range: 68.5 to 72 kg.
The formulas range from 68.1 to 75.6 kg.
Thai textbook formula: 72.9 kg ("height minus 110" variant: 71 kg).
Devine 71.4 kg Robinson 68.1 kg Miller 68.4 kg Hamwi 70.3 kg Broca 68.9 kg Lorentz 68.6 kg Creff 75.6 kg Thai formula 72.9 kg Man, 181 cm
Realistic range: 72 to 75 kg.
The formulas range from 72.1 to 81 kg.
Thai textbook formula: 81 kg ("height minus 110" variant: 81 kg).
Devine 75.9 kg Robinson 73.4 kg Miller 72.1 kg Hamwi 78.4 kg Broca 72.9 kg Lorentz 73.3 kg Creff 75.6 kg Thai formula 81 kg Healthy BMI zone for 181 cm
With the Asian cut-offs used by Thailand's Department of Health, a weight of 60.6 to 75 kg means a BMI of 18.5 to 22.9, for both sexes. Below 60.6 kg, BMI shows underweight; from 75.4 kg, overweight; from 81.9 kg, obesity level 1.
Target waist size
At 181 cm, the recommended waist size is under 90.5 cm (half your height), and in any case under 80 cm for women and 90 cm for men according to the Asian limit.
These tools give general information. They do not replace the advice of a doctor or a qualified professional.
Frequently asked questions
- How much should a woman who is 181 cm tall weigh?
- For a 30-year-old woman of 181 cm with a medium frame, the formulas give a realistic range of 68.5 to 72 kg, inside the healthy BMI zone of 60.6 to 75 kg.
- How much should a man who is 181 cm tall weigh?
- For a 30-year-old man of 181 cm with a medium frame, the realistic range is 72 to 75 kg, inside the same healthy BMI zone of 60.6 to 75 kg.
- What is the น้ำหนักมาตรฐาน for 181 cm?
- By the Thai textbook rule: 81 kg for men (181 − 100) and 72.9 kg for women (181 − 100, minus 10%). The "height minus 110" variant gives 71 kg for women.