You’re right that an “ideal” weight is not a single number. It depends on factors such as height, age, sex, muscle mass, bone structure, and overall health. One commonly used screening tool is Body Mass Index (BMI), which compares weight to height.
BMI categories for adults
- Underweight: BMI below 18.5
- Healthy range: BMI 18.5–24.9
- Overweight: BMI 25–29.9
- Obesity: BMI 30 or higher
BMI is useful for population-level screening, but it has limitations:
- A muscular person may have a high BMI without excess body fat.
- Older adults may need a different assessment because muscle loss can affect weight and health.
- Waist size, fitness, diet, and medical conditions also matter.
General healthy weight estimate
For a given height, a BMI between 18.5 and 24.9 gives a general “healthy weight” range. For example:
- 5 ft (152 cm): about 95–128 lb (43–58 kg)
- 5 ft 6 in (168 cm): about 118–155 lb (54–70 kg)
- 6 ft (183 cm): about 140–184 lb (64–83 kg)
For a more accurate estimate, share your age, sex, height, and current weight, and I can calculate your BMI and a healthy weight range.
