The weight that may be healthy for you depends on several factors, including your height, age, body composition and overall health. For adults, Body Mass Index (BMI) is commonly used as an initial screening measure to understand weight in relation to height.
Under standard adult BMI classifications, a BMI between 18.5 and 24.9 falls within the healthy-weight category. However, this range is a general guide rather than a personalized ideal weight.
Use our BMI Calculator to calculate your BMI based on your current height and weight.
How to Estimate a Healthy Weight Range for Your Height
For adults, a BMI-based weight range can be estimated using the following formula:
Lower weight boundary = 18.5 × Height (m)²
Upper weight boundary = 24.9 × Height (m)²
These calculations provide an approximate weight range corresponding to the standard adult healthy BMI category. They are not a guarantee of individual health.
Healthy Weight Range by Height
The following table shows approximate weight ranges based on a BMI of 18.5 to 24.9.
| Height | Approximate weight range |
| 150 cm | 41.6–56.0 kg |
| 155 cm | 44.5–59.8 kg |
| 160 cm | 47.4–63.7 kg |
| 165 cm | 50.4–67.8 kg |
| 170 cm | 53.5–72.0 kg |
| 175 cm | 56.7–76.3 kg |
| 180 cm | 59.9–80.7 kg |
| 185 cm | 63.3–85.2 kg |
| 190 cm | 66.8–89.9 kg |
These figures are rounded estimates calculated using the standard adult BMI range. Some clinical guidelines use different thresholds for particular populations.
How to Calculate Your BMI
BMI compares your weight with your height using this formula:
BMI = Weight (kg) ÷ Height (m)²
For example, a person weighing 70 kg with a height of 1.75 m has a BMI of approximately 22.9.
This falls within the standard adult healthy-weight category.
You can use an online Body Mass Index Calculator to perform the calculation without working through the formula manually.
Is There One Ideal Weight for Every Height?
No. Two people of the same height can have different body compositions, muscle mass and health needs.
A BMI-based range provides a broad reference, but it does not account for every factor that influences health. Someone with greater muscle mass, for example, may have a higher BMI without having the same body fat level as another person with an identical BMI.
Your weight should therefore be considered alongside other relevant indicators rather than judged by a single number.
Does Age Affect Your Ideal Weight?
Adult BMI categories are generally interpreted using the same thresholds for adults aged 20 and older. However, age can influence muscle mass, body composition and health considerations.
Children and teenagers are assessed differently because their BMI must be interpreted using age- and sex-specific growth references.
Older adults may also need a more individualized assessment that considers their health history, strength, nutrition and other clinical factors.
Is BMI Enough to Determine a Healthy Weight?
BMI is useful for initial screening, but it does not directly measure body fat, muscle mass or fat distribution.
Other factors that may be relevant include:
- Waist circumference and fat distribution
- Blood pressure and relevant laboratory results
- Physical activity and muscle strength
- Medical history and nutritional status
A healthcare professional can help interpret these measures in the context of your individual health.
Frequently Asked Questions
What is a healthy weight for someone who is 170 cm tall?
Using the standard adult BMI range of 18.5 to 24.9, the approximate weight range for someone who is 170 cm tall is 53.5 to 72.0 kg.
How much should I weigh if I am 160 cm tall?
The approximate standard adult BMI-based weight range at 160 cm is 47.4 to 63.7 kg. This is a general reference, not a personalized target.
Can I use BMI to set a weight-loss goal?
BMI can help you understand your current weight category, but a suitable goal depends on your health, body composition and circumstances. Consider discussing your goals with a qualified healthcare professional.
How do I check whether my weight is appropriate for my height?
Calculate your BMI using your height and weight, then interpret the result using the relevant adult categories. BMI is a screening tool rather than a complete health assessment.
Check Your BMI
Your height and weight can provide a useful starting point for understanding your weight category. Use our BMI Calculator to calculate your Body Mass Index and review your result alongside the limitations of BMI.