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Free healthy weight calculator to calculate the range of healthy body weights based on BMI for your height. Given a specific height, the calculator uses standard algorithms to calculate the range of possible body weights that fall within different categories of weight determined by BMI. An adult aged 18 or older with a BMI between 18.5 and 25 kg/m² is typically defined as having a healthy or normal weight.
Last updated: February 2, 2026
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Healthy Weight Range
129 lbs - 174 lbs
Based on BMI range: 18.5 - 25 kg/m²
Underweight (BMI < 18.5)
< 129 lbs
Healthy Weight (BMI 18.5 - 25)
129 - 174 lbs
Overweight (BMI 25 - 30)
174 - 208 lbs
Obese (BMI > 30)
> 209 lbs
Important Notes:
< 18.5
Associated with increased mortality, low energy, osteoporosis, weak immune system
18.5 - 25
Optimal range for most adults, associated with better health outcomes
25 - 30
Increased risk of diabetes, heart disease, and certain cancers
> 30
Significantly increased risk of cardiovascular disease, diabetes, and reduced life expectancy
For a person with height 5 feet 10 inches (70 inches):
Healthy Weight Range
129 lbs - 174 lbs
Based on BMI range: 18.5 - 25 kg/m²
The range of healthy body weights is calculated based on BMI (Body Mass Index). Given a specific height, the calculator uses standard algorithms to calculate the range of possible body weights that fall within different categories of weight determined by BMI. An adult aged 18 or older with a BMI between 18.5 and 25 kg/m² is typically defined as having a healthy or normal weight.
Healthy Weight Min (kg) = 18.5 × Height² (m)Healthy Weight Max (kg) = 25 × Height² (m)The calculator determines the weight range that corresponds to BMI 18.5-25 kg/m² for your height. This range represents the healthy weight category according to World Health Organization standards.
A "healthy body weight" is based on estimations that do not account for certain factors such as body composition. While accurate for an "average" person, this means that it is possible to be categorized as overweight or underweight and still be "healthy," but this requires more than a generalized calculation to determine – likely with the help of a medical professional.
BMI doesn't distinguish between muscle and fat mass. Athletes and bodybuilders with high muscle mass may be classified as overweight despite being healthy. Similarly, someone with a BMI in the healthy range but high body fat percentage may not be as healthy as the BMI suggests.
A person can be underweight as a result of genetics, lack of food, metabolic issues, use of drugs, or illness. Being underweight is associated with medical conditions including hyperthyroidism, cancer, or tuberculosis, and can be indicative of some underlying disease or disorder.
Being overweight is typically a result of consuming more calories than the body expends. It's affected by factors including genetics, eating disorders, limited physical exercise, poor nutrition, and stress.
Obesity is typically caused by a lack of exercise, excessive food intake, and genetic susceptibility. It is mostly preventable through lifestyle and diet changes.
Being underweight, overweight, or obese are conditions that lead to significantly different health complications. Managing these conditions however, involves addressing many similar underlying issues, including diet, exercise, and possible mental health disorders.
Need help with other health calculations? Check out our BMI calculator and ideal weight calculator.
Get Custom Calculator for Your PlatformResult: Healthy Weight Range = 129 lbs - 174 lbs
This corresponds to BMI range: 18.5 - 25 kg/m² (Healthy/Normal Weight)
Height: 180 cm (1.80 m)
Healthy Range: 60.0 - 81.0 kg
Height: 5 feet (60 inches)
Healthy Range: 95 - 128 lbs
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