Healthy Weight Calculator

What is a Healthy Weight?

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. This calculator is most accurate for adults aged 18 or older.

Note that 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.

Effects of Different Weight Categories

Underweight (BMI < 18.5)

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 various medical conditions including:

• Hyperthyroidism
• Increased susceptibility to infections
• Osteoporosis
• Low energy levels
• Fertility issues
• Developmental problems

Studies have shown that being underweight results in an increase in mortality rates comparable to that of the morbidly obese.

Normal Weight (BMI 18.5-25)

Maintaining a weight in this range is associated with the lowest risk of weight-related health issues. People in this category generally have:

• Better cardiovascular health
• Lower risk of type 2 diabetes
• Reduced joint problems
• Better mobility and energy levels
• Lower risk of certain cancers

Overweight (BMI 25-30)

Being overweight is typically a result of consuming more calories than the body expends through metabolic processes and exercise. Factors contributing to being overweight include:

• Excessive calorie consumption
• Sedentary lifestyle
• Genetic predisposition
• Certain medications
• Medical conditions

Being overweight increases risk for conditions such as heart disease, diabetes, and certain types of cancer, though to a lesser extent than obesity.

Obese (BMI > 30)

Obesity significantly increases health risks and is associated with:

• Cardiovascular diseases
• Type 2 diabetes
• Musculoskeletal disorders including osteoarthritis
• Sleep apnea
• Depression and other mental health issues
• Certain types of cancer

Obesity is largely preventable through lifestyle and dietary changes.

Maintaining a Healthy Weight

For Underweight Individuals

• Increase calorie intake through nutrient-rich foods
• Focus on whole grains, vegetables, lean protein sources, nuts and seeds
• Consider strength training to build muscle mass
• Eat more frequently throughout the day
• Address any underlying medical conditions

For Overweight or Obese Individuals

• Focus on a balanced diet with appropriate calorie intake
• Limit intake of processed foods, sugars, and unhealthy fats
• Increase consumption of fruits, vegetables, whole grains, and lean proteins
• Engage in regular physical activity (at least 150 minutes per week)
• Consider working with healthcare professionals for personalized advice
• Make sustainable lifestyle changes rather than attempting rapid weight loss

For more personalized guidance, consult with a healthcare provider or registered dietitian. This calculator provides general guidelines and should not replace professional medical advice.