Ideal Body Weight Calculator

Ideal Body Weight is a theoretical weight based on your height and gender that represents the optimal weight for health. It's commonly used in medical settings to calculate medication dosages, determine ventilator settings, and assess nutritional needs. IBW provides a reference point for healthcare professionals and individuals to evaluate weight status and set realistic health goals.

There is no single "most accurate" formula as each was developed for different populations. The Devine formula (1974) is most widely used in clinical practice, especially for medication dosing. The Robinson and Miller formulas (1983) were developed to better fit actual population data. Using the average of all formulas (as our calculator does by default) provides the most balanced estimate. Your healthcare provider may prefer a specific formula based on your clinical situation.

IBW is calculated based solely on height and gender using established formulas, providing a single target weight. BMI (Body Mass Index) is calculated from your actual weight and height and classifies you into weight categories (underweight, normal, overweight, obese). IBW is often used for medical calculations and treatment planning, while BMI is used for population health screening and general weight assessment. Neither accounts for muscle mass, bone density, or body composition.

Yes, absolutely. IBW is a general guideline and doesn't account for individual factors like muscle mass, frame size, athletic build, or ethnic background. Athletes and muscular individuals often weigh more than their IBW while being very healthy. Most formulas include a healthy range of +/-10% around the IBW. Factors like body composition, fitness level, health markers (blood pressure, cholesterol, blood sugar), and overall well-being are more important than hitting an exact number. Always consult with healthcare professionals for personalized weight goals.