Ideal Weight Calculator
Find your ideal weight range based on multiple scientific formulas and methods.
Your Ideal Weight Range
BMI Method
Devine Formula
Robinson Formula
Hamwi Formula
Recommended Range
Based on the average of all formulas with frame size adjustment
How to Calculate Your Ideal Weight
Our Ideal Weight Calculator analyzes your height, gender, age, and body frame to provide a comprehensive ideal weight range using multiple scientific formulas trusted by healthcare professionals.
Scientific Calculation Methods:
- Body Mass Index (BMI) Method: Determines a healthy weight range corresponding to the medically recommended BMI between 18.5 and 24.9, which is associated with lower health risks.
- Devine Formula (1974): Originally developed for medication dosing, this formula is widely used in clinical settings and provides an accurate baseline ideal weight.
- Robinson Formula (1983): A refined calculation that offers improved accuracy over earlier methods by accounting for different body proportions.
- Hamwi Formula (1964): One of the original and most trusted ideal body weight formulas still used by healthcare professionals today.
Understanding Body Frame Size:
Your body's skeletal structure significantly impacts your ideal weight. Our calculator adjusts recommendations based on your frame size:
- Small Frame: 10% reduction from base calculations - for people with smaller wrist circumference and narrower shoulders
- Medium Frame: Standard calculation - for average body structures
- Large Frame: 10% increase from base calculations - for people with larger bone structure and broader shoulders
Important Health Note:
Remember that ideal weight calculations are guidelines, not absolute indicators of health. Important factors like muscle mass, body composition, fitness level, and overall health should be considered alongside weight measurements. Always consult healthcare professionals for personalized health advice.
When to Use This Calculator:
- When setting realistic weight management goals
- To understand how different scientific methods evaluate ideal weight
- To compare your current weight against recommended ranges
- As part of a comprehensive health assessment
About Our Ideal Weight Calculator
Our Ideal Weight Calculator uses multiple scientific formulas to provide you with a comprehensive view of your ideal weight range based on your height, gender, age, and body frame.
Calculation Methods:
- BMI Method: Uses the Body Mass Index formula to determine a healthy weight range that correlates with a BMI between 18.5 and 24.9.
- Devine Formula: Developed in 1974, this formula is widely used in clinical settings for drug dosing calculations.
- Robinson Formula: Published in 1983, this provides a more refined calculation than earlier methods.
- Hamwi Formula: Created in 1964, this is one of the original ideal body weight formulas still in use today.
Body Frame Size:
Your body frame size (small, medium, or large) affects your ideal weight. Our calculator adjusts the recommended range based on your frame size:
- Small Frame: 10% below the base calculation
- Medium Frame: Base calculation
- Large Frame: 10% above the base calculation
Remember that ideal weight calculations are guidelines and not absolute indicators of health. Factors such as muscle mass, body composition, and overall health should also be considered when evaluating your weight.
Frequently Asked Questions
What is ideal body weight?
Ideal body weight refers to a weight range associated with optimal health outcomes based on your height, gender, age, and body frame. It's the weight at which health risks are typically minimized.
Why do different formulas give different results?
Each formula was developed using different research populations and methodologies. The variation between results reflects the fact that ideal weight is not a single number but a range that can vary based on individual factors.
How accurate are ideal weight calculators?
Ideal weight calculators provide evidence-based estimates, but they can't account for all individual variations in body composition. They're most useful as general guidelines rather than precise targets.
How is BMI different from other ideal weight formulas?
BMI (Body Mass Index) measures weight in relation to height squared and classifies people into weight categories. Other formulas like Devine, Robinson, and Hamwi were developed specifically to estimate ideal weight and often include adjustments for gender and frame size.