Healthy Weight Calculator
Determine your healthy weight range based on height, age, gender, and body frame size.
A healthy weight calculator uses multiple established formulas to estimate an ideal weight range for your height, gender, and frame size, providing a more balanced target than any single method.
Examples
5'9" male, medium frame
Frequently Asked Questions
Why do different formulas give different results?
How do I determine my frame size?
Quick Tips
- •Use the weight range as a general guide and prioritize how you feel, your energy levels, and fitness markers over hitting a specific number.
- •If you are significantly outside the suggested range, consult a healthcare provider before making drastic changes.
- •Combine weight goals with body fat percentage and strength benchmarks for a more complete health picture.
A healthy weight calculator uses multiple established formulas to estimate an ideal weight range for your height, gender, and frame size, providing a more balanced target than any single method.
How to Use This Calculator
Enter your height, gender, and body frame size. The calculator uses multiple formulas (Devine, Robinson, Miller, Hamwi, and BMI-based) to estimate a healthy weight range. Results are adjusted for your body frame.
Understanding the Formula
Uses BMI range (18.5-24.9), Devine, Robinson, Miller, and Hamwi formulas to calculate ideal body weight, then averages them for a comprehensive range. Frame size adjusts by +/-10%.
Examples
5'9" male, medium frame
Devine: 77.1 kg (170 lbs), Robinson: 72.3 kg (159 lbs), Miller: 69.0 kg (152 lbs). Average range approximately 140-185 lbs.
Frequently Asked Questions
Why do different formulas give different results?
Each formula was developed from different study populations and methodologies. The range between them gives a more realistic healthy weight spectrum than any single formula.
How do I determine my frame size?
Wrap your thumb and middle finger around the smallest part of your wrist. If they overlap, you have a small frame; if they just touch, medium; if there is a gap, large frame.
Assumptions & Limitations
- Each formula was developed from different study populations, so results naturally vary — the averaged range accounts for this.
- Does not factor in body composition — a muscular person may weigh more than the suggested range and still be healthy.
- Frame size adjustment is approximate and based on a simple wrist measurement heuristic.