Ideal Weight Calculator
Find your perfect weight range using scientifically validated formulas.
Ideal Weight Calculator
About Ideal Weight Calculations:
This calculator uses multiple scientifically-validated formulas (Hamwi, Devine, Robinson, Miller) plus BMI-based ranges to provide a comprehensive ideal weight assessment. Individual results may vary based on body frame, muscle mass, and overall health.
Formula Information
How to Use the Ideal Weight Calculator
- Enter Your Height: Input your height in your preferred units (feet/inches or centimeters)
- Select Your Gender: Choose male or female as formulas differ between genders
- Choose Unit System: Select between imperial (lbs) or metric (kg) for weight results
- View Multiple Results: See ideal weight ranges from Hamwi, Devine, Robinson, and Miller formulas
- Review the Average: The average of all formulas provides a balanced target weight
- Set Realistic Goals: Use the range as guidance, not an absolute target
Frequently Asked Questions
Why do different formulas give different results?
Different formulas were developed at different times using different populations. Each has its own approach to calculating ideal weight. The variation shows that ideal weight is a range, not a single number. Use the average as a general guideline.
Which formula is most accurate?
No single formula is universally most accurate. The Devine formula is widely used in medical settings, while newer formulas like Miller may be more appropriate for modern populations. Consider using the average of all formulas for the most balanced estimate.
Does body frame size affect ideal weight?
Yes, people with larger frames can be healthy at higher weights than those with smaller frames. These formulas don't account for frame size, so adjust expectations accordingly. Small frames may target the lower end of the range, large frames the higher end.
What about muscle mass and body composition?
These formulas don't account for muscle mass or body composition. Athletes and muscular individuals may have ideal weights above formula predictions. Body fat percentage is often a better indicator of health than weight alone.
Should I use these formulas if I have a medical condition?
Consult your healthcare provider for personalized weight recommendations if you have medical conditions. These formulas are general guidelines for healthy adults and may not apply to everyone.
Weight Management Guidance
Ideal Weight is a Range, Not a Number
Different formulas produce different results because ideal weight varies based on body frame, muscle mass, and individual factors. Use the average as a guideline, not an absolute target. A 10-20 pound range around the calculated ideal is normal and healthy. Athletes with more muscle may weigh more than the formula suggests while still being healthy.
Set Realistic Goals
Safe weight loss is 1-2 pounds per week. Losing 50 pounds takes 6-12 months minimum. If your current weight differs significantly from your ideal weight, set intermediate goals every 10-15 pounds. Rapid weight loss usually leads to muscle loss and weight regain. Sustainable changes to diet and activity matter more than speed.
Body Composition Matters More
Weight alone doesn't show the full picture. Two people at the same height and weight can look different based on muscle and fat distribution. Strength training builds muscle, which weighs more than fat but takes up less space. Focus on body fat percentage and measurements alongside weight for better health tracking.
Age and Medical Factors
Ideal weight formulas are designed for adults and may not apply to seniors, teenagers, or people with medical conditions. Older adults can be healthy at slightly higher weights. Discuss weight goals with a doctor if you have diabetes, heart disease, or other health conditions. Pregnancy, medications, and hormones affect weight targets.
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