Ideal Weight Calculator (Devine & Robinson) | Find Your Healthy Weight
Use our Ideal Weight Calculator to estimate your healthy body weight based on height and sex. This tool uses two widely referenced clinical formulas Devine and Robinson to provide a realistic ideal weight range in both kilograms and pounds.
- Designed for adults
- Metric & Imperial units supported
- Instant results with explanation
What Is “Ideal Body Weight”?
Ideal Body Weight (IBW) is an estimated weight range associated with optimal health for a given height and sex. Unlike BMI, which categorizes weight, ideal weight formulas aim to identify a target weight commonly used in clinical and nutritional settings.
Ideal weight estimates are often used for:
Health and fitness goal-setting
Nutritional planning
Medication dosing (in clinical contexts)
General wellness guidance
Formulas Used in This Calculator
Devine Formula
One of the most commonly used clinical formulas.
Men:
50 kg + 2.3 kg for each inch over 5 ftWomen:
45.5 kg + 2.3 kg for each inch over 5 ft
Robinson Formula
A slightly adjusted formula that accounts for body proportions.
Men:
52 kg + 1.9 kg per inch over 5 ftWomen:
49 kg + 1.7 kg per inch over 5 ft
Your result shows both values and a combined healthy range.
How to Use Your Ideal Weight Result
Your calculated ideal weight is a reference range, not a strict rule.
Being slightly above or below this range is common
Muscle mass, bone density, and body frame matter
Long-term habits are more important than hitting a single number
Use this tool as a guideline, not a judgment.
Limitations of Ideal Weight Calculators
While helpful, ideal weight formulas have limitations:
They do not measure body fat or muscle mass
They do not account for age or body composition
Athletes and muscular individuals may fall outside the range
Not designed for children, teens, or pregnant individuals
For a complete picture, combine ideal weight with other tools.
Ideal Weight vs BMI
| Ideal Weight | BMI |
|---|---|
| Provides a target weight range | Categorizes weight status |
| Height & sex based | Height & weight based |
| Common in clinical use | Common in population screening |
| Does not assess fat | Does not assess fat |
For best results, use both tools together.
How to Move Toward a Healthy Weight
If your current weight differs from your ideal range, focus on sustainable changes:
Balanced nutrition with whole foods
Regular physical activity (strength + cardio)
Adequate sleep and stress management
Consistency over quick fixes
Small steps matter more than drastic changes.
Frequently Asked Questions (FAQ)
Is ideal weight the same for everyone?
No. Body frame, muscle mass, and genetics influence healthy weight.
Which formula is more accurate?
Both are estimates. That’s why we show a range, not one number.
Should I try to reach my exact ideal weight?
No. Aim for overall health, not a specific number.
Can I use this calculator for weight loss?
Yes as a reference point. Pair it with calorie and activity planning.
Important Disclaimer
This calculator is for educational purposes only and does not replace professional medical advice. Always consult a healthcare provider for personalized guidance.
Why CoreWellFit’s Ideal Weight Tool Stands Out
Uses two trusted clinical formulas
Shows a healthy range, not just one number
Metric & Imperial support
Part of our Smart Tools wellness ecosystem
Next Step
Want a more personalized plan?
Try our Calorie Needs (TDEE) Calculator to see how many calories your body needs each day.
