Ideal Weight Calculator
Calculate your ideal weight range based on height, gender, age, and body frame using multiple medical formulas.
Ideal Weight Calculator
Calculate your ideal weight range using medical formulas
Weight Goal Planner
Plan your weight change timeline and required calorie changes
Ideal Weight Formulas
Different medical formulas for calculating ideal body weight
Hamwi Formula (1964)
Most widely used by healthcare professionals
- • Men: 48 kg + 2.7 kg per inch over 5 feet
- • Women: 45.5 kg + 2.2 kg per inch over 5 feet
- • ±10% for small/large body frames
Devine Formula (1974)
Used for drug dosage calculations
- • Men: 50 kg + 2.3 kg per inch over 5 feet
- • Women: 45.5 kg + 2.3 kg per inch over 5 feet
- • Most conservative estimate
Robinson Formula (1983)
Modified version of Devine formula
- • Men: 52 kg + 1.9 kg per inch over 5 feet
- • Women: 49 kg + 1.7 kg per inch over 5 feet
- • Slightly higher base weights
Miller Formula (1983)
Alternative approach
- • Men: 56.2 kg + 1.41 kg per inch over 5 feet
- • Women: 53.1 kg + 1.36 kg per inch over 5 feet
- • Highest base weight estimates
How to Determine Your Body Frame
Simple wrist measurement method to determine body frame size
Wrist Circumference Method
Measure your wrist just below the wrist bone where it bends. Use this measurement with your height to determine frame size.
Men's Frame Size
Height over 165cm (5'5"):
• Small: wrist < 16.5cm (6.5")
• Medium: wrist 16.5-19cm (6.5-7.5")
• Large: wrist > 19cm (7.5")
Women's Frame Size
Height over 157cm (5'2"):
• Small: wrist < 15.25cm (6")
• Medium: wrist 15.25-16.5cm (6-6.5")
• Large: wrist > 16.5cm (6.5")
Alternative: Thumb and Finger Method
Wrap your thumb and middle finger around your other wrist. If they overlap significantly, you have a small frame. If they just touch, you have a medium frame. If they don't touch, you have a large frame.
Achieving and Maintaining Healthy Weight
For Weight Loss:
- • Create a moderate calorie deficit (500-750 calories/day)
- • Aim to lose 0.5-1 kg (1-2 lbs) per week
- • Combine cardio and strength training
- • Focus on whole foods and proper portion sizes
- • Stay hydrated and get adequate sleep
- • Track progress with measurements, not just weight
For Weight Gain:
- • Create a moderate calorie surplus (300-500 calories/day)
- • Aim to gain 0.25-0.5 kg (0.5-1 lb) per week
- • Focus on strength training for muscle growth
- • Eat nutrient-dense, calorie-rich foods
- • Include healthy fats and proteins
- • Consider eating more frequent, smaller meals
Important Reminders
- • Ideal weight formulas are guidelines, not absolute targets
- • Body composition (muscle vs. fat) is more important than weight alone
- • Consult with healthcare professionals for personalized advice
- • Focus on overall health, not just achieving a specific number
- • Sustainable lifestyle changes are better than quick fixes
Frequently Asked Questions
Are these ideal weight formulas accurate for everyone?
These formulas provide general guidelines but may not be accurate for athletes, very muscular individuals, pregnant women, or people with certain medical conditions. They work best for average body compositions.
Which formula should I trust most?
The Hamwi formula is most widely used by healthcare professionals. However, it's best to consider the range from all formulas and focus on what feels healthy and sustainable for your body.
What if my current weight is far from the ideal range?
Don't aim to reach ideal weight immediately. Set smaller, achievable goals (5-10% of body weight) and make gradual changes. Consult with healthcare professionals for guidance on safe weight management.
Should I focus on weight or body composition?
Body composition (muscle vs. fat ratio) is often more important than weight alone. Two people of the same height and weight can have very different health profiles based on their muscle and fat distribution.