Ideal Weight Calculator
Calculate your ideal weight range using multiple scientific formulas. Get personalized weight recommendations based on your height, age, gender, and body frame size.
Personal Information
Frame size affects ideal weight range. Medium frame is most common.
Your Ideal Weight Range
Enter your current weight to see how it compares to your ideal range
How Ideal Weight Calculation Works
Ideal weight calculation uses multiple scientific formulas developed by medical professionals. Each formula has its strengths and is most accurate for different populations.
Robinson Formula (1983)
Men:
52 kg + 1.9 kg × (height in cm - 152.4) / 2.54
Women:
49 kg + 1.7 kg × (height in cm - 152.4) / 2.54
Miller Formula (1983)
Men:
56.2 kg + 1.41 kg × (height in cm - 152.4) / 2.54
Women:
53.1 kg + 1.36 kg × (height in cm - 152.4) / 2.54
Devine Formula (1974)
Men:
50 kg + 2.3 kg × (height in cm - 152.4) / 2.54
Women:
45.5 kg + 2.3 kg × (height in cm - 152.4) / 2.54
Hamwi Formula (1964)
Men:
48 kg + 2.7 kg × (height in cm - 152.4) / 2.54
Women:
45.5 kg + 2.2 kg × (height in cm - 152.4) / 2.54
Understanding Body Frame Size
Small Frame
Characteristics:
- Narrow shoulders and hips
- Small wrist circumference
- Delicate bone structure
- Lower muscle mass potential
Ideal weight: Lower end of range
Medium Frame
Characteristics:
- Proportional shoulders and hips
- Average wrist circumference
- Moderate bone structure
- Average muscle mass potential
Ideal weight: Middle of range
Large Frame
Characteristics:
- Broad shoulders and hips
- Large wrist circumference
- Heavy bone structure
- Higher muscle mass potential
Ideal weight: Upper end of range
How to Determine Your Frame Size
Wrist Measurement Method:
Measure your wrist circumference at the narrowest point.
Men:
• Small: < 6.5 inches (16.5 cm)
• Medium: 6.5-7.5 inches (16.5-19 cm)
• Large: > 7.5 inches (19 cm)
Thumb and Finger Test:
Wrap your thumb and middle finger around your wrist.
Women:
• Small: < 5.5 inches (14 cm)
• Medium: 5.5-6.25 inches (14-16 cm)
• Large: > 6.25 inches (16 cm)
Example Calculation
25-year-old female, 165 cm (5'5") tall, medium frame
Formula Calculations:
Robinson: 49 + 1.7 × (165-152.4)/2.54 = 57.4 kg
Miller: 53.1 + 1.36 × (165-152.4)/2.54 = 59.8 kg
Devine: 45.5 + 2.3 × (165-152.4)/2.54 = 57.0 kg
Hamwi: 45.5 + 2.2 × (165-152.4)/2.54 = 56.4 kg
Final Recommendation:
Average: 57.6 kg (127 lbs)
Range for medium frame: 55-60 kg (121-132 lbs)
BMI range (18.5-24.9): 50-68 kg (110-150 lbs)
Recommended range: 55-60 kg (121-132 lbs)
Frequently Asked Questions
Are ideal weight calculators accurate?
Ideal weight calculators provide a good starting point, but they don't account for muscle mass, bone density, or body composition. They're most accurate for people with average builds and should be used alongside other health indicators.
Which formula is most accurate?
The Robinson formula is generally considered most accurate for average heights. However, using multiple formulas and considering your frame size gives the most comprehensive assessment.
Should athletes use ideal weight calculators?
Athletes, especially those with high muscle mass, may weigh more than the "ideal" range due to muscle being denser than fat. Body composition analysis is more appropriate for athletes than ideal weight calculations.