Ideal Weight Calculator
Calculate your ideal body weight based on your height and gender using scientifically proven formulas. Get personalized weight recommendations and healthy weight ranges for optimal health.
Key Terms
- Ideal Weight: Target body weight for optimal health
- BMI (Body Mass Index): Weight-to-height ratio indicator
- Robinson Formula: Most commonly used ideal weight calculation
- Healthy Weight Range: BMI-based safe weight boundaries (18.5-25)
- Gender-Based Calculation: Different formulas for male and female physiology
What Are These Terms?
Ideal Weight
Ideal weight is the target body weight that medical professionals recommend for optimal health based on your height and gender. It's calculated using various scientific formulas developed by researchers and is used as a general health guideline.
BMI (Body Mass Index)
BMI is a simple calculation using height and weight (kg/m²) to categorize whether a person is underweight, normal weight, overweight, or obese. While not perfect, it's a widely accepted screening tool for weight-related health risks.
Robinson Formula
The Robinson formula is one of the most commonly used ideal weight calculations. For men: 52 kg + 1.9 kg per inch over 5 feet. For women: 49 kg + 1.7 kg per inch over 5 feet. It provides a realistic target weight for most adults.
Healthy Weight Range
This is the weight range where your BMI falls between 18.5 and 25, considered healthy by WHO (World Health Organization). Staying within this range reduces risk of chronic diseases like diabetes, heart disease, and certain cancers.
How Does The Tool Work?
Calculation Method
Our calculator uses four scientific formulas and provides their average for the most accurate recommendation:
- Robinson Formula: Standard medical calculation
- Miller Formula: Refined version with adjusted coefficients
- Devine Formula: Originally developed for drug dosing calculation
- Hamwi Formula: Quick estimation method
The tool also calculates your healthy weight range based on BMI boundaries (18.5-25) for your specific height.
Step-by-Step Process
- Select Gender: Choose male or female (different formulas apply)
- Enter Height: Input your height in centimeters
- Calculate: Get instant results including:
- Average ideal weight from 4 formulas
- Minimum healthy weight (BMI 18.5)
- Maximum healthy weight (BMI 25)
Real-World Examples
Example 1: Adult Male
- Height: 180 cm (5'11")
- Gender: Male
- Results:
- Ideal Weight: 75.2 kg (166 lbs)
- Min Healthy: 60.0 kg (132 lbs)
- Max Healthy: 81.0 kg (179 lbs)
- Interpretation: Target weight is 75 kg, healthy range is 60-81 kg
Example 2: Adult Female
- Height: 165 cm (5'5")
- Gender: Female
- Results:
- Ideal Weight: 57.4 kg (126 lbs)
- Min Healthy: 50.3 kg (111 lbs)
- Max Healthy: 68.0 kg (150 lbs)
- Interpretation: Target weight is 57 kg, healthy range is 50-68 kg
Example 3: Tall Male
- Height: 195 cm (6'5")
- Gender: Male
- Results:
- Ideal Weight: 91.8 kg (202 lbs)
- Min Healthy: 70.2 kg (155 lbs)
- Max Healthy: 95.0 kg (209 lbs)
- Interpretation: Above-average height requires proportionally higher weight
Important Notes
- These calculations are general guidelines, not absolute rules
- Muscle mass, bone density, and body composition are not considered
- Athletes and bodybuilders may have higher healthy weights due to muscle
- Consult a healthcare professional for personalized advice
- Age, ethnicity, and medical conditions can affect ideal weight
- Focus on overall health, not just a number on the scale
Common Use Cases
- Setting realistic weight loss/gain goals
- Monitoring healthy pregnancy weight
- Fitness and bodybuilding targets
- Medical assessments and screenings
- Sports weight class planning
- General health awareness