Ideal Body Weight Calculator

Find your healthy weight range based on multiple scientific formulas.

Your Details

Gender

Height (cm)

Your Ideal Weight Range is

0 - 0 kg

Results from Different Formulas

Hamwi Formula:-

Devine Formula:-

Robinson Formula:-

Miller Formula:-

Find Your Perfect Balance: Understanding Ideal Body Weight

When it comes to health and fitness, knowing your ideal body weight is more than just about numbers — it’s about balance, well-being, and understanding your body’s needs. Our ideal weight calculator helps you find a healthy weight range based on your height and gender using trusted scientific methods. This guide explains what ideal body weight really means, how it’s calculated, and how to use this knowledge for your personal health goals.

How to Use the Ideal Body Weight Calculator

Our tool is simple, quick, and accurate. Here’s how you can calculate your ideal weight in just a few steps:

Select Measurement Units: Choose between Metric (cm/kg) or Imperial (ft/in/lbs) depending on your preference.
Choose Gender: Select Male or Female — the calculation formulas differ slightly for each.
Enter Height: Input your exact height, and the calculator instantly computes your healthy weight range.
Check Detailed Results: You’ll see:
- An overall recommended weight range.
- Individual results from four proven formulas: Hamwi, Devine, Robinson, and Miller.

What Does “Ideal Body Weight” Mean?

Your ideal weight is the estimated body weight that supports optimal health and minimizes the risk of diseases. It’s not about achieving a perfect number, but rather finding a balanced range where your body functions best. The concept of ideal body weight (IBW) considers your height and gender — but not factors like muscle mass or bone density, which can influence real-life variations.

Formulas Used in the Ideal Weight Calculator

Our calculator provides results from four reliable formulas used in medical and nutritional science. Here’s a quick overview:

1. Hamwi Formula (1964)

Men: 48 kg + 2.7 kg per inch over 5 ft
Women: 45.5 kg + 2.2 kg per inch over 5 ft

2. Devine Formula (1974)

Men: 50 kg + 2.3 kg per inch over 5 ft
Women: 45.5 kg + 2.3 kg per inch over 5 ft

3. Robinson Formula (1983)

Men: 52 kg + 1.9 kg per inch over 5 ft
Women: 49 kg + 1.7 kg per inch over 5 ft

4. Miller Formula (1983)

Men: 56.2 kg + 1.41 kg per inch over 5 ft
Women: 53.1 kg + 1.36 kg per inch over 5 ft

By averaging these results, our healthy weight calculator gives you a more accurate range instead of a fixed number — helping you understand your body better.

IBW vs BMI: Which One Should You Use?

Both IBW (Ideal Body Weight) and BMI (Body Mass Index) are useful, but they serve different purposes:

IBW: Suggests the most balanced weight for your height and gender — a target for long-term wellness.
BMI: Uses your current weight and height to classify your status (Underweight, Normal, Overweight, Obese).

In many cases, your IBW range overlaps with the BMI’s “Normal” category, making both tools complementary for health assessment.

Factors That Influence Your Ideal Weight

Muscle Mass: Athletes or those with higher muscle density may weigh more but still be very healthy.
Body Frame: People with larger bone structures may naturally fall at the higher end of the healthy range.
Age & Metabolism: As you age, metabolism slows, influencing your ideal weight.
Genetics: Your natural body shape and fat distribution patterns also play a role.

Frequently Asked Questions (FAQ)

1. Why does the calculator give a range instead of a single number?

Because everyone’s body is different! A range allows flexibility based on your unique composition and lifestyle.

2. Is this calculator suitable for children?

No. These formulas apply to adults. Children’s ideal weights are best assessed using growth charts.

3. Can I use this calculator for fitness goals?

Absolutely! It’s an excellent starting point for setting realistic and healthy fitness or weight management goals.

4. Should I consult a doctor?

Yes — this tool is for general guidance only. Always consult a healthcare provider before making significant lifestyle changes.

Conclusion

Finding your ideal body weight isn’t about chasing perfection — it’s about understanding balance, health, and sustainability. Our Ideal Weight Calculator offers science-based insights from four trusted formulas, giving you a healthy range to aim for. Use it as a guide to make informed fitness and nutrition choices, and remember: the healthiest weight is the one where you feel strong, energetic, and confident.