What is a Weight Calculator?

A Weight Calculator is a free online tool that allows you to determine whether your current weight is a healthy weight for your height, gender and age. Unlike a normal weighing scale which only shows you a number, a weight calculator adds context to the number by looking at your weight against internationally accepted health standards.

It does this by using the Devine, Robinson, and Miller equations, combined with ranges of Body Mass Index (for equity and fairness), to measure your weight to establish whether you are underweight, healthy, overweight, or obese. This is useful not only for tracking weight, it can be valuable for identifying realistic and achievable goals regarding fitness, for example, losing weight, maintaining weight and even tracking progress over time.

How Does the Weight Calculator Work?

There is not much to using a calculator:

• Your height (in cm, ft/inches)
• Your current weight (in kg or lbs)
• Then click Calculate

The calculator will apply the applicable formula which will give a range of ideal body weight based on Davine, Robinson or Miller estimates. The calculator will show you the following as well:

• Your body mass index (BMI) score
• Weight Classification- Underweight, Healthy, Overweight or Obese
• Suggested ideal weight ranges from global health-based standards.

The results are useful for both men and women, giving you a scientifically backed baseline for setting health and fitness goals.

Why Use This Weight Calculator?

• Adds Context to Your Weight: Understand what your scale number really means.
• Science-Based Results: Uses trusted global formulas and BMI references.
• Supports Health Goals: Ideal for fitness tracking or lifestyle planning.
• Free & Fast: Quick, mobile-friendly, and requires no signup.

Disclaimer

This calculator is for general informational purposes only. Results are estimates and may vary. Always consult a healthcare professional for personalized advice.