Find your healthy weight range using Devine, Robinson, Miller, and BMI-based formulas for comparison.
Ideal body weight is the optimal weight associated with maximum life expectancy for a given height.
Different Formulas:
Healthy BMI Range:
BMI (Body Mass Index) between 18.5 and 24.9 is considered healthy for most adults. This range is associated with the lowest risk of chronic diseases.
Note: These formulas provide estimates only. Individual factors like body composition, age, and ethnicity can affect ideal weight. Consult with healthcare professionals for personalized advice.
Type your height and select sex. Different formulas use different reference points, so multiple methods are useful for comparison.
Devine, Robinson, Miller, and BMI-based range. The calculator shows all four so you can pick the most useful reference.
Get the ideal weight for each formula plus a healthy BMI-based range (BMI 18.5-24.9 for your height).
For related calculations, try our BMI calculator.
Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.
FAQ
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An ideal weight calculator is a free tool that estimates a healthy weight range based on height, sex, and frame size. Our ideal weight calculator uses the Devine, Robinson, and Miller formulas, plus the BMI healthy range. The ideal weight calculator gives you multiple reference points, since no single formula works for every body type.
How it works
Our ideal weight calculator lets you find a healthy weight range using multiple formulas, in three steps.
Type your height in feet and inches (or centimeters). Most formulas use height in inches as the main input.
Choose male or female. The Devine, Robinson, and Miller formulas give different values for each sex, so this affects the result.
The result shows the healthy weight range from each formula, the BMI range, and notes on which formula is most appropriate for your situation. The range is a starting point, not a target.
Understand the differences between BMI and body fat percentage, and how ideal weight fits into your health picture.
Discover a holistic approach to health and fitness planning using advanced calculators.