Free Ideal Weight Calculator
Ideal body weight range from height and sex using multiple formulas.
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Inputs
Result
Healthy BMI range (18.5–24.9)
56.7 – 76.3 kg
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Short answer
Ideal body weight formulas estimate a target weight from height, but a BMI-based range (18.5–24.9) is the modern clinical reference.
What is the Ideal Weight Calculator?
Ideal body weight is a target range for adult body mass at a given height. Multiple formulas exist because different eras used different assumptions.
How does the Ideal Weight Calculator work?
Convert height to inches above 5 ft. Apply the desired formula's base and slope. For BMI range, multiply 18.5 and 24.9 by height in meters squared.
Formula
Variables
in over 5 ftHeight in inches above 60 inBMI18.5–24.9 healthy range
Explanation
Legacy formulas assume a linear relation above 5 ft. BMI-based ranges are the modern clinical reference.
Examples
Example 1: 175 cm male
BMI range ≈ 56.7–76.3 kg; Devine ≈ 70.5 kg.
Applications
- Weight-loss goal-setting
- Clinical drug dosing (Devine)
- Nutrition planning
Advantages
- Multiple references for triangulation
- BMI range gives an evidence-based band, not a single number
Limitations
- Legacy formulas ignore body composition and frame size
- Not suitable for children
Common mistakes
- Treating a single formula's output as a hard target instead of a range
Tips
- Aim within the BMI range and use body composition (fat %) as a secondary check
Related concepts
The Ideal Weight Calculator sits inside the Health Calculators hub, in the body composition cluster. What body mass is made of and how it is distributed. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.
Practical use cases and industry applications
Understanding Ideal Weight
Ideal body weight is a target range for adult body mass at a given height. Multiple formulas exist because different eras used different assumptions. Within health calculators, ideal weight belongs to the body composition cluster, where it shares terminology and assumptions with closely related tools.
Learning how ideal weight is calculated
Legacy formulas assume a linear relation above 5 ft. BMI-based ranges are the modern clinical reference. Working through the variables one at a time — in over 5 ft, BMI — makes the result reproducible by hand and easier to sanity-check.
Using ideal weight to make a decision
Weight-loss goal-setting Clinical drug dosing (Devine) Nutrition planning Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.
How ideal weight compares with related measures
fat mass, lean mass, adiposity, percentile all describe adjacent aspects of body composition. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.
Frequently asked questions
Which formula is best?
For clinical dosing, Devine remains standard. For general fitness, the BMI range is more forgiving and evidence-supported.
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