Quick answer
A healthy weight range corresponds to a BMI of 18.5 to 24.9: weight = BMI × height². At 175 cm that is 56.7 to 76.3 kg.
Enter your height. The calculator returns the weight range.
Related tools: Ideal Weight Calculator: Ideal body weight by four published formulas (Devine, Robinson, Miller, Hamwi). Waist-to-Hip Ratio Calculator: Waist-to-hip ratio and WHO risk threshold.
How to use the Healthy Weight Calculator
- Enter height (cm) (between 100 and 260).
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Height | A number, in cm | ≥ 100, ≤ 260 |
Formula and method
Formula
weight range = 18.5 × h² to 24.9 × h² (h in metres)
IEEE-754 double precision; shown to 1 decimal place unless stated.
Weights corresponding to the WHO normal BMI range of 18.5–24.9. Informational estimate, not medical advice. Talk to a qualified health professional about your own situation.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Height = 175.
| Result | Value |
|---|---|
| Healthy weight range | 56.7 – 76.3 kg |
Example 2
Inputs: Height = 160.
| Result | Value |
|---|---|
| Healthy weight range | 47.4 – 63.7 kg |
The first line is the headline result (healthy weight range). IEEE-754 double precision; shown to 1 decimal place unless stated.
The arithmetic
1.75² = 3.0625; 18.5 × 3.0625 = 56.7 kg and 24.9 × 3.0625 = 76.3 kg. The range is wide because bodies differ in frame and muscle.
Limits of BMI
BMI does not separate muscle from fat, so athletes may be above the range while healthy. It also differs for children and for some ethnic groups. Waist measurements add information. Adults only; this is not a diagnosis.
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Height: entering "50" shows "Height must be at least 100." beside that field and no result.
Choosing between the Healthy Weight Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Ideal Weight Calculator](/health/ideal-weight-calculator/) | units, sex and height | Ideal weight (Devine) |
| [Adjusted Body Weight Calculator](/health/adjusted-weight/) | sex, actual weight and height | Adjusted body weight |
| [Waist-to-Hip Ratio Calculator](/health/waist-hip-ratio/) | sex, waist and hip | Waist-to-hip ratio |
| [BMI Calculator](/health/bmi-calculator/) | units, weight and height | Your BMI |
| [Height Calculator](/health/height-calculator/) | convert | Height |
Background: body measurements and screening
Body-measurement ratios are screening tools, not diagnoses. BMI ignores body composition and fat distribution, and reviews find waist-to-hip and waist-to-height ratios are useful additions but not clearly better than BMI or waist circumference alone. Where the tape goes matters, so measure at the same sites each time.
Some sources quote a waist-to-hip ratio above 0.8 for women and 0.95 for men as a marker of increased metabolic risk; treat that as a screening flag, and talk to a clinician about what your own numbers mean.
Assumptions and limitations
- Adults only
- Not a diagnosis
This calculator gives general information based on published formulas. It is not medical advice, and it cannot account for your health history. Talk to a qualified clinician about decisions that affect your health.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for height to confirm this.
Frequently asked questions
What is BMI?
Weight divided by height squared.
Is the range right for everyone?
It's a screening guide.
What about older adults?
Slightly higher BMI can be fine.
What does the Healthy Weight Calculator calculate?
Weight range for a normal BMI at your height. It returns Healthy weight range.
What formula does the Healthy Weight Calculator use?
weight range = 18.5 × h² to 24.9 × h² (h in metres). Weights corresponding to the WHO normal BMI range of 18.5–24.9.
What do I need to enter in the healthy Weight Calculator?
You enter Height (cm).
How is the result rounded or limited?
IEEE-754 double precision; shown to 1 decimal place unless stated. Adults only.
What are the limits of this calculator?
Adults only. Not a diagnosis.
What is an example of a healthy Weight result?
With height 175, the healthy weight range is 56.7 – 76.3 kg.
Where does the method come from?
The method follows: WHO BMI classification.
Can I rely on this calculator for a decision?
This calculator gives general information based on published formulas. It is not medical advice, and it cannot account for your health history. Talk to a qualified clinician about decisions that affect your health. For this calculator in particular: Adults only.
Related calculators
- Ideal Weight Calculator — Ideal body weight by four published formulas (Devine, Robinson, Miller, Hamwi).
- Waist-to-Hip Ratio Calculator — Waist-to-hip ratio and WHO risk threshold.
- BMI Calculator — Find your Body Mass Index (BMI) and weight status.
- Height Calculator — Convert height between centimeters and feet-and-inches.
- Body Fat Calculator (U.S. Navy) — Estimate body fat percentage from tape measurements (U.S. Navy method).
Sources
- WHO BMI classification
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.