Range, not a prescription
This tool translates adult BMI reference boundaries into a weight range.
Healthy Weight Calculator
Range midpoint
Enter your values, then calculate to see a verified result.
Reference range
How this result is calculated
A clear calculation path based on your inputs.
Inputs usedReview the information used for this result.
Full calculation and sourcesReview the equation, normalized inputs, assumptions, and version.
Versioned calculationFormula v1.0.0
Adult reference
- Lower boundary
- BMI 18.5
- Upper boundary
- BMI 24.9
Important limitation
This educational estimate is not an individual treatment target.
Normalize heightConvert height to meters
170 cm = 1.70 mSquare heightHeight × height
1.70² = 2.89Apply BMI boundaries18.5 and 24.9 × height²
53.5–72.0 kgInterpretation
The midpoint estimate is .
The displayed range uses adult BMI screening boundaries.
Body composition and clinical context can change interpretation.
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Related calculators and resources
Method and test recordFormula v1.0.0
- Recorded scope
- adult health screening
- Publisher
- CalculatorGeek
- Recorded review date
- 2026-08-31
- Next source review
- 2027-08-31
- Definition fixtures
- 2 configured scenarios
- Published examples
- 2 shown below
Recorded method
No tool-specific review method has been recorded.
These records describe the published model and reference tests. A test-case count is not a certification of every possible input or an independent specialist review. Editorial policy
Known limitations
- BMI-based ranges are screening references, not individualized recommendations.
- This adult tool is not intended for children or pregnancy.
Method sources
Latest model update
2026-08-31 - Created in the unified CalculatorGeek schema engine.
Reference inputs and expected results
Up to 12 examples from the configured definition fixtures are shown. Expected values use the stated output units; invalid inputs are intended to be rejected.
| Case | Inputs | Expected result |
|---|---|---|
| 170 cm adult range | Height: 170 cm | Lower boundary: 53.5 kg; Upper boundary: 72 kg; Range midpoint: 62.7 kg |
| imperial equivalence | Height: 66.9291339 in | Lower boundary: 53.5 kg; Upper boundary: 72 kg |
Report an issue with this tool. Include the page URL, units, expected answer, and steps to reproduce. Do not include sensitive personal information.
On this page
Direct answer
Calculates range midpoint, lower boundary, and upper boundary from height with visible method, validation, precision, and limitations.
For the next related calculation, use the BMI Calculator. Screen adult weight relative to height.
How to use the calculator
- Identify the meaning and unit of height.
- Enter values without prematurely rounding them.
- Select Calculate and review range midpoint, Lower boundary, and Upper boundary.
- Check the method, assumptions, and limitations before using the answer.
To compare this result with another relevant method, open the Waist-to-Height Ratio Calculator. Compare waist circumference with height.
Formula and methodology
Weight range = BMI boundary × height².
Inputs are validated and normalized before calculation. Working precision is retained until the visible output rule is applied.
A BMI-based range does not measure body composition. Use the Body Fat Calculator when you need a separate estimate of body-fat percentage.
Worked example
170 cm adult range: Height: 170 cm. The expected result is Lower boundary: 53.5 kg; Upper boundary: 72 kg; Range midpoint: 62.7 kg.
Interpretation and limitations
- BMI-based ranges are screening references, not individualized recommendations.
- This adult tool is not intended for children or pregnancy.
- Keep the stated units, assumptions, and population or jurisdiction with the result.
- Do not use a rounded display value as an exact input to another calculation.
For a mass estimate that separates lean tissue from total body weight, continue with the Lean Body Mass Calculator.
Inputs, outputs and result meaning
Calculates range midpoint, lower boundary, and upper boundary from height with visible method, validation, precision, and limitations.
Inputs
- Height
- Supported units include centimeters (cm), meters (m), inches (in), feet (ft), and feet / inches (ft / in). The supported range is 0.9144 through 2.7432.
Outputs
- Range midpoint
- This is the primary result. It is displayed in kg. The visible value uses up to 1 decimal places according to the output rule.
- Lower boundary
- It is displayed in kg. The visible value uses up to 1 decimal places according to the output rule.
- Upper boundary
- It is displayed in kg. The visible value uses up to 1 decimal places according to the output rule.
Weight range = BMI boundary × height². Keep the result label, unit, selected mode, and stated limitations together when sharing the answer.
Frequently asked questions
What does the Healthy Weight Calculator calculate?
Calculates range midpoint, lower boundary, and upper boundary from height with visible method, validation, precision, and limitations.
Which formula or method does the Healthy Weight Calculator use?
Weight range = BMI boundary × height².
How should I interpret the range midpoint?
Interpret range midpoint with its unit, method, assumptions, and supporting outputs.
Which inputs and units does the Healthy Weight Calculator support?
The supported fields are Height. Their visible labels, choices, units, and validation guidance define the accepted input.
What limitations or edge cases affect the Healthy Weight result?
BMI-based ranges are screening references, not individualized recommendations.
Sources and transparency
The sources define the method or interpretation context. Calculator fixtures verify ordinary, boundary, and invalid-input behavior; they do not create a professional recommendation.