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A 175 centimetre adult on the male equation
Choose the male Devine equation and enter 175 centimetres. That height is 68.9 inches, so 8.9 inches over 5 feet. Devine adds 2.3 kg per inch and lands near 70.5 kg.
Height: 25% lower
Change height to 131 cm while keeping the other example values the same.
Height: 25% higher
Change height to 219 cm while keeping the other example values the same.
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Quick answer
What does the Ideal body weight calculate?
What Devine ideal weight and CDC healthy BMI range follow from your height? This calculator uses devine equation, and height to estimate devine ideal body weight immediately in your browser.
With the values currently entered, the result is 155.3 lb — Devine male ideal body weight. It also shows robinson 1983 estimate, cdc healthy-weight low (bmi 18.5), cdc healthy-weight high (bmi 24.9), height used, and height in inches.
How to use the Ideal body weight
- Replace the example values with your own numbers.
- Review the result and supporting figures as they update automatically.
- Check the formula and assumptions before using the estimate for a decision.
Inputs used
- Devine equation
- Height — entered in cm
Ideal body weight formula
Devine: 50 kg (male) or 45.5 kg (female), plus 2.3 kg per inch over 5 feet. Robinson uses 51.65 + 1.85 (male) or 48.67 + 1.65 (female). Healthy BMI weights = 18.5–24.9 × height in metres squared.
Assumptions
- Devine (1974) and Robinson (1983) published adult IBW equations from height. Both start at 5 feet. Height is converted at 2.54 cm per inch.
- CDC adult healthy weight is BMI 18.5 to 24.9. That band is a screening range for adults 20 and older, not a personal target.
Verify the inputs
Authoritative sources
These sources explain the definitions, factors, or rules behind this tool. Their geographic scope is shown because an official source for one country is not automatically valid somewhere else.
Prints the Devine equations: 50.0 kg + 2.3 kg per inch over 5 feet for men, and 45.5 kg + 2.3 kg per inch over 5 feet for women.
Determination of ideal body weight for drug dosage calculationsAmerican Journal of Hospital PharmacyScope: Published adult IBW regressions; 1983Robinson et al. report IBW as 51.65 kg + 1.85 kg per inch over 5 feet for men, and 48.67 kg + 1.65 kg per inch over 5 feet for women.
Adult BMI categoriesUS Centers for Disease Control and PreventionScope: Adult screening categories; US sourceDefines adult BMI as kilograms ÷ metres squared and publishes the underweight, healthy-weight, overweight, and obesity cutoffs.
Sources do not endorse Calculum. Check the source date, scope, and your own documents before making a financial, tax, insurance, or reporting decision.
Practical guide
Ideal body weight example and edge cases
Ideal body weight here is a published height equation, not a personal goal. Devine starts at 50 kg for men or 45.5 kg for women, then adds 2.3 kg for each inch over 5 feet.
Example: A 175 centimetre adult on the male equation
Choose the male Devine equation and enter 175 centimetres. That height is 68.9 inches, so 8.9 inches over 5 feet. Devine adds 2.3 kg per inch and lands near 70.5 kg.
- Devine equation
- Male equation
- Height
- 175 cm
Calculated result155.3 lbDevine male ideal body weight
Read Devine first, then Robinson and the CDC 18.5 to 24.9 band. If you want a BMI number from a typed weight instead, use the body mass index calculator.
Example results use the default display profile. The calculator above follows your selected country and units.
How to read the result
- Devine and Robinson can disagree by a few kilograms. Both are height-only equations from the 1970s and 1980s.
- The CDC band is a screening range for adults 20 and older. It is wider than one IBW point.
Edge cases worth checking
Height is under 5 feet
The published equations start at 5 feet. The math still runs with a negative inch count. Treat that result as outside the original tables.
The person lifts or has a large frame
A higher useful weight can sit inside the CDC band and above Devine. Compare the BMI calculator with the actual weight before you chase the IBW number.
What changes the result most
Devine equation
Change devine equation on its own first. This shows how strongly it affects the answer.
Height
Measure height with the same unit shown beside the input. Convert first if your source uses another unit.
Try a different scenario
Small changes show whether the answer is stable or sensitive.
Height: 25% lower
131 cm67.5 lbDevine male ideal body weight
Height: 25% higher
219 cm243.2 lbDevine male ideal body weight
Common mistakes
Check devine equation
Devine (1974) and Robinson (1983) published adult IBW equations from height. Both start at 5 feet. Height is converted at 2.54 cm per inch. Make sure this matches the number you enter.
Keep height consistent
CDC adult healthy weight is BMI 18.5 to 24.9. That band is a screening range for adults 20 and older, not a personal target. Use the same units and time period throughout the calculation.
Do not rely on one ideal body weight scenario
Run a cautious case and an optimistic case. The range is often more useful than one exact-looking number.
Use this result well
What Devine ideal weight and CDC healthy BMI range follow from your height?
Use it for activity planning, not medical diagnosis or individualized health advice.