Use the range as a goal, not a verdict
Devine, Hamwi, Robinson, and Miller each estimate a weight from height and sex. They were built for clinical dosing and reference charts, and they cluster. The useful output is the spread. Pick a goal inside it that you can reach without living at the bottom of a crash diet. If your current weight is already inside the spread, the plan may be a hold plus a body-fat check, not a long cut.
At 170 cm the BMI 18.5 to 24.9 window is about 53 to 72 kg (18.5 × 1.70² and 24.9 × 1.70²). Compare that window with the four formula weights the form prints. Where they overlap is a reasonable place to set the goal. The height-weight screen is on BMI and your weight goal. A date for the weight you choose is on theweight loss calculator.
What each formula is adding
Each line starts from a base at 5 feet (60 inches) and adds a fixed amount per inch above that. Heights under 5 feet stay at the base. The form converts your centimetres to inches and runs all four.
- Devine (1974): men 50 kg + 2.3 kg per inch over 5 feet; women 45.5 kg + 2.3 kg.
- Hamwi (1964): men 48 kg + 2.7 kg per inch; women 45.5 kg + 2.2 kg.
- Robinson (1983): men 52 kg + 1.9 kg per inch; women 49 kg + 1.7 kg.
- Miller (1983): men 56.2 kg + 1.41 kg per inch; women 53.1 kg + 1.36 kg.
The equation sheet, with the same four names laid out as formulas, is theideal weight calculator on Calories Calculator.
Track the goal you picked
The number only matters if the week of eating matches it.MyPlate: Calorie Deficit App sets a daily target from your goal and logs meals by photo or barcode. Free to download, try every feature free. 3-day free trial. If the goal weight and your waist tell different stories, checkbody fat before you push the target lower.
Sources
- Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650-655.
- Hamwi GJ. Therapy: changing dietary concepts. In: Danowski TS, ed. Diabetes Mellitus: Diagnosis and Treatment. 1964.
- Robinson JD, Lupkiewicz SM, et al. Determination of ideal body weight for drug dosage calculations. Am J Hosp Pharm. 1983;40(6):1016-9.
- Miller DR, Carlson JD, et al. Comparison of formulae used to calculate ideal body weight in the obese patient. Am J Hosp Pharm. 1983;40(10):1622-5.
Frequently asked questions
How do I pick one goal from four formulas?
Treat the four results as a band. A practical goal is inside that band, or inside the weight that matches BMI 18.5 to 24.9 at your height, and it is a weight you have held before or can reach at about 0.5 kg a week. You do not have to hit the lowest formula.
Is the formula weight the same for every person of my height?
No. Frame, muscle, and age move a sensible goal around inside the band. A lifter can sit above the Devine number and still be lean. Use a body-fat estimate when the scale and the mirror disagree.
What do I do after I choose the number?
Put it into the weight-loss calculator with a pace. That page returns a daily calorie target and a rough date. Then log intake against the target. MyPlate: Calorie Deficit App does that from a photo or a barcode. Free to download, try every feature free. 3-day free trial.