Ideal Weight Calculator — Devine, Robinson, Miller, BMI 22

Calculator

An ideal weight calculator estimates the body weight statistically associated with lower health risk for a given height, using the Devine, Robinson, and Miller formulas and a BMI 22 reference.

Ideal Weight Calculator

Runs in this browserNot health advice

Inputs are calculated only in this browser. Results are statistical estimates and do not replace medical or nutrition advice.

Examples

Sex code (male 1, female 0)

Height

Scenario A/B comparison

Ideal weight range

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What is it

Ideal body weight (IBW) is a statistical estimate of the weight considered lower-risk for a given height. The Devine (1974) formula was originally created for drug dosing, Robinson (1983) and Miller (1983) are later corrections, and multiplying height(m)² by a BMI of 22 is another common convention. The formulas differ by several kilograms, so treat the output as a range rather than a single answer; none of them account for muscle mass or body composition, and they do not replace medical judgment.

Devine: male 50 + 2.3×(height(in) − 60), female 45.5 + 2.3×(height(in) − 60); Robinson: male 52 + 1.9×, female 49 + 1.7×; Miller: male 56.2 + 1.41×, female 53.1 + 1.36×; BMI method: height(m)² × 22

How to use

1Enter the sex code (male 1, female 0).
2Enter height in cm.
3Press calculate to see ideal weight from all four formulas as a range.

Reference

Ideal Weight Calculator — Devine, Robinson, Miller, BMI 22 Reference
Formula	Male 175 cm	Female 160 cm
Devine (1974)	70.5 kg	52.4 kg
Robinson (1983)	68.9 kg	54.1 kg
Miller (1983)	68.7 kg	57.2 kg
BMI 22	67.4 kg	56.3 kg

Sources & standards

The origin of the "ideal" body weight equations (Pai & Paloucek, 2000) - Annals of Pharmacotherapy
Appropriate body-mass index for Asian populations - WHO Expert Consultation

FAQ

What is the ideal weight for a 175 cm male?

About 67.4–70.5 kg depending on the formula: Devine 70.5 kg, Robinson 68.9 kg, Miller 68.7 kg, and 67.4 kg at BMI 22. Treat it as a range.

Why do the formulas give different values?

Each formula was built for a different purpose and dataset. Devine is an empirical drug-dosing rule while Robinson and Miller are corrections based on insurance statistics, so differences of a few kilograms are expected.

Is it a problem if I differ from the ideal weight?

Not necessarily. IBW is a statistical estimate that ignores muscle mass and body composition. Health assessment should combine body fat, waist circumference, and professional medical advice.

Is my height data sent to a server?

No. This calculator runs entirely in your browser and does not send or store your inputs.