FrameFit

Ideal Weight Calculator

Four classic ideal-weight formulas, side by side — so you can see the range rather than chase a single number.

Height (cm)

Ideal weight range

70.4 kg → 75.2 kg

Hamwi formula: 75.2 kg
Devine formula: 73.2 kg
Robinson formula: 71.1 kg
Miller formula: 70.4 kg

What you entered

Gender: MaleHeight: 178 cm

1
Inches over 5 feet
178 cm ÷ 2.54 − 60= 10.1 in
2
Hamwi formula
48.0 + 2.7 × 10.1= 75.2 kg
3
Devine formula
50.0 + 2.3 × 10.1= 73.2 kg
4
Range across all 4 formulas
min–max of Hamwi, Devine, Robinson, Miller= 70.4–75.2 kg

Result

Ideal weight range: 70.4 kg – 75.2 kg

These are population-average formulas from the 1970s-80s — none account for muscle mass or frame size directly, so treat the range as a rough guide rather than a target to hit exactly.

Ideal body weight by the four standard formulas

Hamwi, Devine, Robinson, and Miller are four clinical formulas that disagree with each other, which is why this calculator shows all four rather than picking one.

Height	Sex	Hamwi	Devine	Robinson	Miller	Range
170 cm	Male	66.7 kg	65.9 kg	65.2 kg	66.0 kg	65.2 - 66.7 kg
180 cm	Male	77.3 kg	75.0 kg	72.6 kg	71.5 kg	71.5 - 77.3 kg
190 cm	Male	88.0 kg	84.0 kg	80.1 kg	77.1 kg	77.1 - 88.0 kg
160 cm	Female	52.1 kg	52.4 kg	54.1 kg	57.2 kg	52.1 - 57.2 kg
170 cm	Female	60.7 kg	61.4 kg	60.8 kg	62.5 kg	60.7 - 62.5 kg

The formulas were built for drug dosing, not for setting a personal weight goal, and they spread further apart the taller you are. General wellness information only, not medical advice. Discuss any health decision with a qualified clinician.

There's no single right answer

Each formula gives a slightly different number because they were developed for different populations and purposes (medication dosing, military fitness, life-insurance tables). Use the range, not the average.

Why ideal weight formulas differ

Devine (1974) was designed for drug dosing, Hamwi (1964) for quick clinical estimates, Robinson (1983) for population averages, and Miller (1983) as an updated Devine. They all use height as the primary input and don't account for muscle mass, bone density, or body frame — which is why the range matters more than any single number.

Frequently asked questions

What is my ideal weight for my height?

It's a range, not one number. For a 170 cm (5'7") person: Devine says 62 kg, Hamwi says 65 kg, Robinson says 63 kg, Miller says 61 kg. The healthy BMI range (18.5–24.9) puts you at 53–72 kg for that height. Body composition (muscle vs fat) matters more than the number on the scale.

How accurate are ideal weight calculators?

They're rough guidelines, not prescriptions. These formulas don't account for muscle mass, bone density, age, or ethnicity. A muscular 80 kg person at 170 cm might be healthier than a sedentary 65 kg person at the same height. Use them as a starting reference alongside body fat percentage and waist circumference.

Is BMI or ideal weight a better measure?

Neither is complete on its own. BMI gives a single number for screening. Ideal weight formulas give a range that's easier to set as a target. Both ignore body composition. For a better picture, combine with: waist circumference (under 102 cm for men, 88 cm for women), body fat percentage, and overall fitness level.