What should I weigh for my height?

A range rather than a figure. For most adults it is the weight that puts your BMI between 18.5 and 24.9, which at 1.75 m spans roughly 57 to 76 kg.

Does frame size really matter?

Modestly. Skeletal build shifts the sensible range by around 10 per cent, which is meaningful but far smaller than the natural width of the healthy range itself.

Why do older formulas give one number?

Formulas such as Devine and Robinson were developed for medication dosing, not health guidance, and were never intended as personal weight targets.

Is being at the bottom of the range best?

No. The whole range is healthy, and being underweight carries its own risks. Where you sit within it depends on build, muscle mass and age.

Ideal Weight Calculator - Healthy Range for Your Height

Ideal Weight Calculator

There is no single ideal weight for a given height — there is a range, and where you sit sensibly within it depends on your build. This calculator gives that range and adjusts it for frame size.

Formula

Devine (men) = 50 + 2.3 × (height in inches − 60)

Devine (women) = 45.5 + 2.3 × (inches − 60)
Hamwi, Robinson and Miller use the same shape with different constants

5 ft 10 in is 70 inches: 50 + 2.3 × 10 = 73.0 kg for a man

How the Range Is Derived

The healthy range comes from the standard BMI band of 18.5 to 24.9, rearranged to solve for weight:

Weight = BMI × height (m)²

At 1.75 m: 18.5 × 3.06 = 56.7 kg at the lower end, and 24.9 × 3.06 = 76.3 kg at the upper. That is a range nearly 20 kg wide, and all of it is classed as healthy.

Adjusting for Frame Size

Skeletal build genuinely varies, so the range shifts by roughly 10% either way: a small frame sits nearer the lower end and a large frame nearer the upper.

The same 1.75 m person with a large frame has a range of about 62.3–83.9 kg.

A rough frame check: wrap your thumb and middle finger around the opposite wrist. Overlapping suggests a small frame, just touching medium, and not meeting large.

Treat the Number Loosely

Like BMI, this takes no account of muscle mass, body composition or fat distribution. A muscular person can sit above the range in excellent health, and someone within it can carry an unhealthy amount of visceral fat. Waist circumference and body fat percentage both tell you more about risk than weight alone.

Quick Reference

Devine formula. These are population references, not targets.
Height	Men	Women
5 ft 4 in	59.2 kg	54.7 kg
5 ft 7 in	66.1 kg	61.6 kg
5 ft 10 in	73.0 kg	68.5 kg
6 ft 1 in	79.9 kg	75.4 kg

Frequently Asked Questions

What should I weigh for my height?: A range rather than a figure. For most adults it is the weight that puts your BMI between 18.5 and 24.9, which at 1.75 m spans roughly 57 to 76 kg.
Does frame size really matter?: Modestly. Skeletal build shifts the sensible range by around 10 per cent, which is meaningful but far smaller than the natural width of the healthy range itself.
Why do older formulas give one number?: Formulas such as Devine and Robinson were developed for medication dosing, not health guidance, and were never intended as personal weight targets.
Is being at the bottom of the range best?: No. The whole range is healthy, and being underweight carries its own risks. Where you sit within it depends on build, muscle mass and age.