Ideal Weight Calculator

Select gender and enter height above, and the tool works out your ideal weight, a healthy weight range built from four medical formulas used since the 1970s.

 Not one guess, four separate calculations averaged into a single range that fits your exact frame.

Most adult women land somewhere between 45 and 75 kg depending on height, and most adult men fall between 55 and 90 kg.

 Height moves that number more than any other input, which is exactly why a single average number never fits any one person as well as a calculator built around their own measurements.

What Is Ideal Weight, Actually?

Ideal weight is a healthy bodyweight range calculated from height and gender using established medical formulas. It started as a tool for drug dosage calculations, not appearance, and four formulas still carry that original purpose today: Devine, Robinson, Miller, and Hamwi.

Doctors and dietitians reach for ideal weight because it gives a starting reference point for health goals, not a fixed target anyone must hit exactly. Gender and height decide the baseline, and the calculator above runs both through all four formulas for a single, balanced answer.

How to Use the Ideal Weight Calculator

Two fields, one click, done.

1. Pick gender from the dropdown.
2. Choose a height unit, centimeters or feet and inches.
3. Enter height in the selected unit.
4. Select Calculate.
5. Read the ideal weight range that appears underneath.

Nothing here gets saved or sent anywhere, so feel free to run it again with a different height to compare.

Ideal Weight Chart by Height and Gender

The table below lists average ideal weight ranges across common heights, blended from the four formulas explained further down this page.

Two people at the same height can still land in different spots within that range once body frame size enters the picture, which the body fat calculator breaks down in more detail.

How Ideal Weight Is Calculated

Ideal weight starts with a base kilogram value at five feet, then adds a fixed amount per inch above that height. Four formulas run this math differently, and the calculator above averages all four for balance.

Devine formula, men: 50 kg plus 2.3 kg per inch over five feet Devine formula, women: 45.5 kg plus 2.3 kg per inch over five feet

Robinson formula, men: 52 kg plus 1.9 kg per inch over five feet Robinson formula, women: 49 kg plus 1.7 kg per inch over five feet

Miller formula, men: 56.2 kg plus 1.41 kg per inch over five feet Miller formula, women: 53.1 kg plus 1.36 kg per inch over five feet

Hamwi formula, men: 48 kg plus 2.7 kg per inch over five feet Hamwi formula, women: 45.5 kg plus 2.2 kg per inch over five feet

Take a 5 foot 10 inch man, ten inches over the five foot mark. The Devine formula lands him at 73 kg, Robinson at 71 kg, Miller at roughly 70 kg, and Hamwi at 75 kg. 

Averaged together, his ideal weight range sits close to 72 kg, which matches what the calculator above returns for the same height.

Once an ideal weight range exists, checking daily calorie needs against it becomes the next logical step, which the TDEE calculator handles directly.

Factors That Change Your Ideal Weight

Height sets the baseline, but five other factors shift the final number for any one person.

1. Age barely moves ideal weight past the growth years, roughly 15 for girls and 17 for boys, since height itself stays fixed after that point.
2. Gender changes both the starting kilogram value and the per-inch increment in every formula above.
3. Body frame size, small, medium, or large boned, shifts the healthy range up or down at the same height.
4. Muscle mass adds weight without adding fat, which pushes some genuinely healthy people above their calculated range.
5. Fat distribution around the waist carries more health risk than the same fat spread across hips and thighs, even at matching total weight.

A person with a large body frame naturally sits higher in their ideal weight range than someone with a small frame, even at identical height and gender.

From Ideal Weight to a Real Goal

Ideal weight on its own is just a range. Turning it into a goal means comparing current weight against that range and deciding on a realistic pace.

1. Within range: current habits are holding a healthy weight, and the goal becomes maintenance.
2. Below range: a modest calorie surplus with strength training closes the gap over months, not weeks.
3. Above range: a moderate calorie deficit, paired with regular movement, brings weight down gradually toward the range.

A weekly pace of half a kilo up or down tends to be sustainable for most adults working toward either end of their range.

Once a target weight and timeline exist, matching daily protein to that goal becomes the next step, which the protein intake calculator sets up directly.

Where the Ideal Weight Formula Falls Short

All four formulas share the same two inputs, height and gender, and nothing else. Two people at identical height and gender can carry very different amounts of muscle, bone density, and organ mass, yet the formulas return the same number for both.

Athletes, bodybuilders, pregnant women, and adults significantly outside average body composition should treat the result as a general reference rather than a personal target.

 Body frame size and muscle mass explain most of the gap between a calculated number and a genuinely healthy weight for any one individual.

Cross-checking against a full BMI calculator reading rounds out the picture, since BMI adds current weight into the equation that ideal weight formulas leave out.