Healthy Weight for Your Height: Chart and Practical Guide

Your healthy weight is not a fixed number or a magic figure carved in stone. It is a dynamic range that depends on your height, but above all on how your kilos are split between muscle mass, bone mass, water and body fat. Two people with exactly the same height and the same reading on the scale can have completely opposite metabolic profiles.

The WHO standard: healthy weight range by height

The World Health Organization defines the normative weight for adults using the Body Mass Index (BMI). A BMI between 18.5 and 24.9 kg/m² is considered a healthy range. To calculate the minimum and maximum weight for your height, multiply your height squared by both ends of the index.

The table below gives the ranges calculated directly for heights between 1.50 m and 1.95 m, including the statistical midpoint (BMI 21.7) that is commonly used as a central reference.

Why the traditional scale falls short

BMI was designed in the 19th century by the statistician Adolphe Quetelet as a tool for population studies, not as an individual clinical diagnostic method. Its major limitation is that it assumes all body weight has the same impact on health.

A kilo of muscle tissue takes up almost 18% less volume than a kilo of fat tissue, and it also produces a higher metabolic expenditure and improves insulin sensitivity. By contrast, excess intra-abdominal adipose tissue releases proinflammatory cytokines and overloads the cardiovascular system.

• False slimness (TOFI phenotype): People whose weight and BMI fall within the normative range but who have high body fat percentages and insufficient muscle mass.
• Muscular overweight: Athletes and strength-training practitioners whose BMI is above 25 or 26 but whose body fat percentage sits at optimal levels (10-15% in men, 18-22% in women).
• Hidden visceral fat: The accumulation of lipids around the digestive organs is far more harmful to the heart than subcutaneous fat on the hips or legs.

Complementary parameters: waist and waist-to-height ratio

To address the shortcomings of the weight-height pairing, the medical community uses direct anthropometric measurements. The one best supported by recent cardiovascular evidence is the waist-to-height ratio (WHtR).

The general WHtR rule is simple: your waist circumference should measure less than half of your height. If you are 1.70 m (170 cm) tall, your waist circumference should stay below 85 cm. A ratio above 0.5 indicates a significant increase in the risk of type 2 diabetes, dyslipidemia and hypertension, regardless of what the scale says.

As for the absolute values set by international cardiology consensus, the abdominal circumference cut-off points place the alert threshold at more than 94 cm in men and more than 80 cm in women, with very high risk from 102 cm and 88 cm respectively.

Adjustments needed for age, sex and ethnicity

The healthy weight threshold changes with the different stages of life and with the genetic characteristics of each population. Applying an identical scale to a 20-year-old and a 72-year-old leads to frequent diagnostic errors.

• People over 65: Several meta-analyses on longevity show that the range with the lowest mortality in old age shifts toward a BMI of 23 to 28. Slightly higher weight protects against cognitive decline, osteoporosis and sarcopenia.
• Differences between sexes: Women biologically require a higher essential fat percentage (around 10-13% versus 3-5% in men) to maintain hormonal function and a regular menstrual cycle.
• Populations of Asian origin: The WHO recommends setting the overweight cut-off at a BMI of 23 kg/m² for individuals of Asian descent, because they accumulate a greater proportion of visceral fat at lower body weights.

How to define your target weight in practice

If you are looking to improve your health or body composition, setting a blind numerical goal often leads to frustration or to loss of lean mass during aggressive calorie-restricted diets. It is better to structure your plan around functional criteria:

1. Identify your range from the BMI table to get an approximate reference and rule out pathological extremes.
2. Measure your waist circumference at navel level, fasted, to check whether your waist-to-height ratio is below 0.5.
3. Prioritize strength training and adequate protein intake (1.6 to 2.2 g per kilo of body weight) so that any calorie deficit reduces fat while preserving muscle.
4. Assess blood health markers (fasting glucose, lipid profile, liver enzymes) and daily energy levels above the exact number on the scale.

Frequently asked questions

Why do I weigh the same but my clothes fit looser?

This is due to the body recomposition phenomenon. If you have started strength training and eating better, you have very likely gained a kilo of muscle mass while losing a kilo of fat. Because muscle is much denser, your body volume decreases even though the total number on the scale does not change.

How much can weight fluctuate in a single day without it being fat?

Weight can easily swing between 1 and 3 kilos within 24 hours. These variations are due to fluid retention caused by the sodium you eat, digestive contents, muscle glycogen stores and hormonal changes. No sudden day-to-day change reflects real fat gain or loss.

Are historical formulas like Lorentz or Broca reliable?

Formulas such as Broca's (height in centimeters minus 100) or Lorentz's were empirical approximations from the last century that lack modern physiological validation. They tend to overestimate the advisable weight for short people and to penalize tall people excessively, which is why they have fallen out of use in favor of body fat analysis and waist circumference.

What is the most rigorous way to weigh yourself at home?

Always weigh yourself first thing in the morning, just after getting up, after urinating and before eating breakfast or drinking water. Do it two or three times a week on a hard, flat surface, and calculate the weekly average so you compare clean trends instead of obsessing over a single day's isolated reading.