How to Calculate Ideal Body Weight Based on Height

Many people think that ideal body weight is only determined by the number on the scale. In fact, the same weight is not necessarily ideal for everyone because height also influences body proportion.

Knowing the appropriate weight range for your height helps you set more realistic goals and maintain your body weight within a healthy range. This approach can also be an initial step to monitor changes in body weight in a more structured manner.

However, calculating it is not enough with just height. Broca's formula, BMI, gender, age, and body composition also need to be considered. Let's look at how to calculate it accurately.

[[svrg_takeaways]]
title: Key Points:
- Ideal body weight needs to be adjusted according to height to achieve better and healthier body proportions.
- Broca's formula and BMI can be used to estimate ideal body weight based on height.
- Gender, age, muscle mass, body fat, and physical activity influence ideal body weight.
- Maintaining a healthy diet, physical activity, adequate sleep, and monitoring weight help maintain body weight.
[[/svrg_takeaways]]

Why Should Ideal Body Weight Be Adjusted to Height?

Adjusting body weight to height helps provide an overview of body proportions. Someone with a height of 180 cm certainly has different needs and weight ranges than someone with a height of 150 cm.

Ideal body weight can also be a benchmark for maintaining body weight within a healthy range. By knowing this range, you can determine body weight goals more realistically.

Also read: How to Maintain Stable Ideal Body Weight

How to Measure Ideal Body Weight Based on Height

1. Using Broca's Formula

Broca's formula is one of the simplest methods for estimating ideal body weight. The commonly used formula is:

Men:
Ideal weight = (height - 100) - 10% × (height - 100)

Women:
Ideal weight = (height - 100) - 15% × (height - 100)

For example, a woman with a height of 160 cm:

(160 - 100) - 15% × 60 = 51 kg

So, the estimated ideal weight according to Broca's formula is about 51 kg.

2. Using Body Mass Index (BMI)

BMI or Body Mass Index calculates the ratio of body weight to height. The formula is:

BMI = weight (kg) ÷ [height (m)²]

For adults, a BMI of 18.5 to less than 25 is generally used as the normal body weight range in WHO classification. A BMI below 18.5 is considered underweight, while a BMI of 25 or more is considered overweight.

BMI can be used to estimate the appropriate weight range for height, not to determine a single ideal weight number precisely.

3. Determining Weight Range from Height

To get the weight range based on BMI, use the limits of 18.5 and 24.9:

Minimum weight = 18.5 × height²
Maximum weight = 24.9 × height²

Height must be used in meters. For example, a height of 160 cm = 1.6 m.

Minimum weight: 18.5 × 1.6² = 47.4 kg
Maximum weight: 24.9 × 1.6² = 63.7 kg

Thus, the normal BMI weight range for a height of 160 cm is approximately 47.4–63.7 kg.

Also read: What is the Ideal Body Weight for Women? Here's How to Calculate It

Example of How to Measure Ideal Body Weight Based on Height

Here is an example of the weight range based on a BMI of 18.5–24.9 for adults. These numbers are estimates and not absolute benchmarks.

1. Height 140–150 cm

2. Height 151–160 cm

3. Height 161–170 cm

4. Height 171–180 cm

5. Height 181–190 cm

Also read: How to Easily Calculate Ideal Body Weight for Men

Factors Affecting Ideal Body Weight

Height is not the only factor determining a healthy body weight. Several other factors to consider include:

1. Gender: Men and women have differences in average muscle mass and body fat distribution.
2. Age: Body composition can change with age.
3. Muscle mass: People with high muscle mass can weigh more without necessarily having excess body fat.
4. Body fat composition: The percentage and distribution of fat provide a more complete picture of health than weight alone.
5. Level of physical activity: Regular activity affects muscle mass, energy expenditure, and body weight.

Also read: How to Calculate Body Weight: BMI, WHR, WtHR, & Body Fat

Is Height Alone Enough to Determine Ideal Body Weight?

Height can be a basis for calculating ideal body weight, but it is not sufficient to assess body condition comprehensively. Other factors such as age, gender, and body composition also need to be considered.

Broca's formula and BMI only provide an estimate of body weight based on height and body weight. Neither can directly measure muscle mass, fat percentage, or fat distribution.

Two people with the same height and weight do not necessarily have the same body condition. Someone who regularly does strength training, for example, may weigh more due to greater muscle mass.

Therefore, body weight assessment should not only focus on the scale number. Also pay attention to waist circumference, diet, physical activity, sleep quality, and overall health condition.

Also read: Fat Loss vs Weight Loss: Which is Better for Your Diet?

How to Maintain Body Weight According to Height

Maintaining body weight does not have to be done through extreme diets. Some simple habits can help maintain a healthy body weight.

1. Maintain a balanced diet: Consume protein, vegetables, fruits, carbohydrates, and healthy fats in amounts appropriate for your needs.
2. Engage in physical activity: Combine aerobic activity with strength training regularly.
3. Monitor body weight regularly: Regular weighing can help detect changes in body weight early.
4. Maintain sleep quality: Sufficient and quality sleep supports energy regulation and eating habits.

Ready to Maintain Ideal Body Weight According to Height?

Measuring ideal body weight based on height can be an initial step to understand your body condition and set more realistic goals. Use Broca's formula or BMI as a guide, then consider body composition and overall health condition.

Achieving and maintaining an appropriate body weight requires a balanced diet, regular physical activity, adequate sleep, and consistency. Choose activities that are comfortable to do regularly so that the fitness maintenance process feels easier and more sustainable.

To support daily activities and training, use comfortable and suitable sports equipment. You can explore various options of best sports equipment from SVRG to help maximize your training routine.

[[svrg_faq]]
title: FAQ about How to Measure Ideal Body Weight
- q: How to Determine Ideal Body Weight Based on Height?
a: You can use Broca's formula or BMI. BMI also allows you to calculate a weight range based on height, not just a single number.
- q: What is the Ideal Body Weight for a Height of 160 cm?
a: Based on a BMI range of 18.5–24.9, the body weight for a height of 160 cm is approximately 47.4–63.7 kg. This range is not an absolute ideal number because body composition also plays a role.
- q: What is the Ideal Body Weight for a Height of 170 cm?
a: For a height of 170 cm, the weight range based on a BMI of 18.5–24.9 is approximately 53.5–72.0 kg.
- q: Is the Ideal Body Weight for Men and Women Different?
a: It can be different. Gender affects the average muscle mass and body fat distribution. Broca's formula also uses different formulas for men and women.
- q: Is BMI Accurate for Determining Ideal Body Weight?
a: BMI is useful as a simple screening tool, but it cannot directly describe body composition. Muscle mass, body fat, age, and other health factors still need to be considered.
[[/svrg_faq]]