How Much Should I Weigh For My Height And Age.

So how much should i weigh for my height and age? Well, despite being a very common question each one of us keep asking, we need to take the answer very seriously. To calculate your ideal weight accordingly you must know your BMI or Body Mass Index, which is basically a relationship between your body fat, height and age. This number will help determine if you are overweight and at risk of diseases, it will also tell how many pounds to lose in order to reach your goal. Lets take a look at how to calculate your ideal weight.



Note: Fill the form and press calculate and the results will show below.

Explaining The Body Mass Index Results.

Once the results shows up, lets take a look at an example:

BMI: This is your current body mass index value according to your height and age.

normal BMI range: This is the theoretical range value of your BMI or body mass index for your body.

Your ideal weight range for your height and age is: two values shows here, the one associated with the lowest weight possible without falling in the category of underweight, and the highest permissible value you can weight for not going overweight.


Now that you know your ideal weight for your height and age, you can try our calorie calculator to understand how many calories you should be eating on a daily basis.


Extreme Cases Above Overweight.

There are several individuals who will weigh more than the average person, and cross the limit of being overweight. To make things easier lets take a look at this table:

CategoryBMI range – kg/m2
Severely underweightless than 16.0
Underweightfrom 16.0 to 18.5
Normalfrom 18.5 to 25
Overweightfrom 25 to 30
Obese Class Ifrom 30 to 35
Obese Class IIfrom 35 to 40
Obese Class IIIover 40

The table above shows the several categories that classify individuals according to their BMI range. As you can see there are 4 types of obese people, the overweight, Obese Class I,Obese Class II,and Obese Class III which the lather 3 are considered extreme cases and should be looked upon by a health care professional. Most of us will fall into either the Normal or Overweight type, and to lose weight its recommended to eat a healthy balanced diet as well as regular exercises.  Anorexia and bulimia are eating disorders which takes the categories Severely underweight and Underweight, which we will be discussing in later chapters.


Asian BMI Ranges.

In Asian countries however, the BMI range was revised as we can see on the next table:

Japan and Hong Kong definition

CategoryBMI range – kg/m2
Normalfrom 18.5 to 22.9
Overweightfrom 23.0 to 24.9
Obese25.0 and above

This fact shows that an American person which is on the Normal weight range, can be easily considered overweight in Asian standards.

Body Fat Percentage to measure your Ideal Weight.

Your body fat percentage plays an important role when looking at your ideal weight. Body fat percentage refers to the amount of fat(which consists of storage body fat and essential body fat) divided by your total weight. This number is then multiply by 100 giving us the percentage. Lets take a look at common numbers for this variable.


The percentage of essential fat (not storage fat) is 8 to 12% in women and 3% to 5% in men.

(source: Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Body Composition Chapter 6).

As you can see women need a higher fat percent than men do, due to hormonal predisposition.

Here is the complete table:

Essential body fat8–12%3–5%
Pro athletes14-20%6–13%
Fitness level21-24%14–17%
average person25-32%18-24%
In Excess32+%25+%

Why do we need to know our body fat percentage?

Good question. Short answer: its more accurate than your Body Mass Index(BMI) as explained above.

Long answer: BMI measurements dont take into consideration the fitness shape that we see on TV, magazines, models and general media. Therefore in terms of fitness(and the reason we want to lose that belly fat), the body fat percentage accurately measures the ideal image that fitness trainers will want you to achieve.

The easiest way to calculate your body fat percentage is by visiting your health care professional. He or she will have specific tools to measure accurately your percent and can provide you with health care advice regarding your weight as well. One of the most common tools used is the Body fat caliper as shown below:

Body fat caliper on right side. Courtesy of flickr  by skamille 



Waist to Hip Ratio.

Another useful measurement for your ideal body shape is what is known as Waist – Hip ratio, or  measure of your waist divided by measure of your hips.

Practical way to measure your Waist and Hip.

A youtube video is worth a thousand words. Explanation of WHR ( waist-hip ratio)actually starts at 0:53 seconds, this video was so detailed that i decided to share it here:


So now that you know how to calculate your waist-hip ratio, did you find out your body is perfect? Please let us know on the comments.

The waist -hip ratio is a more accurate measure in terms of attractiveness, specially in women in which the perfect ratio is somewhere between 0.6 and 0.7 regardless of your height and age.



After reading this long article you learned about your Body Mass Index (BMI), you calculated your BMI and your ideal weight based on your height and age. You also accessed 2 more health measure variables, the Body Fat Percentage (which can be measure using a body fat caliper), and the Waist-Hip Ratio (WHR) which you learn how to measure by viewing the video. You understand that the Body Mass Index is not a perfect measure, but is somewhat very practical in terms of knowing your ideal weight. We hope you find this article very useful.


Leave a Comment

Your email address will not be published. Required fields are marked *