Want to Achieve Your Ideal Weight? Learn How to Calculate It!
Being too thin or too overweight is not good. Besides beauty standards, your metabolism will also be disrupted. This is because when your body is in such a condition, pathogens can more easily enter your body. So, you must know how to calculate your ideal weight.
Everyone surely has different ideals regarding this. It will depend on several factors, such as gender, age, and height. To help you understand better, below is an explanation of how to calculate the ideal weight formula for women, men, children, and babies!
Weight Calculation Formula
The easiest formula for you to use to find out whether your weight is ideal is to calculate your BMI as follows!
1. Women

Basically, the average BMI of Indonesian women aged 17-25 is 25.2. This means it is only slightly above the normal BMI, which is below 25. This is because, according to statistics, the average height of Indonesian women in this age range is 1.54 m with an average weight of 59.8 kg.
Of course, a woman's ideal weight can be easily calculated using the following formula:
[Weight (kg) : Height (m) x Height (m)]
For example, if you are 1.5 meters tall and weigh 50 kg. Then, your BMI is:
[50 : 1.5 x 1.5]
= [50 : 2.25]
= 22.22
For your information, 22.22 is a normal BMI. This is because the number is between 18.5 and 25, which is the normal range. If it is less than 18.5, you will need to gain weight. However, if it is more than 25, you will need to lose weight.
2. Men

Just like women, the average BMI of Indonesian men is also only slightly higher than the normal figure, which is 25.4. This is because the average height of Indonesian men is 1.73 m with an average weight of 76.2 kg.[1] As a note, that is the average BMI for men aged 17-25.
In general, you can calculate a man's ideal weight in the same way as a woman's BMI, namely:
[Weight (kg) : Height (m) x Height (m)]
For example, if you are 1.7 meters tall and weigh 70 kg. Then, your BMI is:
[70 : 1.7 x 1.7]
= [70 : 2.89]
= 24.2
So, your weight is still normal and ideal because it is in the range of 18.5-25.
3. Children

Unlike adults, children have different average weights for each age group. For example, a 2-year-old child has an average height of 85.5 cm and an average weight of 12.02 kg. Meanwhile, a 12-year-old child has an average height of 149.8 cm and a weight of 41.5 kg.[2]
Of course, the way to calculate the ideal weight for women and men by age uses the same formula as the general BMI, namely:
[Weight (kg) : Height (m) x Height (m)]
For example, if your child is 1.2 meters tall and weighs 40 kg. Then, your child's BMI is:
[40 : 1.2 x 1.2]
= [40 : 1.44]
= 27.7
So, your child is overweight.
4. Babies

Unlike the other formulas, calculating a baby's ideal weight uses a different formula. If your baby is between 1-6 months old, you can use the following formula:
[Birth weight (grams) + age (months) x 600 (grams)]
However, if your baby is between 7-12 months old, you can use the following formula:
[Birth weight (grams) + age (months) x 500 (grams)]
For example, if you have a 5-month-old baby who weighed 3.2 kg at birth. Then, ideally, the baby should weigh:
[3200 + 5 x 500]
= [3200 + 2500]
= [5700]
So, ideally, your baby's weight at 5 months should be 5,700 grams or 5.7 kg.
Tips for Maintaining an Ideal Weight

After understanding the easy formula to calculate it, you also need to know several tips to keep your weight within the normal BMI range. The methods are relatively easy for you to do, namely by following these tips!
- Pay attention to meal times, and if possible, try to always eat at the same time.
- Make sure to meet your daily calorie needs with the right portion sizes.
- Don't forget to exercise to burn off excess calories.
- Always meet your daily fluid needs.
- Eat more foods rich in fiber, vitamins, and minerals.
- Get enough sleep.
- Avoid stress and other mental health issues.
Then, don't forget to always remember how to calculate your ideal weight above to find out whether you need to maintain, increase, or decrease it. Besides pursuing an ideal weight, you also need to start applying a healthy lifestyle from now on!
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