Standard weight is the ideal weight considered healthiest for your height. When you set a diet goal, it gives a concrete number to answer questions like "How much do I need to lose?" or "Is my weight about right?" Enter just your height and this calculator returns your standard weight based on BMI 22, along with the healthy weight range (BMI 18.5–22.9) generally regarded as posing no health concern. Add your current weight and you can immediately see how far you are from your standard weight and whether you fall within the healthy range.
There are several formulas for standard weight, but this tool uses the most reliable and internationally accepted BMI-based method. It calculates standard weight as 22 × height(m)², because BMI 22 is the value associated with the lowest mortality and disease risk. This reflects body type more sensibly than older simple formulas such as (height−100)×0.9. The height and weight you enter are never sent to a server and are used only for the calculation inside your browser.
How to Use
- 1
Enter your height
Enter your height in centimeters (cm).
- 2
Check your standard weight
Your standard weight (based on BMI 22) and healthy weight range are shown automatically.
- 3
Enter current weight (optional)
Add your current weight to see the gap from your standard weight and how much you would need to gain or lose to enter the healthy range.
- 4
Copy the result
Use the copy button to save the result as text and put it to work in your goal tracking.
When It's Useful
Set a diet target weight
Add your current weight to see, as a number, how many kilograms you need to lose to reach the healthy range.
Check for being underweight
See whether your weight is below the lower bound of the healthy range so you can stop excessive cutting or plan to gain.
Find your healthy weight range
Instead of a single exact number, get the broad healthy band corresponding to BMI 18.5–22.9.
Set weight benchmarks for family and children
Since standard weight follows from height alone, you can easily gauge an appropriate weight for family members.
Tips
- Standard weight is not a single "point" — you can be healthy anywhere within the healthy range. There is no need to hit BMI 22 exactly.
- Rather than rapid weight loss, keeping it within 5% of your current weight per month helps prevent yo-yo rebound and muscle loss.
- When losing weight, reducing body fat while preserving muscle matters more than the number on the scale. Use a BMR calculator to check an appropriate calorie intake at the same time.
- Height is tallest in the morning and shorter in the evening. Keep your measurement conditions consistent for reliable comparison.
- Standard weight (BMI 22) sits slightly above the middle of the healthy range, not at its center. Being closer to the lower bound (BMI 18.5) does not make you healthier.
- People with a lot of muscle can be healthy even above their standard weight. Do not fixate on the scale number — look at body fat percentage too.
FAQ
How is standard weight calculated?
Standard weight = 22 × height(m)². For example, at 170cm it is 22 × 1.7 × 1.7 ≈ 63.6kg.
Why use BMI 22 as the standard?
Around BMI 22 is associated with the lowest mortality and disease risk, so it is widely used internationally as the reference value for calculating standard weight.
How is the healthy weight range determined?
It follows the Korean Society for the Study of Obesity criteria, which regards BMI 18.5 up to 22.9 as normal, applying those BMI values to your height to compute the range.
How does this differ from a formula like (height−100)×0.9?
That simple formula carries large errors for very tall or very short people. The BMI-based method scales with the square of height and reflects body type more sensibly.
Do I have to match my standard weight exactly to be healthy?
No. Standard weight is just a reference point; if you are within the healthy weight range, you are considered to have no health concern. Your body composition and individual health status matter more.
If I have a lot of muscle, is it okay to exceed my standard weight?
With a lot of muscle, you can be healthy with a low body fat percentage even above your standard weight. Do not judge by the scale alone — check body fat percentage as well.
Do I have to enter my current weight?
No. Entering just your height gives the standard weight and healthy range. Adding your current weight additionally shows the gap from standard and how much to gain or lose to enter the healthy range.
Is the information I enter stored?
No. Your height and weight are used only for the calculation inside your browser and are never sent to or stored on a server.