A free ideal weight calculator that shows four published formulas side by side, next to the healthy BMI range for your height.
See your ideal weight by four published formulas, next to the healthy BMI range for your height.
You
Entered once, used by every health calculator here, and saved only in this browser.
Your result
Fill in the fields above to see your result.
These calculators give general estimates for healthy adults, not medical advice. Talk to your doctor before you change how you eat or train, especially if you're pregnant, take medication or have a health condition.
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This free ideal weight calculator shows your ideal weight by four published formulas, Devine, Robinson, Miller and Hamwi, side by side. It puts them next to the healthy BMI range for your height, with your own weight marked.
I built it because each formula gives a different answer, and seeing only one makes it look more exact than it is. Seen together, they make a range you can aim for.
Here's where each formula comes from, how they differ, and how to pick a goal weight that suits you.
TL;DRKey takeaways
What is an ideal weight calculator?
An ideal weight calculator estimates a healthy weight from your height and sex. The formulas came from medicine, where a quick estimate of lean weight helps set drug doses.
Each formula is a base weight at 5 feet, plus kg for each inch over it.
How to use the ideal weight calculator
You only need your sex and height, and every health calculator here shares them.
Your numbers stay in this browser.
The four formulas
Here's each formula, in kg at 5 feet plus kg per inch over it.
- Men
- 50 + 2.3 an inch
- Women
- 45.5 + 2.3 an inch
- Men
- 52 + 1.9 an inch
- Women
- 49 + 1.7 an inch
- Men
- 56.2 + 1.41 an inch
- Women
- 53.1 + 1.36 an inch
- Men
- 48 + 2.7 an inch
- Women
- 45.5 + 2.2 an inch
Devine's is the one used most in medicine. Miller's starts higher and climbs slower, so it gives more at short heights and less at tall ones.
A worked example
Here's the example the calculator loads when you press Try an example.
A woman is 165 cm tall, about 5 feet 5 inches, and weighs 68 kg.
| Formula | Ideal weight |
|---|---|
| Devine | 56.9 kg |
| Robinson | 57.4 kg |
| Miller | 59.8 kg |
| Hamwi | 56.4 kg |
The formulas put her between 56.4 and 59.8 kg. The healthy BMI range at her height is 50.4 to 67.8 kg, and at 68 kg she's just above it.
How to pick your goal weight
The formulas give a range, and a few things move you within it.
Your frame and muscle
A strong, broad person sits well above the formulas and can be very healthy. The body fat calculator shows what your weight is made of.
The healthy BMI range
It's wider than the formulas, so it's a good outer limit. The BMI calculator shows yours.
How you feel and perform
A weight you can keep while you train, sleep and eat well beats a lower number you can't.
Mistakes to avoid
These make an ideal weight a bad goal.
- Treating one formula's number as exact
- Ignoring muscle, so a lean, strong person aims too low
- Picking a goal under the healthy BMI range
- Rushing toward the goal with too few calories
Pick a range, then use the calorie calculator to get there slowly.
Strength over a number
What your weight is made of matters more than the number.
If you are strong, you live better.
The longevity test looks at the things that matter more as you age, like strength and fitness.
Who is the ideal weight calculator for?
It's for anyone setting a goal weight, and these tools help you reach it.
- BMI calculator – for the healthy range at your height
- Body fat calculator – for what your weight is made of
- Calorie calculator – for a daily target and a date for your goal
- TDEE calculator – for what you burn in a day
- Protein calculator – for keeping muscle on the way
Pick your range here, then set a pace with the calorie calculator.
More health calculators
Every health calculator reads the same "You", so you only enter yourself once.
| Calculator | What it answers |
|---|---|
| BMI calculator | Is my weight healthy for my height? |
| Body fat calculator | How much of me is fat? |
| Calorie calculator | How do I get there? |
| TDEE calculator | What do I burn in a day? |
The calorie calculator turns your goal weight into a daily number and a date.
Plan your health with your AI
Take your numbers further in
Ideal Weight Calculator FAQs
Questions about the ideal weight calculator? Here's what to know.
An ideal weight calculator estimates a healthy weight from your height and sex.
This free one shows four published formulas next to the healthy BMI range.
Each formula takes a base weight at 5 feet and adds kg for each inch above it.
Devine's, for example, is 50 kg plus 2.3 kg an inch for men.
None is best for everyone.
Devine's is used most in medicine, and seeing all four gives a fairer range.
The four formulas give 56.4 to 59.8 kg.
The healthy BMI range at that height is 50.4 to 67.8 kg.
The four formulas give 70.4 to 75.2 kg.
No, they use height and sex only.
A muscular person can be healthy well above them.
They were built at different times from different data and for different uses.
Together they make a sensible range.
Yes, switch to US units and enter feet, inches and pounds.
No, it's a general estimate for healthy adults.
Talk to your doctor before you change how you eat or train, especially if you're pregnant, take medication or have a health condition.
Yes, it's free with no login, and your numbers stay in this browser.
I did.
I'm Navid Moazzez, and I made the ideal weight calculator as one of my free tools on navid.me.
More about me.
Navid Moazzez
AI business strategist & AI OS builder
Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.
Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.
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