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מחשבון משקל גוף אידיאלי

Devine Ideal Body Weight

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Detailed Guide Coming Soon

We're working on a comprehensive educational guide for the Ideal Body Weight Calculator in your language. The content below is shown in English.

What is Ideal Body Weight Calculator?

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Think of the Ideal Body Weight (IBW) calculator as a helpful starting point rather than a strict rulebook for your body. It uses several classic medical formulas—like Devine, Robinson, and Miller—to give you a ballpark figure based on your height and gender. We know that everyone’s body is unique, so instead of showing you just one magic number, we provide a range. This helps you see where you sit compared to common clinical benchmarks, which can be useful when you're setting general fitness goals or just curious about health standards. It’s super important to remember that these formulas don't know your life story. They don't account for how much muscle you’ve built in the gym, your bone structure, or your unique body composition. A professional athlete, for example, might weigh more than what these formulas suggest because muscle is denser than fat, yet they are perfectly healthy. Use this tool as a conversation starter with yourself or your doctor, not as a final verdict on your health or worth. Your metabolic health and how you feel in your daily life are always more important than a number on a scale.

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נוסחה

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f(x)Devine: Men = 50 + 2.3kg per inch over 5ft, Women = 45.5 + 2.3kg per inch over 5ft; Robinson: Men = 52 + 1.9kg per inch over 5ft, Women = 49 + 1.7kg per inch over 5ft; Miller: Men = 56.2 + 1.41kg per inch over 5ft, Women = 53.1 + 1.36kg per inch over 5ft; Hamwi: Men = 48 + 2.7kg per inch over 5ft, Women = 45.5 + 2.2kg per inch over 5ft.

Variable Legend

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סמלשםיחידהתיאור
HeightHeight—Your current height, which acts as the foundation for all these formulas.
GenderGender—Used because historical formulas use different baseline constants for biological males and females.
WeightCurrent Weight—Your actual weight, used to compare your current status against the formula-based targets.

How to Ideal Body Weight Calculator

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  1. 1Select your gender and enter your height in centimeters or inches.
  2. 2The calculator runs your stats through several established formulas (Devine, Robinson, Miller, and Hamwi) to find the 'ideal' range.
  3. 3It also checks your height against the standard healthy BMI range (18.5–24.9) to provide a broader context.
  4. 4Review the results as a range rather than a single 'correct' weight.
  5. 5Keep in mind that these are just estimates based on averages and don't factor in your individual muscle mass or frame size.

Worked Examples

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Example 1
Given:Female, 5'6" (168 cm)
תוצאה:Approximately 59 kg (130 lbs)

A general baseline for this height.

Using the Devine formula: 45.5kg + (2.3kg × 6 inches over 5ft) = 59.3kg. This shows the calculation in action for an average height.

Example 2Male Athlete Assessment
Given:6'0", Male
תוצאה:Approximately 73 kg (161 lbs)

Muscle mass can make a 'healthy' weight higher than the formula suggests.

Using the Robinson formula: 52kg + (1.9kg × 12 inches over 5ft) = 74.8kg. An athlete at this height might weigh 85kg due to muscle, showing why the formula is just a guide.

Example 3Short Frame Calculation
Given:5'0", Female
תוצאה:Approximately 45 kg (100 lbs)

At exactly 5 feet, the height-based adjustments become zero.

Because the formulas use 5 feet as the base, someone exactly 5 feet tall uses the base constant. For women, this is 45.5kg.

Example 4Tall Frame Calculation
Given:6'4", Male
תוצאה:Approximately 81 kg (179 lbs)

Notice how different formulas give slightly different results for the same person.

Using the Hamwi formula: 48kg + (2.7kg × 16 inches over 5ft) = 91.2kg. Different formulas yield different results, highlighting why a range is better than one number.

Real-World Applications

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Using it as a quick sanity check to see if you're in the general ballpark of medical health standards.

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Helping students understand how medical formulas are built and why they have limitations.

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Giving gym-goers a baseline to compare against as they track their body composition changes over time.

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Assisting in personal health planning when you want a rough target to aim for during a lifestyle change.

Special Cases

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Athletes and Bodybuilders

If you train heavily, your muscle mass will likely put you above these results. In this case, body fat percentage is a much more useful metric than weight.

Older Adults

As we age, our body composition changes naturally. These formulas don't account for the loss of bone density or muscle that can happen with age, so results might feel 'off' for seniors.

Popular Ideal Weight Formulas

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FormulaBest ForNote
DevineDrug dosing baselineMost commonly cited
RobinsonRefining the Devine methodSlightly lower targets
MillerMore conservative estimateLower weight targets

Frequently Asked Questions

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Q

Is IBW just for normal BMI?

A

It's more complex in muscular individuals (high BMI with low body fat) or very obese (goal weight different).

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How should IBW be used clinically?

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Guide, not target; individual factors (muscle mass, genetics) mean exact match isn't needed.

Common Mistakes to Avoid

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  • !Thinking there is one 'perfect' weight you must hit to be healthy.
  • !Ignoring the fact that these formulas were made for drug dosing, not for measuring athletic performance.
  • !Assuming that being outside the suggested range means you are automatically unhealthy.
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Pro Tip

Instead of focusing on the number, try focusing on how you feel—your energy levels, how your clothes fit, and your strength in the gym are much better indicators of health than a formula result.

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Did you know?

Did you know that many of these formulas were actually created to help doctors figure out how much anesthesia to give a patient? They weren't originally intended to define a 'perfect' body, but rather to ensure safety during surgery!

📖Difficulty:Beginner
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Accuracy-checked
Reviewed October 2026
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