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Ideal Body Weight Calculator

cm

Estimated IBW

70.5 kg

Low Range

63.4 kg

High Range

77.5 kg

IBW is a simple height-based reference point. Use the range as a rough context, not a strict target—muscle mass, age, and body composition can shift what’s healthy for you.

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After you get your result, compare a few scenarios or explore related tools.

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How it works

Ideal body weight (IBW) formulas estimate a reference weight from height (and typically sex). These formulas are commonly used in clinical contexts as a quick baseline, but they don’t capture individual differences like muscle mass, bone density, or body fat percentage.

  1. Enter your height and sex.
  2. The calculator estimates an ideal weight point and a small range.
  3. Use it as a quick reference for planning.

How to interpret your result

The IBW point estimate is a reference, not a requirement. The small range is a simple way to acknowledge that “healthy” can vary around the estimate.

  • If you have high lean mass, a healthy weight may be higher than IBW.
  • If you’re using IBW for fitness goals, pair it with waist measurements or body fat tracking.

Common mistakes

  • Treating IBW as a strict target instead of a reference point.
  • Ignoring body composition (muscle vs fat) when setting goals.
  • Comparing IBW across formulas (different formulas can disagree).
  • Forgetting to convert kg to lbs if you plan in pounds.

Comparison table

ToolUsesBest for
IBWHeight + sexSingle reference point
BMI rangeHeight + weightBroad screening range
Body fat %Measurements / devicesComposition and trend tracking

Example

175 cm may produce an IBW estimate around the mid-60s to low-70s kg depending on sex.

FAQ

IBW is an estimate based on height and sex. It’s often used as a reference point, not a strict target.

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