basic

Ideal Weight from Height and Frame Size Calculator

Lorentz: IBW = H−100 − (H−150)/K (K=4 male, 2.5 female).

Calculates ideal body weight using the Lorentz formula adjusted for sex. A positive or negative deviation shows how far actual weight is from the ideal range.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Male: IBW = H−100−(H−150)/4; Female: IBW = H−100−(H−150)/2.5 (H in cm)

In depth

Calculates ideal body weight using the Lorentz formula adjusted for sex. A positive or negative deviation shows how far actual weight is from the ideal range.