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Ideal Weight Calculator

Calculate ideal body weight using four established formulas (Devine, Robinson, Miller, Hamwi).

About this calculator

The Ideal Weight Calculator on NumberCals is a free, mobile-friendly tool for anyone needing to calculate ideal body weight using four established formulas (devine, robinson, miller, hamwi). Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.

Formula used

Multiple — see output for each formula's result.

What you'll need

  • Height (cm) (e.g. 175)
  • Sex

What you'll get

  • Devine Formula (kg)
  • Robinson Formula (kg)
  • Miller Formula (kg)
  • Hamwi Formula (kg)
Formula
Multiple — see output for each formula's result.

Frequently Asked Questions

Which formula should I use? +

There's no single 'correct' formula — use the average across the four as a reasonable target range.

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