OomTools

Ideal Body Weight Calculator

See a healthy weight range for your height from the standard BMI range, shown next to the classic Devine, Robinson, Miller and Hamwi formulas so you can compare them. It's a general informational estimate, not medical advice, and it keeps none of your inputs.

  • 100% free
  • Private & safe
  • Runs in your browser
Read our complete guide: TDEE vs BMR: How to Calculate Your Daily Calorie Deficit for Weight Loss

Why use Ideal Weight Calculator?

Ideal Weight Calculator gives a quick, private estimate using well-established formulas — informational only, and nothing you enter is stored.

  • Runs instantly in your browser — nothing to install, nothing uploaded.
  • Completely free, with no account, no watermarks and no usage limits.
  • Handles Healthy range from BMI 18.5–24.9 for your height; Devine, Robinson, Miller and Hamwi formulas.
  • Choose metric or US units and your sex.
  • Works on any device — desktop, tablet and phone — and is fully keyboard accessible.

How to use Ideal Weight Calculator

  1. Choose metric or US units and your sex.
  2. Enter your height.
  3. See the healthy-weight range for your height.
  4. Compare estimates from four common formulas.

Examples

  • A healthy-weight range for someone 175 cm tall.
  • Comparing formula estimates for the same height.

Supported formats & limits

  • Healthy range from BMI 18.5–24.9 for your height
  • Devine, Robinson, Miller and Hamwi formulas

Limitations

  • Population estimates that do not account for build, muscle or body composition.
  • Not medical advice — consult a professional for personal guidance.
  • May not suit athletes, children, pregnancy or older adults.

Frequently asked questions

Which is the 'right' number?

There is no single ideal weight; the healthy BMI range and the formulas give a sensible band, not a target.

Is this medical advice?

No — it is a general informational estimate only.

Are my inputs stored?

No — everything is calculated in your browser and nothing is saved.

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