Ideal Body Weight Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter details
Result
Fill in the fields to see your result.
Estimate only — not medical or nutritional advice. Individual needs vary; consult a professional before making big changes.
How to use this calculator
- Enter sex and height.
- Pick a formula (Devine, Robinson, Miller or Hamwi).
- Read the ideal weight plus the healthy BMI range.
How it works
Classic IBW formulas add a per-inch amount above 5 ft to a base weight. The healthy range uses BMI 18.5–24.9 for your height.
Worked example
Man, 180 cm, Devine. ≈ 75 kg; healthy BMI range ≈ 60–81 kg.
Tips
- Estimate only — not medical or nutritional advice. Individual needs vary.
Frequently asked questions
Which formula is best?
They're all rough guides from different eras. The BMI healthy range is often more practical.
Privacy?
Runs entirely in your browser. Your inputs are not saved or transmitted.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.