Fitness

Instant, private, and free

Ideal Weight Calculator.

Find your ideal weight based on multiple formulas

On-device calculationNo signup
01

Set your values

Results update as you type.

Six Formulas, One Range

There is no single agreed formula for ideal body weight. This calculator runs six well-known ones and shows the range they produce, adjusted for your frame size.

Frame size adjusts the result by roughly 10% either way.

Your Ideal Weight Range

Recommended range

67.5 - 72.0

kg

Average: 69.4 kg

Results by Formula

Robinson (1983)68.9 kg
Miller (1983)68.7 kg
Hamwi (1964)72.0 kg
Devine (1974)70.5 kg
Broca (1871)67.5 kg
Lorentz (1929)68.8 kg
BMI at ideal weight: 22.7

BMI at ideal weight

22.7
Range span: 4.5 kg

Range span

4.5 kg
Frame adjustment: 0%

Frame adjustment

0%

How to Determine Your Frame Size

  • Wrap your thumb and index finger around your wrist at the narrowest point.
  • If they overlap, you likely have a small frame.
  • If they just touch, you likely have a medium frame.
  • If they do not meet, you likely have a large frame.

Important Notes

  • These formulas were built from population data and predate modern body composition methods.
  • They use height and gender only, so they ignore muscle mass and build.
  • Athletes often sit well above their calculated ideal weight while remaining lean.
  • Treat the range as a rough reference point, not a target to chase.
  • A healthcare professional can suggest a weight range that fits your situation.

Cite this calculator

Canonical URL: https://mathify.one/fr/fitness/ideal-weight

Cite as: Mathify. (2026). Poids Ideal. https://mathify.one/fr/fitness/ideal-weight

Use Cases

Personal Health Assessment

Use the calculator to get a quick reference for a healthy weight range based on your height. It can help you set realistic weight goals or monitor changes over time.

Example: A 5'8" adult can see the range across formulas, e.g., 139-169 lbs.

Fitness and Wellness Planning

Fitness enthusiasts and coaches can use the range as a starting point for weight management discussions, complementing other metrics like BMI or body fat percentage.

Example: A personal trainer might reference the range when setting initial client goals.

Frequently Asked Questions

What is the Ideal Weight Calculator?
The Ideal Weight Calculator estimates a healthy weight range for your height using six established formulas. It provides a reference range to help you understand where your weight falls relative to common medical and fitness standards.
Which formulas does the calculator use?
It uses six established formulas, including Devine, Robinson, Miller, Hamwi, and others. Each formula has its own methodology, so results may vary slightly. The calculator shows the range across all formulas.
Is the ideal weight range a guarantee of health?
No. The ideal weight range is an estimate based on height alone. It does not account for muscle mass, bone density, body composition, or individual health conditions. Always consult a healthcare professional for personalized advice.

Tips & Common Mistakes

Tips

  • Enter your height accurately in the units provided (e.g., feet/inches or cm) to get the most precise estimate.
  • Compare the results from all six formulas to see a broader range rather than focusing on a single number.
  • Use the ideal weight range as a general guide, not a strict target. Combine it with other health indicators like waist circumference and activity level.
  • Recheck your ideal weight range periodically, especially if your height changes (e.g., in adolescents) or for medical monitoring.

Common Mistakes to Avoid

  • Assuming the ideal weight is a single exact number instead of a range. The calculator provides a range across formulas.
  • Using the calculator as a diagnostic tool for health conditions. It is only an estimate and not a substitute for professional medical advice.
  • Misinterpreting the results as a guarantee of health. Factors like muscle mass and body composition are not considered.

Last updated: August 13, 2026