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Ideal Weight Calculator.
Find your ideal weight based on multiple formulas
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
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/en/fitness/ideal-weight
Cite as: Mathify. (2026). Ideal Weight Calculator. https://mathify.one/en/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