Ideal Weight Calculator
Calculate your ideal weight using 5 proven scientific formulas. Get a comprehensive weight range and personalized recommendations.
🎯 Healthy Weight Range (BMI 18.5 – 24.9)
💡 Personalized Recommendations
More Free Calculators
Understanding Ideal Weight
Ideal weight varies based on height, gender, age, and body composition. Using multiple formulas together gives a more realistic and complete picture.
📊 Multiple Formulas
We use five established formulas (Robinson, Miller, Devine, Hamwi, and BMI-based) to give you a comprehensive range rather than a single potentially misleading number.
⚖️ Individual Variation
Ideal weight is highly personal. Muscle mass, bone density, and body composition significantly affect your optimal weight — formulas are a guide, not a verdict.
🎯 Realistic Goals
Sustainable rates: 0.5–1 kg/week for loss, 0.25–0.5 kg/week for gain. Faster rates tend to be counterproductive and harder to maintain long-term.
🏥 Medical Consultation
For significant weight changes or existing health conditions, consult a healthcare professional who can assess your complete health profile and guide you safely.
Frequently Asked Questions
How is ideal weight calculated?
Several established scientific formulas exist for calculating ideal weight. The Devine formula (1974), Robinson formula (1983), Miller formula (1983), and Hamwi formula (1964) each use height and gender as primary inputs. A fifth approach uses the BMI midpoint of 21.5 to calculate an ideal weight for a given height. Our calculator shows results from all five formulas and their average, giving you a balanced range rather than a single potentially misleading number.
Is there one perfect weight for my height?
No single ideal weight exists for any given height. Healthy weight depends on multiple individual factors including muscle mass, bone density, age, sex, and overall body composition. Two people of the same height can have very different healthy weights. This is why our calculator provides a range from multiple formulas rather than one number. Think of ideal weight as a zone — not a precise target — and focus on overall health markers rather than a single number on the scale.
What is a healthy weight for my height?
A healthy weight generally corresponds to a BMI between 18.5 and 24.9, according to WHO guidelines. For example, a person who is 170 cm tall would have a healthy weight range of approximately 53 to 72 kg. However, individual factors like muscle mass can significantly shift this range — a muscular person may weigh more than the upper limit and still be in excellent health. Use BMI-based ranges as a starting point and consider body composition for a fuller picture.
How often should I check my weight?
Weekly weighing at the same time — ideally in the morning, after using the bathroom, and before eating — provides the most consistent and useful data. Daily weight fluctuations of 1 to 2 kg are completely normal and are caused by water retention, food intake, and hormonal changes. Weighing daily can cause unnecessary stress over normal variations. If you track weekly, look at the trend over 4 or more weeks rather than any single reading.