The Ideal Weight Calculator helps you estimate a healthy body weight based on your height, gender, and age. Using the well-established Devine formula (with metric adjustments), it provides a reference point—not an absolute target. For men, the formula starts at 50 kg for the first 152.4 cm (5 feet) and adds 2.3 kg per extra inch. For women, the baseline is 45.5 kg for 152.4 cm, plus 2.3 kg per additional inch. We then apply a minor age-related fine-tuning (up to middle age) to reflect slight metabolic changes. The result is displayed in kilograms, rounded to one decimal. Remember: ideal weight varies with muscle mass, frame size, and body composition. Athletes often weigh more due to lean mass, while older adults may have different health targets. This tool is for educational use and should not replace professional medical advice. Always consult a healthcare provider for a personalized assessment.
Our calculator uses a hybrid approach: after the core Devine calculation, we incorporate a small adjustment for individuals over 30 (up to 5 kg maximum) to acknowledge gradual shifts in body composition. However, these numbers are statistical averages; individual health depends on many factors like physical activity, bone density, and genetics. We intentionally designed this tool to be simple, private, and responsive – no data leaves your device. The interface adapts perfectly to mobile phones, tablets, and desktops. You can also use it to track changes if you're on a wellness journey. While the Devine formula is decades old, it remains a standard in many clinical settings because of its simplicity and reasonable approximation. For athletes, the "ideal" may be higher due to muscle. For seniors, maintaining a bit of weight might be beneficial. Use this number as a conversation starter with your doctor, not as a strict rule.
We've built this calculator with care, including validation to avoid extreme outputs. If you enter values outside typical ranges, we fallback to safe defaults. The tool also features a modern, accessible interface with high contrast and clear fonts. Whether you're checking your own stats or helping a family member, the Ideal Weight Calculator delivers instant, reliable estimates. It's part of the MultiCalculators family—a suite of free utilities for everyday math and health questions. No signups, no hidden data collection. For feedback or feature requests, please visit our Contact Us page. We hope this tool supports your wellness goals. Stay healthy, stay informed, and remember that a number on a scale is just one piece of your well-being. Always pair it with how you feel, your energy levels, and medical advice. Now, enter your height and see your estimated ideal weight range.