Calculate your ideal body weight using multiple commonly referenced formulas.
Use the calculator to estimate a health or fitness number, then compare it with trends over time and other relevant context.
These tools are for education and planning. They do not replace medical advice.
Ideal body weight is an estimate of a healthy weight for your height based on population studies. It is used in medical settings for dosing medications and assessing health risks. However, it does not account for muscle mass, bone density, or body composition.
All four formulas (Devine, Robinson, Miller, Hamwi) are widely used and produce similar results. Devine (1974) is most common in medical settings. No single formula is definitively "best" as ideal weight varies by individual factors like muscle mass and frame size.
Each formula was developed from different population studies and uses slightly different calculations. The differences are usually small (within a few kg/lbs). Use the range as a general guide rather than a strict target.
Ideal weight formulas provide a general target, but your optimal weight depends on many factors including muscle mass, bone density, age, and overall health. Focus on a healthy lifestyle rather than a specific number. Consult a healthcare provider for personalized advice.
Last updated: May 27, 2026 | Reviewed by Body Tally Team
Use the ideal weight calculator to compare common formula-based weight estimates. These formulas can provide a rough reference point, but a healthy weight is personal and depends on body composition, health markers, age, sex, history, and goals.
Body Tally keeps the calculator near the top of the page and adds this guide so you can understand what the tool does, how the inputs affect the result, and what the result can and cannot tell you. Health and fitness formulas are useful for planning, but they work best when treated as estimates and compared with real trends, symptoms, training history, and professional guidance when appropriate.
Ideal weight formulas usually estimate a reference weight from height and sometimes sex. They do not measure body composition or individual health.
The formulas use simplified inputs so they can be calculated quickly in a browser. They do not know your medical history, medications, hormones, lab results, training recovery, sleep, stress, or diagnosis. Use the answer as a starting point, then refine it with consistent measurements and qualified advice when the decision affects health.
Calculator results are useful for learning and planning, but they should not be the only basis for decisions when symptoms, medications, chronic conditions, pregnancy, eating disorder history, injury, or major changes in activity are involved.
If the estimate feels surprising, repeat the measurement, check your unit settings, compare one related calculator, and read the matching guide before acting on the number. Body Tally is built to help you ask better questions, not to replace qualified care.
No. It is a formula estimate.
Not necessarily. Healthy ranges vary by person.
Yes. Higher lean mass can raise body weight.