How we estimate a healthy weight
The main result is the weight range that corresponds to a BMI of 18.5 to 24.9 for your height, the range classified as a healthy weight for adults. For context, we also show four older reference formulas that health professionals have used for decades:
| Formula | Males | Females |
|---|---|---|
| Devine (1974) | 50 kg + 2.3 kg per inch over 5 ft | 45.5 kg + 2.3 kg per inch over 5 ft |
| Robinson (1983) | 52 kg + 1.9 kg per inch over 5 ft | 49 kg + 1.7 kg per inch over 5 ft |
| Miller (1983) | 56.2 kg + 1.41 kg per inch over 5 ft | 53.1 kg + 1.36 kg per inch over 5 ft |
| Hamwi (1964) | 106 lb + 6 lb per inch over 5 ft | 100 lb + 5 lb per inch over 5 ft |
What "ideal weight" really means
There isn't a single perfect weight for anyone. These formulas were developed mainly to help with medication dosing, and none of them accounts for muscle mass, frame size, age or body composition. A healthy weight for you is one that supports your health, energy and wellbeing, and it's best discussed with your healthcare provider.
If you're working toward a lower weight, a first goal of 5% to 10% of your current weight can bring meaningful health benefits. Learn more in our healthy weight loss guide, or check your current BMI.
Important
This calculator provides a general estimate for educational purposes only. It isn't a diagnosis or a personalized medical recommendation. Talk with your doctor or a registered dietitian about your individual needs. See our medical disclaimer.