Which formula is used?

Both Robinson (1983) and Devine (1974) classical ideal-body-weight formulas are shown with different constants. Robinson is commonly cited in clinical contexts; Devine is widely used for drug dosing references.

IBW vs BMI healthy range?

BMI healthy weight (18.5–24.9) is often a wider band than classical IBW formulas. We show both perspectives so you can compare a formula-based target with a BMI-derived range for your height.

What about frame size?

Optionally adjust for small, medium, or large frame. Small frame subtracts 10% and large frame adds 10% from classical formula results. Frame size is a rough modifier, not a medical prescription.

Is this medical advice?

No. These are population reference ranges, not personal prescriptions. Muscle mass, age, and health conditions affect healthy weight. Consult a healthcare provider for individualized targets.