Body Mass Index (BMI)
BMI estimates body fat based on weight relative to height (kg/m²) and is widely used to classify weight status and assess health risk. Being overweight or obese increases the risk of developing chronic diseases.
- Normal weight (18.5–24.9) — Lower risk.
- Overweight (25.0–29.9) — Elevated risk.
- Obese (≥ 30.0) — Higher risk.
Note: BMI does not directly measure body fat and may not accurately reflect health status in all individuals, including athletes, older adults, or those with high muscle mass. Clinical judgment should be applied when interpreting results.
Ideal Body Weight (IBW)
Ideal body weight is estimated using the Devine Formula (Devine, 1974), a widely referenced clinical standard used in pharmacokinetic dosing, respiratory therapy, and nutritional assessment.
Male: IBW = 50 kg + 2.3 kg for each inch over 5 feet
Female: IBW = 45.5 kg + 2.3 kg for each inch over 5 feet
Weight Loss Goals & Rate
An initial goal of 5–10% of baseline body weight is associated with meaningful improvements in blood pressure, blood sugar, and cholesterol levels.
A rate of 1–2 lb per week is considered safe and sustainable for most adults.
This tool is intended for informational purposes only and does not constitute medical advice. Individuals seeking weight management support should consult a qualified healthcare provider.