What is the most accurate formula for ideal body weight?

The Devine formula is the most widely utilized clinical standard in medicine and pharmacology for medication dosing and baseline healthy weight targets.

Ideal Body Weight Calculator

Compare clinical formulas (Devine, Robinson, Miller, Hamwi) & healthy BMI range

Height & Gender

Gender

Male

Female

Age

Height (cm)

Current Weight (kg - Optional for comparison)

Clinical Weight Estimates

Average Ideal Weight (IBW)

70.2 kg

Recommended healthy target: 56.7 - 76.3 kg

Medical Formula	Estimated Ideal Weight
Devine Formula (1974)	70.5 kg
Robinson Formula (1983)	69.7 kg
Miller Formula (1983)	68.9 kg
Hamwi Formula (1964)	71.8 kg
WHO Healthy BMI Range (18.5 - 24.9)	56.7 - 76.3 kg

Clinical Formulas for Ideal Body Weight

The concept of Ideal Body Weight (IBW) originated in clinical medicine to assist physicians in calculating precise drug dosages (such as anesthesia and chemotherapy) where actual total weight could distort pharmacokinetic clearance.

Devine Formula: The most widely used medical benchmark across hospitals worldwide.
Robinson Formula: Developed as an empirical modification of Devine's formula based on updated population actuarial data.
Miller Formula: Designed to provide conservative target weights for shorter and moderate-height demographics.

Frequently Asked Questions

Is Ideal Body Weight the same as healthy weight?

Ideal body weight formulas provide a single mathematical reference point. In reality, a "healthy weight" is a broad range (such as BMI 18.5 to 24.9) that accounts for bone density, frame size, and athletic muscle mass.

How to Use the Ideal Weight Calculator

Select your biological Gender (Male or Female).
Input your exact Height in centimeters or feet and inches.
Click Calculate Ideal Weight to view results across all 4 recognized medical formulas.

Scientific Ideal Body Weight Formulas

Devine Formula (1974):
- Men: 50.0 kg + 2.3 kg × (Height in inches - 60)
- Women: 45.5 kg + 2.3 kg × (Height in inches - 60)

Robinson Formula (1983):
- Men: 52.0 kg + 1.9 kg × (Height in inches - 60)
- Women: 49.0 kg + 1.7 kg × (Height in inches - 60)

Practical Step-by-Step Example

For a 5'10" (70 inches) tall male:

Inches over 5 feet: 70 - 60 = 10 inches.
Devine Formula: 50.0 + (2.3 × 10) = 73.0 kg (160.9 lbs).
Robinson Formula: 52.0 + (1.9 × 10) = 71.0 kg (156.5 lbs).

Ideal Body Weight Calculator

Height & Gender

Clinical Weight Estimates

70.2 kg

Clinical Formulas for Ideal Body Weight

Frequently Asked Questions

How to Use the Ideal Weight Calculator

Scientific Ideal Body Weight Formulas

Practical Step-by-Step Example

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