Ideal Weight Calculator

Free ideal weight calculator: calculate your healthy body weight range based on height and gender using the Devine formula. Find your ideal weight for better health.

Ideal body weight (IBW) is an estimate of a healthy weight range for your height. This calculator uses three common formulas (Devine, Robinson, Miller) to give you a range rather than a single number. Note that ideal weight does not account for muscle mass or body composition.

Gender

Height (cm)

Ideal Weight

70.50 kg

68.90–68.70 kg range

Ideal Body Weight is an estimate based on height using three standard formulas. Your BMI and body fat give a more complete picture.

Example

**Example: Ideal Weight for 175cm Man**

• Devine formula: 50 + 2.3 × (175/2.54 − 60) = **~68 kg**
• Robinson formula: 52 + 1.9 × (175/2.54 − 60) = **~70 kg**
• Miller formula: 56.2 + 1.41 × (175/2.54 − 60) = **~66 kg**

Healthy range: **66–71 kg** (approximate)

BMR uses the Mifflin-St Jeor formula. Body fat uses the US Navy circumference method. Ideal weight uses the Devine formula. These are estimates — consult a healthcare professional for personalized advice.

Frequently Asked Questions

What is the most accurate way to measure body fat?

DEXA scans, hydrostatic weighing, and BodPod are the most accurate methods. The US Navy circumference method used here provides a reasonable estimate within 3-4% of these lab methods.

What BMR formula does this calculator use?

We use the Mifflin-St Jeor equation, which is considered the most accurate for the general population. For men: 10xweight(kg) + 6.25xheight(cm) - 5xage(y) + 5. For women: 10xweight + 6.25xheight - 5xage - 161.

What is a healthy BMI range?

A BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese. BMI is a screening tool - it doesn't account for muscle mass or body composition.

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