Find Your Ideal Weight
Discover your perfect weight in seconds. Many calculators rely only on one formula (e.g. Devine). But our Calculator, Calculates your ideal weight using five gold‑standard medical formulas (Peterson, Miller, Robinson, Devine, Hamwi). Compares this ideal average to your current weight—so you know exactly how much weight to gain or lose. Displays a clear, easy-to-understand health suggestion, helping you take the right next step.
Perfect Weight Calculator
Male
Female
Metric (cm)
Imperial (ft/in)
Your ideal weight according to:
🔁 Recalculate your Weight
How It Works
The Science
What is Ideal Weight?
FAQ
- Step 1: Select your Gender (Male or Female) as body composition varies biologically.
- Step 2:Enter your Age. (Ideal weight ranges can shift slightly as we age).
- Step 3:Choose your preferred unit (Metric for kg/cm or Imperial for lb/ft).
- Step 4:Input your Height and Current Weight
- Step 5:Click ‘Calculate’ to see your ideal weight range based on multiple medical formulas, plus a health suggestion compared to your current weight.
- Devine Formula (Most Used): The standard for medical dosages.
- Male: 0 kg + 2.3 kg per inch over 5 ft.
- Female: 5 kg + 2.3 kg per inch over 5 ft.
- Hamwi Formula (1964): Designed for medicinal dosage purposes.
- Male:0 kg + 2.7 kg per inch over 5 ft.
- Female:5 kg + 2.2 kg per inch over 5 ft.
- Robinson & Miller Formulas: Alternative methods developed in 1983 to refine accuracy for different body types.
- WHO BMI Standard: We also cross-check with the World Health Organization’s healthy BMI range (18.5 – 25) for a complete health picture.
- Not About Looks: Ideal Body Weight (IBW) was originally developed for medical use (calculating drug dosages), not to define beauty standards seen on social media.
- A Health Guide: It provides a target weight range to minimize health risks like heart disease or diabetes.
- Limitations: IBW is an estimate. It does not account for muscle mass (athletes may weigh more) or bone density. Always consult a doctor for a personalized assessment.
- While knowing your ideal weight is helpful, understanding your Body Mass Index (BMI) gives a broader picture of your health category. Check our free [BMI Calculator] to see where you stand.
- Q: Does this calculator apply to children?
- A: No, these formulas are for adults (18+). For children, we recommend using the CDC’s percentile growth charts.
- Q: Why do I get different results from different formulas?
- A: Each formula (Devine, Robinson, etc.) was developed based on different population data. We show you all of them so you can see the average range.
- Q: Is BMI the same as Ideal Weight?
- A: No. BMI is a simple ratio of weight to height, while Ideal Weight formulas give you a specific target weight in kilograms or pounds.
- Q: Can I use this if I am pregnant?
- A: No, pregnancy weight gain is different. If you are expecting, please use our specialized [Pregnancy Journey Tracker] to monitor healthy weight gain for you and your baby.