BMI Prime Calculator
Enter your height and weight to get your BMI Prime ratio and precise weight-status classification, from severely underweight to super obese.
Your Measurements
Enter your measurements and press Calculate.
BMI Prime
= BMI ÷ 25
BMI
0.00
0.74
1.00
1.40
1.80+
Healthy Range
BMI Prime Range
0.74 – 1.00
Normal weight
Deviation
from BMI Prime 1.00
BMI Prime Classification Table
| Category | BMI Prime | BMI | Your Status |
|---|
Summary
Enter your height and weight to get your BMI Prime ratio and precise weight-status classification, from severely underweight to super obese.
How it works
- Enter your height and weight in metric (cm / kg) or imperial (ft·in / lb) units.
- The tool converts your measurements to metric and computes BMI = weight (kg) ÷ height (m)².
- BMI Prime is then calculated as BMI ÷ 25.
- Your result is matched against the eight standard BMI Prime classification bands.
- A color-coded scale shows exactly where your BMI Prime falls.
- Healthy BMI Prime range (0.74 – 1.00) and your corresponding healthy weight range are displayed.
Use cases
- Quickly gauge how far your weight is from the healthy upper limit.
- Compare BMI Prime across individuals of different heights without rescaling.
- Track progress toward or away from the healthy weight range over time.
- Use as a single normalised number when reporting weight status in research or health apps.
- Understand nuanced weight categories beyond the standard four WHO BMI bands.
- Estimate the healthy weight target range for your height.
Frequently Asked Questions
Last updated: 2026-06-09 ·
Reviewed by Nham Vu