BMI Calculator
Calculate your Body Mass Index from weight and height. Find out your category: underweight, normal, overweight, or obese.
How to Calculate BMI
- Enter your weight in kilograms into the weight field.
- Enter your height in centimeters into the height field.
- Click the Calculate button to get your BMI value.
- Read your BMI result and check which category it falls into: Underweight, Normal, Overweight, or Obese.
快速参考
| 从 | 到 |
|---|---|
| Underweight | BMI < 18.5 |
| Normal | BMI 18.5–24.9 |
| Overweight | BMI 25–29.9 |
| Obese I | BMI 30–34.9 |
| Obese II | BMI 35–39.9 |
| Obese III | BMI ≥ 40 |
使用场景
- •Tracking weight status changes over time as part of a personal health monitoring routine.
- •Screening for potential weight-related health risks during a routine medical check-up.
- •Setting a baseline before starting a diet or exercise program to measure future progress.
公式
Formula: BMI = weight (kg) / height (m)². Where weight is in kilograms and height is in meters.
常见问题
What is BMI?
Body Mass Index (BMI) is a measure calculated from weight and height. It helps determine whether your weight is within a healthy range.
How do you calculate BMI?
Divide your weight in kilograms by the square of your height in meters: BMI = weight / height².
What is a normal BMI?
A normal BMI ranges from 18.5 to 24.9. Values below 18.5 indicate underweight, above 25 indicate overweight.
Is BMI accurate for athletes?
BMI does not account for muscle mass, so athletes with high muscle development may show an elevated reading. Body composition analysis is more appropriate in such cases.