Pt
PowerUtils
2026-06-11•2 分钟阅读

如何在线计算 BMI - 身体质量指数指南

学习如何使用 PowerUtils 免费在线 BMI 计算器计算身体质量指数。了解 WHO 分类标准并保持健康体重。

bmihealthcalculatorfitnesstutorial

What is BMI?



BMI (Body Mass Index) is a simple calculation using your height and weight to determine if you're at a healthy weight. It's widely used by healthcare professionals worldwide.

BMI Formula



``
BMI = weight (kg) / height² (m²)
`

Or in imperial units:
`
BMI = 703 × weight (lbs) / height² (in²)
``

WHO BMI Categories



| Category | BMI Range |
|----------|-----------|
| Underweight | Below 18.5 |
| Normal weight | 18.5 - 24.9 |
| Overweight | 25.0 - 29.9 |
| Obese Class I | 30.0 - 34.9 |
| Obese Class II | 35.0 - 39.9 |
| Obese Class III | 40.0 and above |

How to Use the BMI Calculator



Step 1: Enter Your Details



Go to the BMI Calculator and input:
  • Height: In centimeters or feet/inches

  • Weight: In kilograms or pounds


    • Step 2: Calculate



    Click calculate to get your BMI score and classification.

    Step 3: Review Results



    The calculator shows:
  • Your BMI number

  • Weight category

  • Healthy weight range for your height


    • Limitations of BMI



    BMI is a useful screening tool but doesn't account for:
  • Muscle mass (athletes may have higher BMI)

  • Bone density

  • Body composition

  • Age and gender differences


    • Tips for Healthy Weight



  • Balanced Diet: Eat plenty of fruits, vegetables, and whole grains

  • Regular Exercise: At least 150 minutes of moderate activity per week

  • Stay Hydrated: Drink 8 glasses of water daily

  • Sleep Well: Aim for 7-9 hours of quality sleep

  • Monitor Progress: Check your BMI monthly


    • Related Tools



  • Age Calculator - Calculate precise age

  • Unit Converter - Convert weight and height units

  • Percentage Calculator - Calculate weight loss percentages


    • Related Articles



  • Use Age Calculator.Md

  • Calculate Percentages

  • Check Ip Address

    • 返回博客