输入身高体重立刻算出 BMI，并同时按 WHO 国际标准和中国标准给出分类（两者的超重线不同：中国 24、国际 25），还附上你身高对应的健康体重范围。Enter height and weight for an instant BMI, classified under both WHO and Chinese cut-offs (their overweight lines differ: 24 vs 25), plus the healthy weight range for your height.
BMI 是粗筛指标，不区分肌肉和脂肪：健身人群肌肉多，BMI 偏高不一定代表胖；老年人则可能 BMI 正常但肌肉不足。真要评估体型，结合腰围和体脂率一起看更靠谱。本工具结果仅供参考，不构成医疗建议。BMI is a rough screening number that cannot tell muscle from fat: muscular people read high without being overweight, and older adults can read normal while under-muscled. For a real picture, combine it with waist size and body-fat percentage. For reference only — not medical advice.