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    BMI of 21 — What Does It Mean?

    "BMI Meaning" Calculator
    What does BMI of
    mean

    BMI of 21 — is it good or bad?

    Answer

    BMI 21 for Males and Females means
    Normal/Healthy Weight

    WHO adult scale (18+) · not for pregnancy · the same cut-offs for women and men · BMI does not tell muscle from fat

    UnderHealthyOverObese
    18.5
    25
    30
    35
    40
    21
    1445
    ↑ BMI

    WHO BMI categories (adults)

    BMIWeight Category
    BMI < 16Underweight/Severe thinness
    16 ≤ BMI < 17Underweight/Moderate thinness
    17 ≤ BMI < 18.5Underweight/Mild thinness
    18.5 ≤ BMI < 25Normal/Healthy Weight
    25 ≤ BMI < 30Overweight/Pre-obese
    30 ≤ BMI < 35Obese/Class I
    35 ≤ BMI < 40Obese/Class II
    BMI ≥ 40Morbid Obesity/Class III

    Screening, not a diagnosis. Children and teenagers 5–19 are read against WHO BMI-for-age; for many Asian populations WHO names lower action points, 23 and 27.5. Who the BMI scale applies to ↗ · sources: WHO, pregnancy — NHS

    BMI 21 at common heights

    cm · kgft/in · lbs
    150 cm · 47.3 kg
    ≈ 47 kg · BMI 20.89    		4'11" · 104 lbs
    155 cm · 50.5 kg
    ≈ 50 kg · BMI 20.81    		5'1" · 111.2 lbs
    ≈ 111 lbs · BMI 20.97
    160 cm · 53.8 kg
    ≈ 54 kg · BMI 21.09    		5'3" · 118.6 lbs
    ≈ 119 lbs · BMI 21.08
    165 cm · 57.2 kg
    ≈ 57 kg · BMI 20.94    		5'5" · 126.2 lbs
    ≈ 126 lbs · BMI 20.97
    170 cm · 60.7 kg
    ≈ 61 kg · BMI 21.11    		5'7" · 134.1 lbs
    ≈ 134 lbs · BMI 20.99
    175 cm · 64.3 kg
    ≈ 64 kg · BMI 20.9    		5'9" · 142.2 lbs
    ≈ 142 lbs · BMI 20.97
    180 cm · 68 kg5'11" · 150.6 lbs
    185 cm · 71.9 kg
    ≈ 72 kg · BMI 21.04    		6'1" · 159.2 lbs
    190 cm · 75.8 kg
    ≈ 76 kg · BMI 21.05    		6'3" · 168 lbs

    ft/in — nearest inch to the height in cm; the weight is computed for that inch.

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    What does BMI of 21 mean?. BMI of 21 means Normal/Healthy Weight for males and females. Find out if 21 BMI is underweight, normal, overweight, or obese on the WHO scale.
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    BMI Table

    BMICategory
    19.5Normal/Healthy Weight
    19.6Normal/Healthy Weight
    19.7Normal/Healthy Weight
    19.8Normal/Healthy Weight
    19.9Normal/Healthy Weight
    20Normal/Healthy Weight
    20.1Normal/Healthy Weight
    20.2Normal/Healthy Weight
    20.3Normal/Healthy Weight
    20.4Normal/Healthy Weight
    20.5Normal/Healthy Weight
    20.6Normal/Healthy Weight
    20.7Normal/Healthy Weight
    20.8Normal/Healthy Weight
    20.9Normal/Healthy Weight
    21Normal/Healthy Weight
    21.1Normal/Healthy Weight
    21.2Normal/Healthy Weight
    21.3Normal/Healthy Weight
    21.4Normal/Healthy Weight
    21.5Normal/Healthy Weight
    21.6Normal/Healthy Weight
    21.7Normal/Healthy Weight
    21.8Normal/Healthy Weight
    21.9Normal/Healthy Weight
    22Normal/Healthy Weight
    22.1Normal/Healthy Weight
    22.2Normal/Healthy Weight
    22.3Normal/Healthy Weight
    22.4Normal/Healthy Weight
    Recalculate with different values ↑

    FAQ

    BMI of 21 — is it good or bad?

    BMI 21 for Males and Females means Normal/Healthy Weight

    Is BMI of 21 in the healthy range?

    Yes, BMI of 21 falls into the "Normal/Healthy Weight" category. The healthy BMI range is 18.5 ≤ BMI < 25.

    What weight gives a BMI of 21?

    BMI is weight divided by height in metres squared, so it names a weight only once the height is fixed: at 170 cm (5 ft 7 in) a BMI of 21 means about 133.8 lb (60.7 kg). A taller person reaches the same BMI at a proportionally higher weight.

    Does a BMI of 21 mean the same for men and women?

    Yes — the WHO adult scale has no separate cut-offs by sex, so a BMI of 21 reads as "Normal/Healthy Weight" for both. Age is what changes it: the adult table starts at 18, while children and teenagers aged 5–19 are compared with age- and sex-specific reference values instead.

    See Also