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    BMI of 13 — What Does It Mean?

    "BMI Meaning" Calculator
    What does BMI of
    mean

    BMI of 13 — is it good or bad?

    Answer

    BMI 13 for Males and Females means
    Underweight/Severe thinness

    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
    ← 13
    1445
    ↑ BMI

    5.5 below the healthy range (18.5 ≤ BMI < 25)

    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 13 at common heights

    cm · kgft/in · lbs
    150 cm · 29.3 kg
    ≈ 29 kg · BMI 12.89    		4'11" · 64.4 lbs
    155 cm · 31.2 kg5'1" · 68.8 lbs
    160 cm · 33.3 kg
    ≈ 33 kg · BMI 12.89    		5'3" · 73.4 lbs
    165 cm · 35.4 kg
    ≈ 35 kg · BMI 12.86    		5'5" · 78.1 lbs
    170 cm · 37.6 kg
    ≈ 38 kg · BMI 13.15    		5'7" · 83 lbs
    175 cm · 39.8 kg
    ≈ 40 kg · BMI 13.06    		5'9" · 88 lbs
    180 cm · 42.1 kg5'11" · 93.2 lbs
    185 cm · 44.5 kg6'1" · 98.5 lbs
    190 cm · 46.9 kg
    ≈ 47 kg · BMI 13.02    		6'3" · 104 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 13 mean?. BMI of 13 means Underweight/Severe thinness for males and females. Find out if 13 BMI is underweight, normal, overweight, or obese on the WHO scale.
    https://calculat.io/en/weight/what-bmi-mean/13/generated.jpgCopy

    BMI Table

    BMICategory
    10.5Underweight/Severe thinness
    11Underweight/Severe thinness
    11.2Underweight/Severe thinness
    11.4Underweight/Severe thinness
    11.5Underweight/Severe thinness
    11.7Underweight/Severe thinness
    11.8Underweight/Severe thinness
    11.9Underweight/Severe thinness
    12Underweight/Severe thinness
    12.4Underweight/Severe thinness
    12.5Underweight/Severe thinness
    12.6Underweight/Severe thinness
    12.7Underweight/Severe thinness
    12.8Underweight/Severe thinness
    12.9Underweight/Severe thinness
    13Underweight/Severe thinness
    13.1Underweight/Severe thinness
    13.2Underweight/Severe thinness
    13.3Underweight/Severe thinness
    13.4Underweight/Severe thinness
    13.5Underweight/Severe thinness
    13.6Underweight/Severe thinness
    13.7Underweight/Severe thinness
    13.8Underweight/Severe thinness
    13.9Underweight/Severe thinness
    14Underweight/Severe thinness
    14.1Underweight/Severe thinness
    14.2Underweight/Severe thinness
    14.3Underweight/Severe thinness
    14.4Underweight/Severe thinness
    Recalculate with different values ↑

    FAQ

    BMI of 13 — is it good or bad?

    BMI 13 for Males and Females means Underweight/Severe thinness

    Is BMI of 13 dangerous?

    BMI of 13 falls into the "Underweight/Severe thinness" category. A BMI below 18.5 may indicate insufficient body weight. Consult a healthcare professional for personalized advice.

    What weight gives a BMI of 13?

    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 13 means about 82.9 lb (37.6 kg). A taller person reaches the same BMI at a proportionally higher weight.

    Does a BMI of 13 mean the same for men and women?

    Yes — the WHO adult scale has no separate cut-offs by sex, so a BMI of 13 reads as "Underweight/Severe thinness" 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