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    BMI of 40 — What Does It Mean?

    "BMI Meaning" Calculator
    What does BMI of
    mean

    BMI of 40 — is it good or bad?

    Answer

    BMI 40 for Males and Females means
    Morbid Obesity/Class III

    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
    40
    1445
    ↑ BMI

    15 above 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 40 at common heights

    cm · kgft/in · lbs
    150 cm · 90 kg4'11" · 198.1 lbs
    155 cm · 96.1 kg5'1" · 211.7 lbs
    160 cm · 102.4 kg5'3" · 225.8 lbs
    165 cm · 108.9 kg
    ≈ 109 kg · BMI 40.04    		5'5" · 240.4 lbs
    170 cm · 115.6 kg
    ≈ 116 kg · BMI 40.14    		5'7" · 255.4 lbs
    175 cm · 122.5 kg
    ≈ 123 kg · BMI 40.16    		5'9" · 270.9 lbs
    180 cm · 129.6 kg
    ≈ 130 kg · BMI 40.12    		5'11" · 286.8 lbs
    185 cm · 136.9 kg
    ≈ 137 kg · BMI 40.03    		6'1" · 303.2 lbs
    190 cm · 144.4 kg6'3" · 320.1 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 40 mean?. BMI of 40 means Morbid Obesity/Class III for males and females. Find out if 40 BMI is underweight, normal, overweight, or obese on the WHO scale.
    https://calculat.io/en/weight/what-bmi-mean/40/generated.jpgCopy

    BMI Table

    BMICategory
    36Obese/Class II
    36.2Obese/Class II
    36.3Obese/Class II
    36.4Obese/Class II
    36.6Obese/Class II
    36.8Obese/Class II
    36.9Obese/Class II
    37Obese/Class II
    37.1Obese/Class II
    38Obese/Class II
    38.1Obese/Class II
    38.5Obese/Class II
    38.9Obese/Class II
    39Obese/Class II
    39.9Obese/Class II
    40Morbid Obesity/Class III
    41Morbid Obesity/Class III
    41.2Morbid Obesity/Class III
    41.3Morbid Obesity/Class III
    41.7Morbid Obesity/Class III
    42Morbid Obesity/Class III
    42.5Morbid Obesity/Class III
    42.7Morbid Obesity/Class III
    42.8Morbid Obesity/Class III
    42.9Morbid Obesity/Class III
    43Morbid Obesity/Class III
    43.1Morbid Obesity/Class III
    43.3Morbid Obesity/Class III
    43.7Morbid Obesity/Class III
    43.8Morbid Obesity/Class III
    Recalculate with different values ↑

    FAQ

    BMI of 40 — is it good or bad?

    BMI 40 for Males and Females means Morbid Obesity/Class III

    Is BMI of 40 dangerous?

    BMI of 40 falls into the "Morbid Obesity/Class III" category. A BMI of 25 or more may indicate excess body weight. Consult a healthcare professional for personalized advice.

    What weight gives a BMI of 40?

    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 40 means about 254.9 lb (115.6 kg). A taller person reaches the same BMI at a proportionally higher weight.

    Does a BMI of 40 mean the same for men and women?

    Yes — the WHO adult scale has no separate cut-offs by sex, so a BMI of 40 reads as "Morbid Obesity/Class III" 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