BMI, or body mass index, compares body weight with height. It is useful because the formula is simple and the result is easy to compare across broad population ranges.
The limitation is that BMI does not directly measure muscle mass, body fat percentage, age-related changes, or individual medical context. It is best treated as a screening number rather than a diagnosis.
For calcoralab, BMI remains a formula-only calculator. The result comes from weight divided by height in meters squared, with no AI involved in the calculation.