A broad weight range
National Geographic's Asian elephant profile gives a broad weight range of about 2.25 to 5.5 tons. The range covers animals of different ages and body sizes; it is not the expected weight of every elephant.
Adult males are generally larger than adult females, while calves weigh much less than adults. Individual measurements vary, and a visual estimate is not a reliable way to determine an elephant's weight.
Why weight estimates vary
Age, sex, height, body condition and the way a measurement is taken can all affect a reported figure. Sources may also use different units, so check the unit and the population being described before comparing numbers.
For a specific elephant, rely on measurements from qualified caretakers or veterinarians. General species facts should not be used to assess an individual animal's health.