Is range an accurate way to classify ones voice?

Question

I mean wether it's soprano, alto, tenor or bass.

Answer 1

range is the way you can classify yourself as one of the voices, but not the quality obviously.

Answer 2

These ranges are dynamic. I consider myself, and I am considered by others, as a high soprano. However I can sing as low or lower than most altos. I am most comfortable and I sound best as a soprano, so that is where I am classified. So in a sense, no, it is not accurate, because saying someone is a soprano when they can easily sing below the staff isn't quite logical. But if you classify people by their highest level of comfort and best sound, then I would say that vocal ranges are a fairly accurate way of describing voices.