How many legs do butterflies have?

Like all insects, butterflies have six legs.
Six (6) is the number of legs that a butterfly (Lepidoptera order) has - or 3 pairs.

Specifically, butterflies belong to the insect class. One of the basic insect characteristics is the possession of six legs, which are attached to the thorax of the insect.

The two "legs" around the head are actually antennae.
Butterflies have 6 legs (3 pairs).
6 legs or 3 pairs