How long do pencils last?

it all depends

A wooden pencil (or graphite pencil) lasts for as long as you need it to. The purpose really is important relating the lifespan of said pencil; if you were to draw plenty of dark areas or you just need to press harder for specific areas, the pencil will not last as long as one used for drawing a lighter image or sketching.

A pencil's lifespan also depends on the length of said pencil. Understandably, one brand can vary from another, so if you buy a longer length pencil, it should obviously last you a little longer.

The average pencil, dependent on frequent or daily use, should last approximately between a couple of weeks or about two months in retaliation to how frequent you use it.