Im wondering if there is a lens adapter from cannon lenses to fit nikons?And where i could find them.

thanks in advance

I've only seen manual focus Nikon lens to Canon bodies with a lens adapter. You can find those on BH for around 50 bucks but I've seen other that run for 250 or so. The lens adapter , either which way, would not allow certain functions of the lens.

Depending on your current set up; Stick to one or the other.
If you have one Canon lens sell it and save up for a Nikon lens.