How long should it take to regain hearing after having a ruptured eardrum?

4 to 6 weeks: If the only reason you lost hearing is because of the hole in your eardrum, it will take 4 to 6 weeks in most cases for the hole to close on its own. If other damage occurred to your ear besides the eardrum then obviously closing the hole won't make all the difference. Hopefully you have seen an ENT doctor and have had an evaluation.