Hi. I can download free psd and convert to html and sale in themeforest ? excuse me for my bad english
If you have permission for the free template author, yes you can. You should ask license + permission the PSD author.
Almost certainly the license will say this is not allowed PLUS my guess is that 95% of ‘Free files” (PSD or otherwise) are not going to be good enough for here without some pretty substantial additions and editing