convert html to wordpress in themeforest

HTML Templates in themeforest site Are Allowed To Become A WordPress?

Only with permission from the author and the relevant licenses or agreements

thank’s for you’r attention

How do I know if they let it or not?

I want to convert this product to WordPress and then sell it:

That would never get approved as a WP theme as it is but either way you need to ask the author (use contact form on their profile)