Ask HN: HTML Files to Wordpress Pages/Posts Dynamically? Automatic?

I have a few hundred HTML files that need to be posted onto a WordPress site, each as separate pages. The website might have a tree category such as: www.mydomain.com/title/category/page-name/sub-page. Creating each page manually will be very time consuming.

It's important I can utilize a SEO tool to optimize the website for search engines.

Is there a solution to convert these files into WordPress posts automatically?

Thanks in advance guys!

Note: I'm relatively new to PHP and programming. If you respond and it sounds a bit technical, please explain it (with links if possible) so we can limit the question-response back and forth.

Other CMS solutions can be considered so long as they meet the requirements above.