Need help switching my wordpress site from http to https

Hi there, I need somebody who has experience in this to switch my Wordpress site from http to https. I do have a ssl installed. I could probably do it myself but I am not sure about a few things and think it would be better to have somebody with experience do it for me. The website is fairly new without much traffic at this time, but there are numerous plugins, google fonts and images as well as woocommerce products that would need to be addressed. A backup would have to be made first and a guarantee that the site would run exactly the same way afterwards.