I’ve given examples for both “www” and also “without www”. I gave neutral code that works with any site. If you want, you could also replace “%{HTTP_HOST}%” with your domain name. I only have rewrites for Apache htaccess right now. (NGINX servers can try this.)

Add this code above the #BEGIN WordPress line in your htaccess. 

Method #1

This one uses less code but has more redirects when you use page tools. It works well but is perhaps slightly less efficient than the second. (I recommend this method for everyone using Swift Performance plugin.)

WITHOUT www (all visits go to “https://domain.com”):

#301 https redirects to without WWW
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

WITH www (all visits go to “https://www.domain.com”):

#301 https redirects to with WWW
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

Method #2

My new favorite method, thanks to Nazar Hotsa who’s researched every method and shared this with me. Awesome community guy with tons of enterprise webhosting experience.

WITHOUT www (all visits go to “https://domain.com”):

# BEGIN Redirects
RewriteEngine On
# 301 redirect www to non-www
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
# 301 redirect to https
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
# END Redirects

WITH www (all visits go to “https://www.domain.com”):

# BEGIN Redirects
RewriteEngine On
# 301 redirect to www
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
# 301 redirect to https
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
# END Redirects

Other ways to redirect?

Some people complained my examples used too many redirects. In that case, you’re welcome to research on your own and try other methods of redirection.

Read below and see which one you like best (beware, they all have their implications):