Rewrite all to https with htaccess and Magento - apache

Question

We want to redirect every page in Magento to https. We know how to change this in Magento, but we do not know how to do this in our current htaccess? For more information, please see our current htaccess file below, stripped from unnecessary comments.
Current htaccess:
RewriteEngine on
Options +FollowSymLinks
RewriteBase /
DirectoryIndex index.php
RewriteCond %{HTTP_USER_AGENT} libwww-perl.*
RewriteRule .* – [F,L]
RewriteCond %{THE_REQUEST} \s+/index\.php [NC]
RewriteRule ^(.*?)index\.php$ /$1? [L,R=301,NC,NE]
RewriteRule ^api/rest api.php?type=rest [QSA,L]
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteCond %{REQUEST_METHOD} ^TRAC[EK]
RewriteRule .* - [L,R=405]
RewriteCond %{REQUEST_URI} !^/(media|skin|js)/
RewriteRule ^home/?$ /? [R=301,L,NC]
# ADD WWW TO NONE WWW FOR BOTH HTTPS AND NONE HTTPS
RewriteCond %{HTTP_HOST} !^$
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
#REDIRECT ALL .HTML FILES AND ALL .HTML/ FILES WITH TRAILING SLASH
RewriteRule ^google[0-9a-f]+.html$ - [L]
RewriteRule (.+)\.html$ /$1/ [L,R=301]
RewriteRule (.+)\.html\/$ /$1/ [L,R=301]
# ADD TRAILING SLASH
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
# TRAILING SLASH CHECK
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)$ $1/ [L,R=301]
#CHECK IF REDIRECT POINTS TO A VALID FILE
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
#REWRITE EVERYTHING ELSE TO INDEX.PHP
RewriteRule .* index.php [L]
Solved by adding:
RewriteCond %{HTTPS} !=on
RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R=301,L]

Answer 1

Add the below code
RewriteEngine on
after
RewriteCond %{HTTPS} on
RewriteRule ^$ https://%{HTTP_HOST} [L,R]
And goto admin>SYStem>configuration>General>Web>
change all secure url and unsecure to https:
ex: