Force https in htaccess
===

I got a certificate for my site and now I need to move it to https. This is my htaccess:

    # Turn on URL rewriting
    RewriteEngine On
 
    # Installation directory
    RewriteBase /

    # Protect hidden files from being viewed
    <Files .*>
    	Order Deny,Allow
    	Deny From All
    </Files>

    # Protect application and system files from being viewed
    RewriteRule ^(?:application|modules|system)\b.* index.php/$0 [L]
    
    # Allow any files or directories that exist to be displayed directly
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d

    # Rewrite all other URLs to index.php/URL
    RewriteRule .* index.php/$0 [PT]

How do I do it? Thanks