http to https free
It is advantage to make http to https to add more visitor and search engine crawl.
non secure web site to secure web site free
Here are few free plans to make http to https
1. use https://www.sslforfree.com/
This is completely free , only certificate expires in every three months.
two files to be upload from sslforfree to your web site and then downlod ssl certificate free
Then install in your hosting web server
2. use cloudflare free account
https://www.cloudflare.com/
with free account , ssl is free , if your are using email , please follow extra instruction in cloudflare.