There are many reasons to change a web hosting provider, one reason is your hosting service is not as good as you expected or maybe your website is very popular and you need more bandwidth and other facilities but your website hosting provider is not able to meet your needs.

To find a good web host, the best way is to go to web hosting review sites and find the most recommended hosting service with enough disk space and bandwidth. After finding your new host, you need to make a backup of your existing site.

Then you need to upload your site to your new web hosting provider. Wait for 48 hours in order your site get listed in domain name servers. During these 48 hours you need to use a redirect script in your old site to send traffic to your new site.