Changing your e-mail is usually not a big deal, however when it comes to Facebook, it's a bit more complicated since your e-mail address is also your Facebook login mail ID. You can change your login mail ID on Facebook by browsing to the Facebook settings page and confirming your brand-new email address.
How To Change Email For Facebook
1. Search to Facebook.com and log in to your Facebook account
2. Click the "Account" button on top right corner of the screen. Click "Account Settings."
3. Scroll down to your e-mail address and click the "Edit" icon.
4. Click "Add another e-mail."
5. Enter your new email address into the "Email" field and click "Save Changes."
6. Input your Facebook password when prompted to validate the changes.
7. Visit to your e-mail account and open the verification message from Facebook. Click the "Validate" button within the message.
8. Click "Account," then "Account Settings." Click "Edit" next to "Email." Click the "Remove" button for your old email address to finish the process of altering your login mail ID on Facebook.
And one more thing please don’t forget to share this awesome trick to use the How To Change Email For Facebook with your friends.