I try to keep this as current as possible, but Facebook has an unpleasant routine of making unannounced adjustments then rolling them out slowly to individuals to ensure that not every person gets them at once. If you have actually noticed something that's altered, please let me understand in the comments so I could investigate as well as update as essential.
Facebook Profile Size
Facebook profile Picture Size
The profile Image is the smaller sized, square near the bottom that's to the left of the cover image. It used to overlay the cover picture's bottom left corner, yet in the most recent format, it has actually been transferred to its very own area in the top left of the page.
Your Web page's profile image:
Displays at 170x170 pixels on your Web page on computers, 128x128 pixels on mobile phones and also 36x36 pixels on a lot of function phones
For profile images and cover pictures with your logo design or message, you may get a better result by using a PNG file.
Keep in mind that your Web page's profile photo will be cropped to a circular shape in advertisements and articles, but will stay the very same square form when people see your Web page.
Profile Picture on the Timeline
The profile image that appears beside your name on comments and messages is the same picture but is immediately scaled down to 40px by 40px.