With more than 800 million active users, Instagram is one of the most widely used social media platforms around. To ensures users are getting the most out of their experience, the site changes the dimensional requirements for profile pictures on a regular basis.
At present time, profile pictures display as 110 x 110 pixel images on the mobile app. On desktop devices, profile images will appear a bit larger, which is why uploading an image that is 180 x 180 pixels is recommended. Doing so will ensure that your image maintains the highest quality on both mobile and desktop devices.