These WordPress plugins help you import and export your WordPress users.
WP All Import
Folks who work with WooCommerce all of the time swear by WP All Import for migrating data. It’s also great for migrating non-WooCommerce data as well, whether between sites or from a CSV file.
Export Users for WordPress
Really solid plugin for exporting users along with metadata (even custom fields) by the makers of Oxygen and Breakdance. Includes the ability to filter and even combine fields. You can even make changes to the file and import it back into WordPress. Works with individual child sites of a Multisite network, but not on the entire user database at once.
Import Users from CSV
This plugin works great for importing members in a CSV file. Works great with Ultimate Member.
Import Export WordPress Users & WooCommerce Customers
This is another really great plugin for importing or exporting users. Output CSV columns can be configured to whatever your target platform requires. Works with individual child sites of a Multisite network, but not on the entire user database at once.
Please leave a question or comment below! – Brian

I am a freelance web developer and consultant based in Santa Monica, CA who uses WordPress, PHP, and JavaScript to create websites and web applications for businesses, nonprofits, and organizations. I have a degree in Electrical Engineering (BSEE) from California Institute of Technology and a degree in Engineering Management (MSEM) from Stanford University.
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