Username Generator
Generate username ideas and check if they're free on every platform.
Finding a good username is easy. Finding one that isn't already taken is the hard part. This free username generator writes ten ideas from a short description of you or your brand, then lets you check any of them across the major social networks without leaving the page.
Choose the platform you care about most and the ideas are written to fit it: short, easy to spell, and using only letters, numbers, underscores and periods so they work almost everywhere. Tap Check availability on the ones you like and you'll see a status for each network with a link to the profile URL. Already have a name in mind? The username checker looks up any handle directly.
The AI part is free with no signup, with a few generations a day for anonymous visitors. Once your handles are claimed, PostJay lets you schedule posts to all of them, and 18 platforms in total, from one calendar. Want ideas tuned to one network? Try the Instagram, TikTok or YouTube versions.
Frequently asked questions
How is this different from other username generators?
Most generators stop at a list of ideas, and you find out they're taken one by one. Here every idea has a Check availability button that looks the name up on Instagram, TikTok, X, YouTube, Pinterest, Threads and Facebook at once, with a link to each profile so you can see what's already there.
How accurate is the availability check?
It's best-effort. We request the public profile URL on each platform and read the response. Platforms often block or rate-limit automated requests, so some results come back as Unknown, and a name that looks free can still be reserved or banned. Always confirm on the platform before you announce a new handle.
Why is there a limit on checks?
Each check sends requests to several platforms, so it's capped at 10 per day per visitor to keep the tool working for everyone. That's why names aren't all checked automatically: pick your favourites and check those.
Should I use the same username on every platform?
If you can, yes. One handle everywhere makes you easier to find, tag and recommend. If your first choice is taken somewhere, a small consistent variation (adding an underscore, a period or a short word like 'hq') usually works better than a completely different name.
Related free tools
Instagram Username Generator
Generate Instagram username ideas and check which are available.
TikTok Username Generator
Generate TikTok username ideas and check which are available.
AI Caption Generator
Generate scroll-stopping captions for any platform in seconds.
Hashtag Generator
Get relevant, high-reach hashtags tailored to your topic and platform.
Now schedule it with PostJay
Plan, schedule, and auto-publish to every platform from one calendar. Try it free today.
Get started free