Username Checker.
Check a name against the rules of 32 platforms, then open each profile in one tap. Free, no sign-up.
Domain extensions
Each extension is checked against the public registry lookup. "Likely free" means no registration was found when we checked. Confirm with a registrar before you buy, because reserved, premium and expiring names can look different.
How to use the username checker
- Type the name you want, without the @ sign.
- Check the rule badge on each platform. Green means the name fits the listed limits.
- Press "Open profile page" to see the platform. A not-found page usually means the name is free.
- If it is taken, try a variant, then sign up quickly on the platforms that matter most to you.
Platforms change their rules and their sign-up checks without notice. Confirm the name on the platform before you rely on it.
What is a username checker?
A username checker shows you whether the name you want is free across the social, business and developer platforms you are likely to use. Instead of opening each site one by one, you enter the name once and see the rules and profile links for every platform in one place. This checker also tests the name against each platform's length and character rules, so you can rule out names that cannot be used before you try to sign up.
Why a consistent username matters
People look for you by name. If your handle is the same on every platform, followers, clients and collaborators can find you without guessing. A consistent name also makes it harder for someone to impersonate your brand with a near-identical account.
How to choose a username
- Keep it short and easy to spell, and say it out loud to check.
- Avoid numbers and symbols where a plain word works.
- Match it to your brand or your name.
- Check the platforms you will use first, then the rest.
- Keep the same name across platforms wherever you can.
What to do if your username is taken
Try a short variant rather than a much longer name. Adding an underscore, a word such as official or studio, or a short prefix keeps the base name recognisable. If the taken profile looks inactive, you can contact its owner politely, but do not assume it has been abandoned.
Common mistakes to avoid
- Choosing a name that breaks a platform's rules, and finding out only at sign-up.
- Checking one platform and assuming the rest are free.
- Mixing up look-alike characters, such as 0 and O, or l and 1.
- Forgetting the domain name, which matters for a website or email address.
- Picking a name that will not suit you if your work changes.
Platform rules at a glance
Most platforms allow letters, numbers, underscores and sometimes periods or hyphens. Length limits differ a lot. For example, X allows 4 to 15 characters, Instagram up to 30 and GitHub up to 39. The badges above show the rules we have confirmed. For any platform marked "Check site", check its sign-up page.
Handles and domain names together
A matching domain name helps people find your website from the same name. Use the Domain Names tab to see which extensions look free. Registry data can be out of date or incomplete, so confirm with a registrar before you buy.
// questions/
Questions.
Is this username checker free?
Yes. It is free, needs no account, and you can use it as often as you like.
Does it tell me whether a username is taken?
No, not for certain. Platforms don't offer a reliable public check that browsers can use, so this tool gives you a direct link to each profile. If the page shows an empty profile or a not-found message, the name is probably free. Check the platform itself before you rely on it.
What do the rule badges mean?
A green badge means the name fits the length and character rules we list for that platform. A red badge means it breaks one of them. A grey badge means we don't list a rule for that platform, so check it on the site. Platforms can change their rules at any time.
Why does it show a limit for some platforms but not others?
We only list the length and character rules we are confident about. For the rest, the badge says no rule is listed, so you should check the platform's sign-up page.
Can I check a domain name here?
Yes. Use the Domain Names tab to check 20 extensions. Results come from the public registry lookup and show "Likely free" when no registration was found. Confirm with a registrar before you buy.
Is my search stored?
Recent searches are kept only in your browser on this device, and you can clear them at any time. We do not store your searches on our servers.
How do I pick a username for a brand?
Choose a short name that is easy to say and spell, then check it across the platforms you will use. If the matching .com is taken, consider a clear alternative with the same base name, and keep it consistent everywhere.
Should my username match my domain name?
It helps people find you, but it is not required. Check both at once, and start with the platform you use most.
Why do some platforms say Check site?
We only list the length and character rules we have confirmed. For the other platforms, check the sign-up page, because the rules can change.
Can I check a list of names at once?
Not yet. For now, check one name at a time. Bulk checking may be added later.
Why do the variants matter?
Many people add an underscore, a dot or a word such as official to a name that is already taken. Using the same base name everywhere makes you easier to find, so try the variants when the main name is taken.
Your privacy
This checker runs in your browser. Your recent searches are kept only on this device, and nothing you type is sent to our servers. Read the website privacy policy for details.