Instagram username checker and rules

Setting up · Social media · Big sixGrowing Instagram →

Checked 25 Oct 2026, 04:19 UTC

Our check reads Instagram from the outside, so treat "looks available" as a name to confirm when you sign up. How our checks work

CostFree

Age13 or older

Username lengthUp to 30 characters

You needEmail or mobile number

Holds the nameCreating the account

Sources ^{[1, 2, 3, 10, 11, reported]}

What can an Instagram username contain?

Letters, numbers, periods and underscores, up to 30 characters. Instagram doesn't publish these rules; guides agree on them, and our checker applies them.

Character	Allowed?	Where
Letters a to z	Yes	Anywhere; capitals don't count
Numbers 0 to 9	Yes	Anywhere
Period (.)	Yes	Not first or last, never two in a row
Underscore (_)	Yes	Anywhere
Spaces, hyphens, emoji, symbols	No

A Threads profile made with Instagram uses the same username.^{[8, 10, 11, reported]}

How do you sign up for Instagram?

Open the Instagram app or instagram.com.
Sign up with your email or mobile number, or an existing Facebook or Instagram account.
Choose your username, with a backup from the checker ready.
For a business, open Settings, then For professionals, then Account type and tools, and switch to a professional account. A private account becomes public when you switch.^{[1, 4]}

What should you know before you sign up?

Fact	What it means
First come, first served	Names can't be reserved. If an inactive account holds yours, add a period, number, underscore or abbreviation
Stay active	Instagram asks people to log in and post, and doesn't promise to release names from inactive accounts
Big accounts wait	Username changes on accounts that reach a lot of people may be reviewed first
Going back	You can usually return to an old username unless someone new has taken it. Guides say it's held for about 14 days
Trademarks	Owners of a registered trademark can report an account that uses it as a username

Sources ^{[5, 6, 7, 9, 12, 13, reported]}

What can go wrong, and how do you fix it?

Problem	Fix
"Username isn't available", but no profile shows	An account you can't see holds it. Use a close version; the checker finds one available on your other platforms too (what to do when your handle is taken)
Your username change is under review	Normal for big accounts. Instagram tells you when it's done
Your private account turned public	Switching to professional does that. Switch back for privacy

Sources ^{[4, 5, 7]}

Which platforms should you claim with Instagram?

Threads (same username), Facebook, TikTok, X and the .com.

Checks Instagram, Threads, Facebook, TikTok, X and the .com in one search.