Start with a name or word you'll remember

The simplest usernames come from something already in your head — your first name, a nickname people call you, or a word you use often. If your name is Sarah, you might use "sarah" or "sarahm" if sarah is taken. If you go by "Alex," that works too. The goal is something you can type the same way every time without thinking.

Avoid usernames based on dates you might forget — like a birthday you no longer celebrate or a year that meant something once. Six months from now, you may not remember whether you used 1985 or 1986, and then you're locked out of your account.

Key Takeaways

  • Use something you already say or think about regularly, so you type it the same way every time without hesitation.
  • Most websites require 3 to 20 characters, no spaces, and only letters, numbers, and sometimes underscores or periods — check the site's rules before you choose.
  • Write down your username in a safe place the moment you create it, because you will need it to sign in later.
  • If the username you want is taken, add a number or underscore rather than changing the core word, so you still remember it.
  • Use the same username across multiple sites only if you do not mind people connecting your accounts; use different ones if privacy matters to you.

Check the website's rules before you type anything

Every website has different rules about what a username can be. Before you settle on a choice, look for the rules on the sign-up page — they are usually printed in small text near the username field or appear when you start typing.

Most sites require between 3 and 20 characters. Many allow only letters and numbers. Some let you use underscores (_) or periods (.), but spaces are almost never allowed. A few sites accept hyphens (-). If you want to use "sarah m" or "sarah-m," check first — if the site does not allow hyphens, it will reject it and you will have to start over.

Some websites are case-sensitive, meaning "Sarah" and "sarah" are different usernames. Others treat them as the same. This matters if you like capital letters — on a case-sensitive site, you must type the capital letter the same way every time, or you will not be recognized.

Add a number or symbol if your first choice is taken

If someone else already has the username you want, the site will tell you it is unavailable. Do not change the whole username — instead, add a number or underscore to the end of the word you chose. If "sarah" is taken, try "sarah1" or "sarah_m" or "sarah22." This way, the core of your username stays the same and you will still remember it.

Avoid adding random numbers like "sarah7392" unless you write them down when ready. Numbers you cannot remember are as bad as usernames you cannot remember.

Write it down in a place you will find it later

The moment you create a username, write it down. Use a notebook, a notes app on your phone, or a password manager — anywhere you know you will look when you need to sign in. Many people create a username, forget it by the next day, and then cannot access their account.

If you use a password manager like Bitwarden or 1Password, it will store your username alongside your password, so you only have to remember one thing. If you write it in a notebook, keep that notebook in the same place every time.

Decide whether to use the same username everywhere

Some people use the same username on every website — email, social media, banking, shopping. This makes it straightforward to remember, but it also makes it easier for someone to find all your accounts if they know your username.

Other people use different usernames on different sites. Your email username might be "sarah.m," your social media might be "sarahm1," and your banking site might be something completely different. This takes more effort to remember, but it keeps your accounts separate.

There is no right answer — it depends on how much privacy matters to you and how many usernames you are willing to keep track of. If you choose different usernames, write all of them down in the same place so you can find them when you need them.

Avoid usernames that reveal personal information

Do not use your full address, phone number, or Social Security number as a username. These are visible to other users on many websites, and putting personal information in a public place is a safety risk.

Usernames that include your birth year (like "sarah1985") or your child's name can also reveal more about you than you intend. Keep your username generic enough that a stranger cannot use it to find you or guess other information about you.

Test your username before you finish signing up

Some websites let you see what your username will look like before you confirm it. If the site shows you a preview, read it carefully — make sure there are no typos and that it looks the way you intended. Once you confirm, you may not be able to change it without contacting the website's support team.

If the site does not show a preview, type your username slowly and check it letter by letter before you click the button to create your account. A typo now means signing in with a typo every time.

Frequently Asked Questions

Can I change my username after I create it?

Some websites let you change your username in your account settings. Others do not allow changes at all, or only allow one change ever. Check your account settings or contact the website's support team to find out. If you cannot change it, you may have to create a new account with a different username.

What if I forget my username?

Most websites have a "Forgot username?" link on the sign-in page. Click it and enter your email address — the site will send you your username or a link to reset it. If you do not have access to the email address you used to create the account, contact the website's support team with proof of your identity.

Is it okay to use special characters like @ or # in my username?

Most websites do not allow special characters like @, #, !, or $ in usernames. Stick to letters, numbers, underscores, and periods unless the website specifically says it accepts other characters. Check the rules on the sign-up page to be sure.

Should I use my real name or a made-up name?

That depends on the website and what you are comfortable with. Social media sites often ask for your real name so friends can find you. Email and banking sites may require it for security. Other sites let you choose. Use your real name if you want people to recognize you, and use a made-up name if you prefer privacy.

Can someone else use the same username on a different website?

Yes. Your username on one website is separate from your username on another. Someone else can be "sarah" on Twitter and you can be "sarah" on Instagram — they are different accounts on different sites. This is why using the same username everywhere can make it easier for someone to find all your accounts.