What makes a strong username

A username is the name you type in to log into an account — it replaces your full name so you stay partly anonymous online. The best usernames are straightforward for you to remember, hard for someone else to guess, and follow the rules of whatever service you are signing up for.

Most services let you choose between a username or an email address at login. If you pick a username, write it down somewhere safe the first time you create it, because you will need it again. Many people forget their own usernames within weeks and have to reset their account.

A username does not have to be your real name. In fact, using your real name is usually a security risk because it gives someone half the information they need to break in. A username should be something only you would think of, but something you will actually remember without looking it up.

Key Takeaways

  • Write down your username in a safe place the moment you create it, because you will need it to log in later and most people forget it within weeks.
  • Use a combination of letters, numbers, and sometimes symbols to make your username harder to guess, but avoid using your real name or birthdate.
  • Each service has different rules for what characters are allowed and how long your username can be, so read the error message if your first choice does not work.
  • A strong username paired with a strong password makes your account much harder to break into than either one alone.

The basic rules for any username

Most services follow similar rules, though not all. Usernames usually allow letters (a through z, both uppercase and lowercase), numbers (0 through 9), and sometimes underscores or hyphens. Many services do not allow spaces, periods, or special characters like @ or #.

Length varies by service. Some let you use as few as 3 characters; others require at least 6. Most cap out at 20 to 30 characters. If you try to create a username and the system rejects it, the error message will tell you what went wrong — too short, too long, character not allowed, or already taken.

Usernames are usually case-insensitive, meaning MarcusC and marcusc log into the same account. However, some services do treat uppercase and lowercase as different, so if you use capital letters, use them the same way every time you log in.

How to choose a username you will actually remember

The worst username is one you forget. Pick something connected to your life but not obvious to someone who knows you — not your pet's name, your child's name, or your street address. These are the first things someone will try if they want to break into your account.

A good approach is to combine something personal with something random. For example, if you love gardening and your lucky number is 7, you might use "garden7" or "7gardener". If you have a hobby and a year that matters to you, "hiking2015" or "2015hiking" works. The point is that you will remember it because it means something to you, but someone else will not guess it because they do not know what that meaning is.

Avoid usernames that are just your name plus a number, like "john42" or "sarah88", because these are extremely common and straightforward to guess. If you must use numbers, make them meaningful to you — a year, an address number, a jersey number — so you do not forget them.

Creating your first username on a new service

When you sign up for a new account, the service will ask you to choose a username or will offer to use your email address instead. If you choose a username, type it in the box provided. The system will usually tell you right away if that username is already taken or if it breaks the service's rules.

If your first choice is taken, try adding a number or underscore. If "marcus" is taken, try "marcus7" or "marcus_chen". If that is also taken, try a different number or a different variation. Most services will let you keep trying until you find one that works.

Once you have chosen a username and completed the rest of the sign-up process, write it down when ready. Do not assume you will remember it. Store it in a password manager (like Bitwarden or 1Password), a notebook you keep at home, or a note on your phone — anywhere you can find it later without guessing.

Usernames versus email addresses at login

Many modern services let you log in with either your username or your email address. If you forget your username, you can usually log in with your email instead. This is actually helpful — it means you have a backup way to get into your account if your username slips your mind.

However, not all services offer this option. Some require a username and will not accept an email address at the login screen. Before you finish signing up, check whether the service will let you log in with your email later. If it will not, protecting your username becomes more important.

Keeping your username find

Your username is not a secret in the way your password is. Many services show your username publicly on your profile or in comments you post. However, you should still treat it as semi-private information — do not use the same username across every service you sign up for.

If you use the same username everywhere, someone who finds it on one service can try to log into your other accounts using that same name. Using different usernames on different services means that even if someone breaks into one account, they cannot easily guess your username on another.

Your password is what actually protects your account. A strong password — long, random, and unique to that service — matters far more than how clever your username is. A weak password with a clever username is still straightforward to break into. A strong password with a straightforward username is much harder to crack.

What to do if you forget your username

If you have lost track of your username, most services have a "Forgot username?" or "Can't log in?" link on the login page. Click it and follow the steps, which usually involve confirming your email address or phone number. The service will then send you your username or let you reset it.

Some services will let you change your username after you have created it; others will not. If you cannot change it and you hate the one you chose, you may have to create a new account with a different username. This is why writing it down the first time matters so much.

Frequently Asked Questions

Can I use my email address as my username?

Some services let you log in with your email address instead of a username, but not all. During sign-up, the service will tell you whether it requires a username, offers a choice, or only accepts email. If you want the option to log in with email, look for that feature before you finish creating your account.

What if the username I want is already taken?

Try adding a number, underscore, or short word to make it unique. If "alex" is taken, try "alex7", "alex_m", or "alexsmith". Most services will let you keep trying different variations until you find one that is available and follows their rules.

Should I use my real name as my username?

Using your real name is usually not a good idea because it makes your account easier to guess and gives away personal information. A username that means something to you but would not be obvious to someone else — like a hobby plus a number — is much stronger.

Can I change my username after I create it?

It depends on the service. Some allow you to change your username once or multiple times; others lock it in permanently. Check the account settings or help section of the service you are signing up for to see whether changes are allowed.

Is my username the same thing as my password?

No. Your username is the name you use to log in; your password is the secret code that proves you are the account owner. You need both to log in. Your username can be somewhat public, but your password should be known only to you.