How to Create a Strong Password

Make a strong random password in seconds. Set the length, pick the character types, and copy it. Free, no sign-up, and nothing leaves your browser.

Updated 6 min read By CodingEagles
Free tool Random Password Generator Build a strong random password with a live strength meter. Open tool

Open the random password generator, drag the length slider, tick the character types you want, and a strong password appears straight away. Copy it with one click. That is the whole job.

What actually makes a password strong

Two things: length and variety. Length is the bigger lever. Every character you add multiplies the number of possible passwords, so a 20-character password is vastly harder to guess than a 10-character one, even before you change anything else.

Variety is the second lever. When a password can contain lowercase letters, uppercase letters, numbers and symbols, each position has far more possible values. A guesser has to work through a much larger set. Turning on all four character types in the tool gives you the widest pool.

The strength meter reflects both. As you lengthen the password and add character types, it moves from weak toward very strong. It is a quick sanity check, not a grade you need to chase past “strong” for most accounts.

Setting it up

The tool has a few controls:

Length is the slider at the top. For everyday accounts, 16 characters is a sensible floor. For anything sensitive, such as email or banking, go longer. Email is worth protecting most, because it is the reset route into everything else.

Character types are the toggles: lowercase, uppercase, numbers and symbols. Leave all four on unless a site refuses certain ones. The tool guarantees at least one character from each type you switch on, so a password with symbols enabled will always actually contain a symbol.

Exclude look-alike characters hides characters that are easy to confuse by eye, such as the lowercase L, the number one, the capital O and the number zero. Turn this on when you will have to read the password off a screen and type it somewhere by hand. It costs very little strength and saves a lot of squinting.

Why a generated password beats one you invent

People reuse, and people pick patterns. A name plus a birth year, a favourite team, a keyboard run like “qwerty” all feel random but are among the first things a cracking tool tries. A generated password has no pattern to lean on, so it does not fall to those shortcuts.

The catch is that a long random password is hard to memorise, which is the point of the next section.

How to actually keep your passwords

Use a password manager. It stores a unique generated password for every account behind one strong master password, fills them in for you, and means you never have to remember or reuse anything. Most browsers now have one built in, and there are dedicated apps if you want more control.

If you are not ready for a manager yet, write important passwords down on paper kept somewhere safe at home. That is far better than reusing one password everywhere, which is the habit that turns a single leak into a chain of break-ins.

A note on privacy

The password is created entirely on your device. Your browser has a built-in source of cryptographic randomness, the same one it uses for security tokens, and the generator draws from it directly. Nothing is sent to a server, nothing is saved, and once you copy the password it exists only where you put it. You can confirm this for yourself: load the page once, switch off your connection, and it keeps working.

Frequently asked questions

What makes a password strong?
Length matters most. A long password built from a wide mix of letters, numbers and symbols has so many possible combinations that guessing it becomes impractical. Aim for at least 16 characters.
Should I include symbols?
Yes, where the site allows them. Each extra character type widens the pool a guesser has to work through, which raises the strength. A few sites block certain symbols, so keep a letters-and-numbers version ready as a fallback.
Is it safe to generate a password in my browser?
Yes. The password is built on your own device using your browser's built-in randomness, and it is never sent anywhere. Nothing is uploaded, logged or stored.
How often should I change my passwords?
Change a password if it appears in a breach or you suspect it was exposed. Otherwise a long, unique password per account is more useful than changing a weak one on a schedule.
Should every account have a different password?
Yes. A unique password per account means one leak cannot unlock the rest. A password manager makes keeping dozens of unique passwords practical.

Ready to try it?

Build a strong random password with a live strength meter. Free, in-browser, and 100% private — your data never leaves your device.

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