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Password Generator
Make a strong password on your own device. Pick the length and the character types, and the password is made in your browser — it is never sent anywhere, stored anywhere, or seen by anyone else.
Example: a 16-character password using all four character types has about 103 bits of strength — rated Strong. An 8-character password using only small letters has about 38 bits — rated Weak.
Your password
Press Generate password. The strength and the number of possible passwords appear here.
How to use the password generator
- Pick a length. 16 characters is a good pick for most accounts.
- Leave all four character types ticked — small letters, capitals, numbers and symbols — unless a site asks for something narrower.
- Press Generate password. A new password appears in the box, with its strength in the panel on the right.
- Press Copy password and paste it where it is needed. Save it in a password manager — do not reuse it on another site.
Worked example — 16 characters against 8
Strength is measured in bits: more bits means more possible passwords, and a harder guess. A 16-character password using all four character types (93 possible characters per spot) has about 103 bits of strength — rated Strong. That is roughly 3.13 × 1031 possible passwords. An 8-character password using only small letters (26 per spot) has about 38 bits — rated Weak — with only about 2.09 × 1011 possibilities. Length matters more than anything: adding characters beats adding character types.
Keep it safe. A strong password only helps if nobody else knows it. Do not share it, do not email it to yourself, and do not reuse it on more than one site. If a site ever asks you to send your password by email or chat, do not — real sites never ask for that.
Frequently asked questions
How do I make a strong password?
Use at least 16 characters with a mix of small letters, capitals, numbers and symbols. Make it random, not a word or a date, and do not reuse it on another site.
Is the password I generate stored anywhere?
No. It is made in your browser with your device's random number maker, and it is never sent to any server or stored. Once you close the tab, it is gone — so save it in a password manager first.
How long should a password be?
16 characters is a good pick for most accounts. 12 is the bare minimum worth using; 20 or more is better for email and banking.
Are symbols really needed?
They help, but length matters more. A 20-character password of small letters only is stronger than an 8-character password with every symbol in it. Use both if you can.
Should I use the same password on two sites?
No. If one site leaks it, every other account with the same password is open. Use this generator to make a different password for each site, and keep them in a password manager.
Sources and method. Strength in bits = length × log2(pool size), where the pool is 26 small letters + 26 capitals + 10 numbers + 25 symbols = 93 characters. Worked examples checked in Node: 16 characters with all four types = 103.1 bits (Strong); 8 small letters only = 37.6 bits (Weak); 93^16 ≈ 3.13 × 10^31.