Password Generator - Strong Random Password Maker Online
Generate strong, secure, random passwords. Customise length and character sets — uppercase, lowercase, numbers, and symbols.
How to use this calculator
👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉
In plain English — what does this do?
🎲 Can’t decide something? Let this tool pick for you! It’s like flipping a coin or rolling a dice — totally random and fair. Great for picking who goes first or making a quick choice.
A password generator creates random, secure passwords using cryptographically strong randomness from your browser. You control the length and character set — uppercase letters, lowercase letters, numbers, and symbols. The entropy score shows how resistant the password is to brute-force attacks: higher entropy means a stronger password.
Generated passwords
Strength: · Entropy: bits
What is Password Generator - Strong Random Password Maker Online?
A password generator creates random, secure passwords using cryptographically strong randomness from your browser. You control the length and character set — uppercase letters, lowercase letters, numbers, and symbols. The entropy score shows how resistant the password is to brute-force attacks: higher entropy means a stronger password.
How to use it
- 1️⃣ Set the desired password length using the slider — longer passwords are significantly stronger.
- 2️⃣ Check or uncheck character sets to include uppercase, lowercase, numbers, and symbols.
- 3️⃣ Enable Exclude ambiguous characters to remove visually similar characters like 0, O, l, and 1.
- 4️⃣ Choose how many passwords to generate (1, 3, 5, or 10).
- 5️⃣ Click Copy next to any password to copy it to your clipboard.
💡 See it in action — a real example
❓ Common questions
- Is this password generator secure?
- Yes. Passwords are generated using the Web Crypto API (crypto.getRandomValues), which produces cryptographically strong random values. No passwords are transmitted or stored — all generation happens locally in your browser.
- What does entropy mean for passwords?
- Entropy measures the unpredictability of a password in bits. Each additional bit doubles the number of possible passwords. Passwords with 80+ bits of entropy are generally considered strong against modern brute-force attacks.
- How long should my password be?
- Security experts generally recommend at least 12 to 16 characters for most accounts and 20 or more for high-value accounts. Length has a larger impact on security than complexity alone.
- Should I use a different password for every account?
- Yes. Reusing passwords means a breach at one site exposes all your accounts that share it. A password manager can store unique strong passwords for every site so you only need to remember one master password.
- Why exclude ambiguous characters?
- Characters like 0 and O or l and 1 can be confused when reading a password aloud or typing it on an unfamiliar keyboard. Excluding them makes passwords easier to transcribe without reducing security significantly.