Secure Password & Passphrase Generator
Build unguessable credentials in milliseconds. Everything is generated locally with cryptographic randomness — no servers, no logs, no latency.
Generated locally with your browser's cryptographic random number generator. Nothing is transmitted, logged or stored.
How to generate a strong password offline: step-by-step guide
A strong password is long, random and unique per account. Follow these four steps to create one that resists brute-force and dictionary attacks, without installing software.
- Step 01
Pick password or passphrase mode
Choose character-based passwords for password managers, or a multi-word passphrase when you need something you can type from memory.
- Step 02
Set the length with the slider
Drag to at least 16 characters, or 4 to 6 words. The strength meter shows entropy in bits so you can see the security gain immediately.
- Step 03
Enable uppercase, numbers and symbols
Each toggle widens the character pool and raises entropy. Some legacy systems restrict symbols — disable that toggle if a form rejects your password.
- Step 04
Copy and store it safely
Press Copy, paste it into your password manager, and never reuse the same value across two services.
Frequently asked questions
How to generate strong password offline?
- This secure password generator runs entirely in your browser using the Web Crypto API, so it works offline once the page is loaded. Open the tool, disconnect from the internet if you prefer, choose your length and character rules, then press Generate. No password ever leaves your device or reaches a server.
How long should a strong password be?
- For most accounts, 16 to 20 random characters with uppercase letters, numbers and symbols is comfortably strong. For high-value accounts such as email, banking or cloud infrastructure, use 24 characters or more, or a 5-word passphrase.
Is a passphrase safer than a password?
- A random multi-word passphrase can be as strong as a random character password and is far easier to type and remember. Four to six unrelated words plus a number and a symbol gives excellent entropy while staying human-friendly.
Do you store or log generated passwords?
- No. There is no backend call, no analytics payload and no local storage of results. Values exist only in the browser tab memory and disappear when you close or refresh the page.
Should I reuse one strong password everywhere?
- Never. One breach would then expose every account. Generate a unique password per service and store them in a reputable password manager.