Random String Generator - Create Random Text Online

Generate random strings with custom length and characters. Include letters, numbers, symbols. Cryptographically secure. Free, private, offline.

Length:

Count:

Character Sets

Uppercase (A-Z)

Lowercase (a-z)

Numbers (0-9)

Symbols (!@#$%)

Exclude ambiguous (0O, 1lI)

No repeating characters

Custom Characters (optional)

Generated Strings

Click Generate to create random strings

0 characters | 0 bits of entropy

Common Presets

Copied!

Random Color Generator - Create Random C…

Dice Roller - Roll Virtual Dice for D&D …

View all Data randomizers →

Frequently Asked Questions

Yes. We use the Web Crypto API (crypto.getRandomValues) which provides cryptographically secure random numbers.

Yes. Enable 'Exclude ambiguous' to remove characters like 0/O, 1/l/I that look similar.

You can generate strings up to 10,000 characters. For longer strings, generate multiple times.

Yes. All generation happens in your browser using JavaScript. No data is sent to any server.

Random String Generator offers more flexibility: bulk generation, custom characters, and no repeating characters options. Password Generator focuses specifically on password creation with strength indicators and security best practices.

It ensures each character appears only once in the output. Useful for generating unique codes or sequences. Note: string length is limited to the available character set size with this option enabled.

Yes! Uncheck all character sets and enter your custom characters in the 'Custom Characters' field. The tool will only use those characters for generation.

Random strings are perfect for: verification codes, coupon codes, session tokens, test data, unique IDs, database seeds, or any situation requiring unpredictable text.

Bulk generation is useful for creating batches of coupon codes, invite codes, test data sets, or unique identifiers. Generate up to 100 strings simultaneously.

Entropy measures randomness in bits. It's calculated as: length × log2(character_set_size). Higher entropy means more possible combinations and better security. Aim for 128+ bits for cryptographic uses.

Common Presets

Related Tools