Random String Generator

Generate random strings with your choice of length and character sets — uppercase, lowercase, numbers, and special characters.

What Does This Tool Do?

Sometimes you need random strings — for API keys, tokens, codes, test data, or any situation requiring unique random text. This tool generates strings of any length using whatever mix of characters you choose: uppercase letters, lowercase letters, numbers, and/or special symbols.

Key Features

⚙️

Custom Character Sets

Choose any combination of uppercase, lowercase, numbers, and symbols.

📏

Any Length

Generate strings from 1 to 512 characters long.

📦

Multiple Strings

Generate many strings at once for bulk use.

🎲

Truly Random

Each string is independently randomly generated.

How to Use This Tool

Set your desired string length.
Choose how many strings to generate.
Select the character types to include.
Click Generate for your random strings.

How It Works

A character pool is built from your selected character sets. Characters are then picked randomly from that pool, one at a time, until the string reaches your specified length. This is repeated for each string you request.

Common Use Cases

💡 API Keys & Tokens

Generate random API keys, session tokens, or authentication codes.

💡 Test Data

Create random strings for populating test databases or form testing.

💡 Unique Codes

Generate discount codes, referral codes, or one-time-use codes.

💡 Salt Values

Create random salt strings for use in cryptographic operations.

Frequently Asked Questions

Can I include special characters?

Yes — toggle the symbols option to include !@#$%^&*()-_=+[]{}|;:,.<>? in the character pool.

Are these suitable for cryptographic use?

The strings use Math.random() which is suitable for most applications but not for cryptographic security. For cryptographic keys, use a dedicated cryptographic random number generator.

Related Tools

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