Random String Generator
Create random strings with custom length, character sets, and case options — perfect for passwords, test data, unique IDs, and more.
Click "Generate" to create random strings
How to Use the Random String Generator
Generate random strings with complete control over length, character set, and format.
- Set length — Choose the length of each string from 1 to 100 characters.
- Choose character set — Select from alphanumeric, alphabetic, numeric, hexadecimal, or define your own custom character set.
- Select case — Choose mixed case, uppercase only, or lowercase only for letters.
- Set quantity — Generate between 1 and 100 strings at once.
- Generate — Click "Generate" to create your random strings.
- Copy or download — Copy individual strings with the copy button, copy all strings at once, or download as a text file.
Use Cases for Random String Generator
- Test data — Generate random strings for database testing, unit tests, or QA scenarios.
- Unique identifiers — Create unique IDs, reference codes, or tracking numbers.
- Passwords — Generate strong random passwords with custom character sets.
- API keys — Create random API keys, tokens, or secret keys for development.
- Filenames — Generate random unique filenames to avoid conflicts.
- Hex colors — Use hexadecimal mode with length 6 to generate random color codes.
- Placeholder text — Create random strings for mockups and prototypes.
Character Sets Explained
Alphanumeric: Includes all letters (a-z, A-Z) and digits (0-9). This is the most common choice for general-purpose random strings. Total of 62 possible characters.
Alphabetic Only: Only letters (a-z, A-Z) with no numbers or special characters. Useful when you need purely text-based strings. Total of 52 possible characters.
Numeric Only: Only digits (0-9). Perfect for generating random numeric codes, PINs, or ID numbers. Total of 10 possible characters.
Hexadecimal: Uses 0-9 and a-f (16 characters total). Commonly used for color codes, hash values, and computer-related identifiers. Set length to 6 for standard hex color codes.
Custom Characters: Define your own character set by typing the exact characters you want to use. For example, enter "ABCD1234" to generate strings using only those 8 characters. Great for creating strings with special requirements or including symbols like !@#$%.