Random Letter Generator
Generate random letters from A to Z. Choose uppercase or lowercase, how many letters, and whether repeats are allowed. Fast, fair and fully private.
What is the Random Letter Generator?
The ByteTools Random Letter Generator picks random letters from the English alphabet, A to Z. Choose uppercase or lowercase, decide how many letters you want, and turn duplicates on or off — then generate a fresh set with a single click.
- Random letters from A to Z
- Uppercase or lowercase output
- Choose how many letters to generate
- Allow or forbid repeated letters
- Cryptographically secure, unbiased picks
- One-click copy — runs entirely in your browser
How to use the Random Letter Generator
- 1
Choose uppercase or lowercase letters.
- 2
Set how many letters you want to generate.
- 3
Turn "Allow duplicates" off if every letter must be unique.
- 4
Click Generate to draw your random letters.
- 5
Copy the result or generate a new set.
About the Random Letter Generator
The ByteTools Random Letter Generator picks random letters from the English alphabet, A to Z. Choose uppercase or lowercase, decide how many letters you want, and turn duplicates on or off — then generate a fresh set with a single click.
It is handy for word games and Scattergories rounds, classroom spelling and phonics activities, picking a random starting letter for a challenge, seeding passwords or codes, and naming variables or test data. With duplicates disabled you can even draw a random ordering of unique letters.
Letters are chosen locally in your browser using a cryptographically secure random source, so draws are instant, unbiased and private. Nothing is uploaded or stored, and you can regenerate as often as you like.
Frequently asked questions
How does the random letter generator work?
It maps the 26 letters of the alphabet to numbers and draws them with crypto.getRandomValues, the browser's secure random source, using rejection sampling so every letter is equally likely. You control the case, count and whether repeats are allowed.
Can I generate letters without repeats?
Yes. Turn off "Allow duplicates" and each letter in the result is unique, like drawing lettered tiles from a bag. Because there are only 26 letters, a no-repeat draw cannot exceed 26 characters.
What can I use random letters for?
Common uses include Scattergories and other word games, choosing a random letter to start a challenge, spelling and phonics practice, generating short codes, and seeding placeholder or test data.
Can I choose uppercase or lowercase?
Yes. A single toggle switches the whole result between uppercase (A–Z) and lowercase (a–z), so you get exactly the case your game, code or test needs.
Are the letters truly random?
They are drawn from a cryptographically secure generator rather than the weaker Math.random, and modulo bias is removed with rejection sampling, so no letter is favoured over another on any draw.
Guides for Random Letter Generator
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