Includes digits
This tool emits letters only.
Fix: Use Random String Generator for alphanumeric output.
Random Letter Generator
Generate random letters (a-z, A-Z, or mixed) of configurable length — ideal for games, puzzles, and tests
Count:
Length:
Case:
Generated output
Output will appear here...
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What is Random Letter Generator
Written by Giorgos Kostas. Last reviewed:
Random Letter Generator picks random letters from a-z, A-Z, or a mixed-case alphabet. You control length and batch size to generate one letter or thousands of letter strings.
Teachers, game designers, and developers use it for phonics practice, random avatar initials, CAPTCHA-style puzzles, and placeholder data.
Why use it
- Classroom phonics drills and word games.
- Random avatar initials for placeholders.
- Build CAPTCHA-style letter puzzles.
- Seed mock data in lowercase-only fields.
- Randomize call-sign style identifiers.
Features
- Lower / upper / mixed case
- Any length up to 4096
- Up to 10,000 strings per batch
- Perfect for games & drills
- Zero-upload Random Letter pipeline, nothing touches a server
How to use Random Letter Generator
- Set length. Pick how many letters per string.
- Pick case. Lower, upper, or mixed.
- Run. Copy the list.
Example (before/after)
Input
5
Output (length=5, mixed case, count=3)
KmTlr qJbDp HxRsE
Common errors
Unwanted ambiguity
Letters like I/l/1 are confusing visually.
Fix: Filter manually if you need 'unambiguous' output.
FAQ
Lowercase only?
Yes — pick lower, upper, or mixed via the toolbar.
What's the maximum length?
4096 letters per string, 10,000 strings per batch.
Can I add digits?
Use Random String Generator with the alnum charset.
Are non-ASCII letters supported?
No — this tool covers a-z / A-Z.
Is input uploaded?
No — each random letter is picked locally using your browser's RNG.
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