ROT13

Transform A-Z letters with the classic ROT13 substitution while leaving numbers, punctuation and non-Latin characters untouched.

Input stays in this browser.

How it works

Immediate local processing.

1. Enter your input. Paste text, a value or the data this utility expects.
2. Adjust the relevant options. The result updates locally as your input changes.
3. Copy the result. No remote conversion roundtrip is required.

Common uses

Reverse text by Unicode code point.

Encode UTF-8 text as Base64 locally.

Decode Base64 bytes back to UTF-8 text.

Count characters with and without spaces plus related text statistics.

Replace every literal occurrence of a phrase with another value.

Delete blank lines while preserving the order of remaining text.

Collapse repeated spaces and tidy whitespace around line breaks.

Create lowercase hyphenated URL slugs from text.

Does this tool send my input to a server?

No. This utility runs on the text or values in your current browser session.

Do I need a Premier account?

No. Premier Tools can be used without signing in.