Reverse Letters

Reverse the letters in every word — instantly

Reversing letters is one of the oldest tricks in text manipulation — used by children inventing secret messages, by typesetters checking palindromes, by puzzle designers building anagrams, and by anyone who needs to mirror text without literally rotating it 180 degrees. The Reverse Letters tool flips the letters of every word (or the entire text, your choice), turning "Hello" into "olleH" and "Reverse" into "esreveR" in a single click.

How to use it

Drop the words or phrases you want mirrored into the editor. Choose your mode: reverse each word (letters within each word are flipped, but word order is preserved) or reverse everything (the entire text is flipped end-to-end, including spaces and punctuation). Click Apply, copy the result, and use it anywhere.

Per-word reversal vs. full reversal

Per-word mode keeps the structure of your sentence intact while making each word unrecognisable on its own: "The quick brown fox" becomes "ehT kciuq nworb xof". This is useful for puzzles, riddles, and "find the hidden message" effects.

Full reversal reverses every character in the input, including spaces and punctuation: "Hello, world!" becomes "!dlrow ,olleH". This is the form used in palindrome checking — if the full reversal equals the original (ignoring case and punctuation), the text is a palindrome.

Real uses for reversed letters

Palindrome detection and creation. A palindrome reads the same forwards and backwards. Famous examples include "racecar", "level", "madam", and the longer "A man, a plan, a canal: Panama". To check whether a phrase is a palindrome, reverse it (ignoring spaces, punctuation, and case) and compare to the original. Constructing new palindromes is a creative challenge that this tool helps verify.

Hidden messages and games. A long-standing children's game is to write notes in reversed text and challenge friends to decode them. It is also a common puzzle mechanism in escape rooms and ARGs (alternate reality games).

Mirror writing experiments. Leonardo da Vinci famously wrote his journal entries in mirrored script. Reversed text approximates this effect (true mirroring would also flip individual letters left-to-right, but for typed text the closest equivalent is letter reversal).

Testing string-handling code. If you are writing a function that processes Unicode text, multi-byte characters, or right-to-left scripts, testing against reversed input is a quick way to surface assumptions about character order.

Logo and brand experiments. Some brand names look interesting reversed (the IKEA reversal "AEKI" doesn't, but plenty of two-syllable names do). Designers occasionally explore this as a creative starting point.

Cryptography homework. Letter reversal is one of the simplest possible substitution ciphers and a classic example in introductory cryptography courses.

What about non-ASCII characters?

The tool handles standard Unicode correctly, including accented characters (é, ñ, ü), non-Latin scripts (Arabic, Hebrew, Cyrillic, Greek, Chinese, Japanese, Korean), and emoji. A few important caveats:

• Right-to-left scripts like Arabic and Hebrew display in a specific direction by default. Reversing their characters produces text that is technically reversed at the code-point level but may not display the way you expect because of bidirectional text rules.
• Multi-codepoint emoji (like flag emoji or family-skin-tone emoji) are made up of several code points joined by zero-width joiners. The tool keeps these intact during reversal, so you will not get visually broken emoji.
• Combining marks (like accents that sit on top of a base letter) move with their base letter, so reversed accented text remains visually correct.

Privacy

Reversing text is computationally trivial and happens entirely in your browser. No upload, no logging, no storage. The tool is safe for any text input, including text you would not want sitting on a third-party server.

Small tool, surprisingly broad set of uses. Bookmark it for the next time you build a puzzle, check a palindrome, or want to send a friend a reversed note.