Reverse letters

Reverse letters is a free tool that reverses the order of bytes in a sentence, paragraph, or other piece of text.

How do I reverse the letters in text?

The result appears in the Reversed field.

For ASCII input, the entire input is reversed from end to beginning. ASCII letters, spaces, digits, and punctuation all move together. The tool does not correct spelling, preserve word order, or remove unwanted characters.

What is reversed text useful for?

Reversed text is mainly useful for puzzles, wordplay, simple content effects, and checking character sequences.

• Create clues for a crossword puzzle, treasure hunt, or escape room worksheet.
• Use reversed text for a joke or puzzle in a WhatsApp group, Discord channel, or forum.
• Check whether a word is a palindrome by comparing it with its reversed form.
• Prepare fixed ASCII test data for a form, text editor, or software test.
• Reverse an identifier when diagnosing a data-processing rule that reads characters from the wrong end.

Reversing text does not increase or reduce the number of ordinary ASCII characters, so it will not help text fit in a restricted field. It can also make links, email addresses, and hashtags unusable because their punctuation and character order change.

What happens to spaces, punctuation, and unusual characters?

ASCII spaces, punctuation, and digits are reversed along with the letters, while accented characters, emoji, and non-Latin scripts may not survive correctly.

The underlying operation uses PHP's strrev function. It reverses the bytes in the supplied string instead of reversing Unicode characters as complete units. Plain ASCII text, such as English letters, digits, and common punctuation, behaves predictably. A character such as é, an emoji, or text written in Arabic, Hindi, Japanese, or another non-ASCII script can contain several UTF-8 bytes, which may be split into an invalid sequence.

Empty input produces an empty reversal. When the original line order matters, process separate lines one at a time. For LF-only input, reversing an entire multiline block also reverses the positions of its line breaks and lines. With Windows-style CRLF line endings, byte reversal changes each CRLF sequence to LFCR, which may damage the line endings.

Worked reversal examples

These examples use ASCII characters, so the results are unambiguous.

• Input: Meet at 3 pm. Output: .mp 3 ta teeM
• Input: abc 123! Output: !321 cba
• Input: drawer Output: reward
• Input: Room 42 Output: 24 mooR

Capital letters remain capital letters but move to their new positions. Reversing text does not change letter case.

Should I reverse letters or reverse words?

Use Reverse letters when every byte in ASCII text needs to move into the opposite order. Use Reverse words when the words should change order while their internal spelling remains readable.

For example, reversing the letters in "red green blue" produces "eulb neerg der". Reversing the word order would produce "blue green red". If the input is a column of items exported from Excel or Google Sheets, Reverse list is usually the better choice because reversing characters would also reverse the spelling of every item.

This tool processes your text on the server. Your input travels to the server over HTTPS and is not stored.

Frequently asked questions

Does reversing text make it read from right to left?

No. For ASCII text, it changes the character order but does not set the writing direction. Applications still apply their own left-to-right or right-to-left display rules, so reversed Arabic or mixed-direction text can look especially confusing.

Can I reverse a CSV row without damaging it?

For an ASCII CSV record, byte reversal moves commas and double quotes. Doubled double quotes remain doubled, but the field order and contents change. The record may become invalid if it contains non-ASCII data or a reversed CRLF line ending. If you want to reverse the field contents, reverse each field value before rebuilding the CSV.

Is reversed text encrypted or securely hidden?

No. Reversal is a simple transformation that can be undone immediately. It provides no encryption or access control. Do not use it to conceal passwords, payment details, or confidential messages.

Will reversing text twice restore the original?

For ASCII text, yes, as long as the first result is copied exactly with no characters added or removed. With invalid UTF-8 produced from multibyte characters, another system may replace or discard damaged bytes, so a second reversal might not recover the original text. Keep a copy of the source when working with anything beyond plain ASCII.