Free tool · Text Utilities
Palindrome Checker
Check whether a word or phrase reads the same backwards.
Type a word or phrase to check whether it is a palindrome, meaning it reads the same forwards and backwards once spaces, punctuation, and capitalization are ignored. Works for single words as well as full phrases like "A man a plan a canal Panama."
- Nothing leaves your device
- Runs entirely in your browser
- Free, no account needed
How to use Palindrome Checker
Two steps, and nothing to install.
Type a word or phrase
Spacing, punctuation and capitalisation are all ignored.
Read the result
You get a straight yes or no on whether it reads the same both ways.
More free tools
Free, private, and no sign-up on any of them.
How this works in your browser
The input is normalised first: everything is lowercased and any character that is not a letter or digit is removed, leaving only the characters that carry meaning for the comparison. That cleaned string is then compared against its own reverse. The normalisation step is where the interesting decision sits, since a strict character-for-character check would reject every classic phrase palindrome on the basis of a comma. Removing punctuation and spacing matches the convention the well-known examples assume, and everything runs in your browser with nothing transmitted.
Who uses Palindrome Checker
Word games and puzzles
Check a candidate quickly while solving or setting a puzzle.
Classroom exercises
Demonstrate the concept with words and full phrases.
Writing wordplay
Test constructed phrases while building one.
Programming practice
Verify expected answers when implementing the classic exercise.
Frequently asked questions
What it can and cannot do, and what happens to your files.
Does capitalization matter?
No, the check ignores capitalization, so "Racecar" and "racecar" are treated the same.
Does punctuation and spacing matter?
No, spaces and punctuation are ignored, which is what allows phrases like "A man a plan a canal Panama" to check out as palindromes.
Can I check numbers too?
Yes, numeric strings like "12321" work the same way as words.
Why ignore spaces and punctuation?
Because that is the convention the well-known examples rely on. "A man, a plan, a canal, Panama" only works once punctuation and spacing are set aside. A strict character-for-character check would reject almost every famous palindrome, which would make the tool considerably less interesting.
What are the best-known palindromes?
Single words include level, rotor, kayak and racecar. Phrases include "Never odd or even", "Madam, I’m Adam" and the canal-Panama example. Longer ones exist but tend to read as constructed rather than natural, which is part of their appeal.
Do palindromes appear outside wordplay?
Yes, notably in genetics, where palindromic DNA sequences read the same along both strands and mark sites where restriction enzymes cut. The concept also turns up in computer science as a standard exercise in string manipulation.
Is my text sent anywhere?
No. The check runs entirely in your browser.
Check a palindrome - free and instant.
Files never leave your device. No upload, no account, and free for unlimited use.