Palindrome Checker
Free Online Palindrome Checker
Instantly check whether a word, phrase, or sentence is a palindrome. A palindrome reads the same forwards and backwards. Famous examples include "racecar", "madam", and the phrase "A man, a plan, a canal: Panama". Our tool normalizes your input in real time and shows you both the cleaned and reversed versions.
How to Use
Type or paste any word or phrase into the input field above. The result updates instantly as you type. By default, spaces, punctuation, and case differences are ignored so that phrase palindromes like "Was it a car or a cat I saw?" are detected correctly. You can toggle these options off to perform a strict character-by-character comparison.
FAQ
What is a palindrome?
A palindrome is a word, phrase, number, or sequence of characters that reads the same forwards and backwards. Simple examples are "level", "noon", and "12321".
Does it work with numbers?
Yes. The checker treats numbers as characters, so "12321" or "1001" will be correctly identified as palindromes.
Why ignore spaces and punctuation?
Many classic palindromic phrases contain spaces and punctuation. By stripping these out, the tool can recognize sentence palindromes like "Never odd or even" that would otherwise fail a strict check.
Does it support languages other than English?
The tool works with any text that uses alphanumeric characters. However, when ignoring spaces and punctuation, only ASCII letters and digits are retained. Accented characters may be stripped in that mode.