Palindrome Checker
Check if any word, number or sentence is a palindrome instantly. Supports case-insensitive and punctuation-ignored checks — free & unlimited.
Famous Palindrome Examples
Click any example to check it instantly.
How to Use the Palindrome Checker?
Enter Text
Type any word, number, phrase or sentence in the input box above.
Set Options
Choose whether to ignore case, spaces and punctuation. Most palindrome checks ignore all three.
Check
Click Check Palindrome to instantly see if your text is a palindrome, along with a visual mirror view.
What is a Palindrome?
A palindrome is a word, number, phrase or sequence of characters that reads the same forward and backward. The word "palindrome" comes from the Greek words palin (again) and dromos (way, direction). Common examples include words like racecar, level, madam and phrases like "A man, a plan, a canal: Panama".
Palindromes appear in mathematics (like the number 12321), literature, and everyday language. They are a popular topic in computer science and programming as a classic string manipulation problem.
Types of Palindromes
Frequently Asked Questions
What is the longest palindrome word in English?
One of the longest palindrome words in English is "tattarrattat" (12 letters), coined by James Joyce in Ulysses to represent a knock on the door. Common long palindromes include "detartrated" and "kinnikinnik".
Is "A man a plan a canal Panama" a palindrome?
Yes! When you ignore spaces and punctuation, "amanaplanacanalpanama" reads the same forwards and backwards, making it one of the most famous palindrome phrases in English.
Are numbers palindromes too?
Yes. A numeric palindrome reads the same forwards and backwards, like 12321, 11, 99 or 1001001. This tool checks numbers as well as text.
Is this tool free?
Yes, 100% free. No signup, no limits. Check as many words and phrases as you want.