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Palindrome Checker

Type or paste a word or phrase to instantly check if it reads the same forwards and backwards. Try classic examples or check your own.

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What is a palindrome?

A palindrome is a word, phrase, number, or sequence that reads the same forwards and backwards. The word comes from the Greek "palin" (again) and "dromos" (way or direction). Classic examples include words like "racecar", "level", "madam", and "kayak", as well as phrases like "A man, a plan, a canal: Panama" and "Was it a car or a cat I saw?"

When checking phrases, punctuation and spaces are usually ignored — only the letters are compared. This tool lets you choose whether to include spaces and punctuation in the comparison.

Famous palindromes

Words: racecar, level, madam, kayak, civic, radar, noon, deed, refer, rotor, tenet, repaper.

Phrases: "A man, a plan, a canal: Panama", "Was it a car or a cat I saw?", "Never odd or even", "Do geese see God?", "Mr. Owl ate my metal worm", "Step on no pets".

Numbers: 121, 1331, 12321. A palindromic number reads the same in both directions.

Frequently asked questions

By default, case is ignored — "Racecar" and "racecar" are both palindromes. Enable "Case sensitive" to require exact case matching, where "Racecar" would not be considered a palindrome (since 'R' ≠ 'r').
By default, spaces are ignored so that phrases like "A man a plan a canal Panama" are correctly identified as palindromes. Enable "Include spaces" to factor spaces into the comparison.
A palindromic sentence is a phrase that reads the same forwards and backwards when you ignore spaces and punctuation. The most famous example is "A man, a plan, a canal: Panama" — if you remove spaces and punctuation and read only the letters, it spells the same in both directions.
No. All checking runs locally in your browser. Your text never leaves your device.

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