Palindrome Checker

A palindrome is a word, phrase, number, or text that reads the same forwards and backwards. Classic examples include 'racecar', 'level', 'madam', and phrases like 'A man, a plan, a canal: Panama'. When checking palindromes, spaces, punctuation, and capitalization are typically ignored.

The tool removes all spaces, punctuation marks, and special characters from your input, converts everything to lowercase, then compares the cleaned text with its reverse. If they match exactly, it's a palindrome. The checker shows both the original text and the cleaned version for clarity.

Yes! The Palindrome Checker follows standard palindrome rules by ignoring spaces, punctuation, special characters, and case differences. This allows it to correctly identify phrase palindromes like 'Was it a car or a cat I saw?' as valid palindromes.

Famous palindromes include: single words (radar, level, kayak, noon, civic, refer), phrases ('Never odd or even', 'Do geese see God?', 'Was it a rat I saw?'), and names (Hannah, Bob, Otto). The longest single-word palindrome in English is 'tattarrattat' (a knock on a door).

Yes! The palindrome checker works with any text including numbers. Palindromic numbers include 121, 12321, 1234321. Palindrome dates are special calendar dates like 02/02/2020 or 12/11/21. Phone numbers, ZIP codes, and serial numbers can also be palindromes.

A palindrome reads the same forwards and backwards (like 'noon'). A semordnilap (palindromes spelled backwards) is a word that forms a different valid word when reversed, like 'stressed' and 'desserts', or 'live' and 'evil'. Semordnilaps are also called reverse pairs or word reversals.

Yes! Palindromes exist in virtually all languages. Examples: Spanish ('anilina'), French ('ressasser'), German ('Reliefpfeiler'), Finnish ('saippuakivikauppias' - soap stone seller). The palindrome checker works for any language using Latin characters, though language-specific rules about accents may vary.

Single-word: 'tattarrattat' (12 letters, from James Joyce's Ulysses), 'detartrated' (11 letters - chemistry term), 'rotavator' (9 letters - farming equipment). For phrases, 'A man, a plan, a canal: Panama' is famous. Theoretically unlimited palindromic phrases can be constructed.

Start with a central letter or word, then mirror it on both sides. Use symmetric words as building blocks. For phrases, plan the structure first, then find words that fit. Common techniques include using short connector words (a, I), proper names (Bob, Anna), and reversible words. Practice with simple patterns first.