Last updated October 13, 2026 · Report an error
A palindrome reads the same forward and backward — but checking longer phrases by eye (ignoring spaces, punctuation, and capitalization) gets error-prone fast.
This tool normalizes your text (removing spaces and punctuation, lowercasing) and checks whether it reads the same in reverse.
How it works
Enter a word or phrase. The tool strips everything except letters and numbers, lowercases the result, and compares it to its own reverse.
- Enter text to check.
- Click Calculate to see your results.
Examples
A classic palindrome phrase
"A man, a plan, a canal: Panama" normalizes to "amanaplanacanalpanama", which reads the same backward — a palindrome.
Who should use it
- Checking whether a word game answer or phrase is a genuine palindrome.
- Verifying palindrome puzzles or word game submissions.
Industry applications
- Puzzle and word-game creation
- Education and language arts
Advantages
- Handles full phrases, not just single words, ignoring spaces and punctuation.
- Shows the normalized text used for the comparison.
Common mistakes to avoid
- Manually checking a long phrase by eye and missing a spacing or punctuation difference.
- Assuming case matters, when standard palindrome checking is case-insensitive.
Best practices
- Use the normalized text shown in the result to double-check exactly what was compared, if the result surprises you.
Tips
- For programming practice, try implementing your own palindrome check and compare its output against this tool to verify your logic.
Frequently asked questions
Yes, with no signup and no limit on how many times you use it.
No — the tool lowercases everything before checking, so "Racecar" and "racecar" are treated identically.
No — they're stripped out before comparison, which is the standard definition used for palindrome phrases (not just single words).
Yes — numeric digits are kept during normalization, so a numeric palindrome like "12321" is checked correctly too.