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Isogram, Pangram and Lipogram Checker

This free tool tests a word or sentence for three letter games: isogram (no letter repeats), pangram (uses all 26 letters) and lipogram (avoids chosen letters). It shows repeated and missing letters.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Letter games are fun and also test your spelling and vocabulary. Puzzle makers and teachers use these checks all the time.

Type a word or sentence. Add letters to avoid if you want the lipogram test.

How to Use This Tool

  1. Enter or paste your input in the box or boxes above.
  2. Choose the options, if there are any.
  3. Press the button to run the tool.
  4. Read the result and use the copy button where one is shown.

How the Calculation Works

The text is changed to upper case, accents are removed and only A to Z are kept. A table of how often each letter occurs is built. If every letter has a count of 0 or 1 it is an isogram. If all 26 letters occur at least once it is a pangram. The lipogram test checks that none of the chosen letters occur.

Worked Example

lumberjack is an isogram. The quick brown fox jumps over the lazy dog is a pangram. Dad is not an isogram because d repeats.

Common Uses

  • Word puzzles and games.
  • Teaching spelling.
  • Writing constraints.
  • Checking test words.

Tips and Common Mistakes

  • Enter a whole sentence for the pangram test.
  • Numbers and symbols are ignored.
  • For anagram checks use the anagram checker.
  • Check the first result against a case you already know, so you can trust the tool for the rest.
  • Nothing you type leaves your device. The work is done by your browser, so it also works with a slow connection once the page has loaded.

Next, you may need the anagram checker, palindrome checker, character counter, text repeater.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

A word with no repeating letters, such as lumberjack or background. Some definitions allow every letter to repeat the same number of times, but this tool tests for no repeats.
A sentence that uses every letter of the alphabet at least once, such as "The quick brown fox jumps over the lazy dog".
A text that leaves out one or more letters on purpose. A book written without the letter e is the best known case.
Yes. Only the 26 letters A to Z are counted, with accents removed.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.