Developer Tools
Text Statistics
Analyze reading level, word frequency, sentence length, vocabulary richness, and reading time.
Most used words
Sentence length distribution
About text statistics
Paste a longer piece of writing to see how it's put together. The tool reports the Flesch-Kincaid grade level, the average sentence length in words, the longest word, the shortest word that isn't a common filler word and your vocabulary richness. It also gives four time estimates: speaking at 130 words per minute, and reading at a slow 150, an average 220 and a fast 300. Most used words lists your ten most frequent words, skipping 23 common ones such as the, and and is. The sentence length chart draws one bar per sentence in the order they appear, so a wall of long sentences or a string of very short ones stands out at a glance. Hover over a bar to see its word count; bars stop growing at 25 words. Vocabulary richness is the number of different words divided by the total, also known as the type-token ratio. It drops as a text gets longer, because every writer has to reuse words, so only compare it between texts of similar length. The grade uses the same syllable estimate as the Readability Checker, and all of it runs in your browser.
Frequently asked questions
What's a healthy average sentence length?
There is no single right number, but you can see its weight in the Flesch-Kincaid formula this tool uses: every extra word in the average sentence adds 0.39 to the grade, so cutting five words from each sentence lowers it by about two. Mix lengths as well. The chart makes a paragraph where every sentence has the same size easy to spot.
What does 'vocabulary richness' mean?
The share of different words in the text. A 100-word paragraph that uses 60 different words scores 60%. Longer texts repeat more, so a 5,000 word report will almost always score lower than a 300 word blog post, even when both are well written.
Why is the shortest word sometimes a number or a single letter?
Numbers and single letters count as words. The tool skips its 23 common filler words when it picks the shortest one, but a word like I, a digit or an initial can still win.
Which reading speed should I use?
Average read, at 220 words per minute, fits most adult readers. Marc Brysbaert's 2019 review of 190 studies found adults read English non-fiction silently at 238 words per minute on average, with most people between 175 and 300. Use slow read for technical or unfamiliar material, and speaking time for talks, videos and podcasts.