Instant analysis of readability, grammar patterns, and writing clarity.
< 20
Words/sentence ideal
< 10%
Passive voice target
60+
Flesch score for web
0 words · 0 characters
Flesch Score Guide
90–100Very Easy
70–90Easy (6th grade)
60–70Standard (web ideal)
50–60Fairly Difficult
30–50Difficult
0–30Very Difficult
Readability by Publication
Reader's Digest~65
New York Times~60
Business writing60–70
Academic papers30–50
Legal documents< 30
Marketing copy70–80
Sentence Length Guidelines
Ideal average15–20 words
Maximum (complex ideas)30 words
Passive voice target< 10%
Adverb target< 5%
Transition words> 30%
Paragraph length3–5 sentences
✏️Activate Your Verbs
Replace weak verbs + nouns with strong verbs: "make a decision" → "decide," "give consideration" → "consider." Nominalizations make writing feel heavy and bureaucratic.
📏Vary Sentence Length
The best writing mixes short punchy sentences with longer ones. Short sentences create impact. Longer sentences allow you to develop a complete idea with appropriate nuance and context.
🎯Lead with the Point
Put your main point at the start of sentences and paragraphs. Readers scan. If your point is buried at the end, most readers won't reach it. Front-load importance.
🔪Cut Filler Words
Remove: just, very, really, quite, basically, actually, literally, simply, definitely, certainly. These adverbs almost never add meaning — they dilute your writing and signal uncertainty.
📊 Your Writing Snapshot
--Grade LevelFlesch-Kincaid
0Passive Voiceconstructions found
0Longest Sentencewords
--Most Used WordX times
This tool analyzes grammar patterns and readability metrics using rule-based checks. It identifies common issues but is not a comprehensive grammar engine — it will not catch every error. For professional publishing, legal, or critical documents, supplement with human proofreading. Readability scores are estimates based on sentence and word length formulas (Flesch-Kincaid).
Frequently Asked Questions
Flesch Reading Ease = 206.835 - (1.015 × average words per sentence) - (84.6 × average syllables per word). A score of 60-70 is standard for everyday reading. Scores above 70 are considered easy; below 50 is difficult. The formula rewards shorter sentences and simpler words. It was developed by Rudolf Flesch in 1948 and remains the industry standard for readability measurement.
Passive voice: "The report was written by Sarah." Active voice: "Sarah wrote the report." To fix: find the actor (who is doing the action?) and make them the subject. Passive is recognizable by "was/is/were/are + past participle" constructions. Tools like this one flag passive sentences — then rewrite by leading with the person or thing doing the action. Some passive is fine; aim to keep it under 10% of your sentences.
3-5 sentences per paragraph is the standard for most writing. Each paragraph should develop one idea. For web content, shorter paragraphs (2-3 sentences) improve scannability. Academic writing can run longer. One-sentence paragraphs can be used for emphasis — sparingly. If your paragraph runs over 6-7 sentences, look for a natural break point to split it.
Grammar is correctness (subject-verb agreement, comma placement, proper pronoun use). Style is effectiveness (sentence variety, word choice, tone, clarity). You can write grammatically correct but stylistically weak prose. Great writing requires both. Grammar rules are largely objective; style guidelines are contextual — what works for academic writing differs from marketing copy or journalism.
Screenshot your results and share with a fellow writer -- the readability score is often surprising.
Homophone confusion (your/you're, its/it's, their/they're/there), comma splices (joining two complete sentences with just a comma instead of a period or conjunction), subject-verb agreement breaking down in long sentences, misplaced modifiers, and inconsistent verb tense. These mostly come from writing speed, not lack of knowledge — a second read-through after stepping away catches a surprising number. Reading your own work aloud is especially effective.
Read your own work aloud — your ear catches what your eye skips. Track the 3–5 mistakes you repeat most and specifically scan for those on every edit pass. Study writing you admire for sentence variety and structure, not just content. Draft without editing, then edit in a separate dedicated pass — mixing the two slows both down and weakens both. Keep a personal style guide of rules you consistently forget.
Before a coordinating conjunction (for, and, nor, but, or, yet, so) joining two complete sentences. After an introductory phrase or clause. Between items in a list (consider the Oxford comma: “eggs, milk, and butter” vs. “eggs, milk and butter”). Around non-essential information that could be removed without changing the sentence meaning. Never use a comma alone to join two complete sentences — that is a comma splice, one of the most commonly flagged writing errors.
A typo/spell-checker (which is closer to what most simple free tools, including this one, do) catches misspellings, common homophone mix-ups, double spaces, and formatting issues. A full grammar checker does syntactic parsing — identifying subject-verb agreement errors, comma splices, sentence fragments, and run-on sentences by actually analyzing sentence structure. The disclaimer on this tool is honest about this: it is not a comprehensive grammar engine. For professional or high-stakes writing, use it as a first pass and supplement with careful human proofreading.
This tool specifically checks: common misspellings (a curated list of frequently confused words like “recieve,” “alot,” “teh”), homophone confusion in specific contexts (your/you're, its/it's, their/there/they're), double spaces, repetition of words, missing space after periods, sentences over 25 words (a readability flag), passive voice patterns, and a Flesch Reading Ease score based on sentence and word length. It does not detect subject-verb agreement errors, comma splices from clause parsing, or sentence fragments. For quick typo and readability checks before publishing, it is effective — just know its scope.
