Remove all word limits on Amazon FBA Optimizer, SEO Keyword Analyzer, and Social Media Tracker. Write without boundaries.
π Secure checkout. You won't be charged until your 7-day trial ends.
Real-time word count, grammar check, reading grade, Amazon FBA optimizer, SEO analyzer, and social media tracker β all in your browser. Auto-saves. No login.
Click Grammar Check to analyze your text.
Top Keyword Focus
Style & Composition Tips
Full breakdown β updates in real time.
Track character limits and detect banned words for your Amazon listing.
Paste SEO content below for exact word frequency percentages and readability analysis.
Real-time character limits for every major platform.
Free utilities for writers, bloggers, Amazon sellers, and content creators.
Unlimited use β no word limits, no account required.
Catch grammar errors and spelling mistakes.
Flesch-Kincaid, Fog Index, grade level.
Word frequencies and percentages.
Count characters with and without spaces.
Estimate read and speak duration.
UPPER, lower, Title, Sentence case.
Clean up whitespace and blank lines.
Compare two texts, highlight differences.
Generate placeholder text for mockups.
Free up to 800 words per session. Upgrade to Pro for unlimited usage on all three.
Track title, bullet, and description character limits. Flags banned Amazon words in real time.
Paste any article or page content for exact word frequency percentages and readability analysis.
Real-time character limits for every major social platform β updates as you type.
Catch grammar issues, style problems, and common spelling errors. Works instantly in your browser β no account needed.
Transform your text into any capitalization style instantly.
Generate placeholder text for wireframes, designs, and prototypes.
Count characters, words, lines, and more in real time.
Analyze text complexity with multiple readability formulas.
See which words appear most and their percentage of total words.
Calculate how long it takes to read or say your text aloud.
Clean up messy whitespace, double spaces, and blank lines.
Compare two texts side-by-side and highlight what changed.
Practical advice, tool updates, and insights for writers, bloggers, and content creators.
Passive voice weakens your prose. Here are ten practical techniques to rewrite passive constructions into active sentences.
The old rule of 2β3% is outdated. Learn what modern SEO data says about optimal keyword frequency.
Amazon's algorithm rewards relevant, keyword-rich titles under 200 characters. Here's the exact formula top sellers use.
Character limits force clarity. Here's how to say more with less on every social platform.
Most successful web content targets a 6thβ8th grade reading level. Find out why and how to get there.
Consistency beats intensity. Research shows daily writing minimums produce higher quality work over time.
A free, privacy-first writing suite built for everyone who works with words.
Real-time word count, grammar check, spell check, Amazon FBA optimization, SEO keyword density, social media tracking β all running in your browser with zero data collection.
Nothing you type ever leaves your browser. All analysis runs locally on your device. Text is auto-saved to browser local storage only β never sent to any server.
Lightning fast and distraction-free. Every calculation runs instantly in your browser at zero ongoing cost. No account needed, no waiting.
The FBA Listing Optimizer tracks character limits and flags banned words β helping you write compliant, optimized listings faster.
The SEO Keyword Density Analyzer reveals exact word frequency percentages, Flesch-Kincaid reading grade, and keyword density range β so you can optimize content for search without guessing.
The Social Media Character Tracker gives real-time limits for X/Twitter, LinkedIn, Instagram, and TikTok Bio β so you never get cut off or waste time on a caption rewrite.
Flesch-Kincaid grade, Gunning Fog index, passive voice, keyword frequency, sentence length, vocabulary richness, reading and speaking time, and more.
The core word counter is free forever. Advanced modules are free up to 800 words. Upgrade to unlock unlimited usage on all three professional modules.
Everything you need to know about UltraWordCounter and its tools.
UltraWordCounter is a free, browser-based writing analysis suite. It counts words, characters, sentences, and paragraphs in real time while analyzing reading grade, passive voice, keyword density, reading time, grammar, spelling, and more. Works instantly in your browser β no account needed.
The core word counter and all basic tools are 100% free with unlimited usage. The three professional modules (Amazon FBA Optimizer, SEO Analyzer, Social Media Tracker) are free up to 800 words. A Pro plan unlocks unlimited words across all three modules.
No. UltraWordCounter requires no account, no email, and no login. Open the site and start writing immediately.
Yes. The entire site is fully responsive and works on iOS Safari, Android Chrome, and all modern mobile browsers.
Your text never leaves your browser. All analysis β word counting, grammar checking, SEO analysis, FBA optimization β runs entirely on your device. Nothing is ever transmitted to any server.
As you type, your text is saved to your browser's localStorage β a database built into every modern browser. When you close the tab and reopen it, your text is exactly as you left it. This data stays on your device only.
The FBA module tracks Amazon's character limits in real time: Product Title (200 chars), Bullet Points (500 chars each), Product Description (2,000 chars). Progress bars fill and change color as you approach limits. It also checks for commonly banned Amazon words and flags them immediately. Works instantly in your browser β no account needed.
Paste any article, blog post, or page content into the SEO module. It calculates the exact word frequency percentage for every significant word (ignoring common stop words like "the," "and," "is"). Results show:
SEO best practice is to keep your primary keyword between 1β3% density. The analyzer tells you exactly where you stand so you can adjust before publishing. Works instantly in your browser β no account needed.
X/Twitter (280 chars), LinkedIn posts (3,000 chars), Instagram captions (2,200 chars), and TikTok Bio (80 chars). Each shows a real-time color-coded progress bar and over-limit warning.
The goal bar tracks writing progress in three modes: Words (word count target), Chars (character count β useful for social media/SEO), and Pages (calculated at 275 words per standard double-spaced page). The thin progress bar below the editor mirrors this subtly.
Reading grade uses the Flesch-Kincaid Grade Level formula: 0.39 Γ (words Γ· sentences) + 11.8 Γ (syllables Γ· words) β 15.59. The result is a US school grade level. Most popular web writing targets grade 6β8.
The Pro plan removes all word limits on the three advanced modules (Amazon FBA Optimizer, SEO Keyword Analyzer, Social Media Tracker). The core word counter and all other tools remain free for everyone.
Yes β both plans include a 7-day free trial. A credit card is required upfront with autopay enabled. You can cancel any time before the trial ends and will not be charged.
Think of it as $12/mo on annual or $19/mo on monthly. The $144 is simply what the annual plan totals for the year.
You can cancel any time from your account settings or by emailing [email protected]. If you cancel during your 7-day free trial, you will not be charged.
Questions, suggestions, or bug reports β we'd love to hear from you.
Or email: [email protected]
Effective: June 1, 2026
Last updated: June 2026
UltraWordCounter ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we handle information when you use ultrawordcounter.com.
We do not collect, store, transmit, or process any text you type or paste into any tool on this website. All text analysis runs entirely in your web browser using JavaScript. Your writing never leaves your device.
To provide auto-save functionality, we store your text and preferences (font size, goal setting, writing streak data) in your browser's localStorage. This data: stays entirely on your device; is never transmitted to our servers or any third party; can be deleted at any time by clearing your browser's site data; is not accessible to us or anyone else.
We do not use tracking cookies, advertising cookies, or analytics cookies. If you upgrade to a Pro plan, a minimal session cookie may be used solely to authenticate your subscription status.
If you purchase a Pro plan, payment is processed by a third-party payment processor (such as Stripe). We do not store your credit card information.
UltraWordCounter is not directed at children under 13. We do not knowingly collect information from children.
Questions? Email [email protected].
Effective: June 1, 2026
Last updated: June 2026
By using UltraWordCounter ("the Site"), you agree to these Terms of Service.
The core word counter is free and unlimited. The three advanced professional modules are provided free for text up to 800 words per session. Text exceeding 800 words in these modules will trigger a pause in analysis until text is reduced or a Pro plan is purchased.
The Pro plan is available on Annual ($144/year) and Monthly ($19/month) billing cycles. Both plans include a 7-day free trial period, credit card required at sign-up, and automatic renewal unless cancelled.
You may cancel your Pro plan at any time. If you cancel during your 7-day free trial, you will not be charged. If you cancel after the trial, you retain access until the end of the current billing period.
The Site is provided "as is" without warranty of any kind. We do not guarantee that analysis results will be accurate for any specific professional purpose.
Questions? Email [email protected].