Free Online Text & AI Tools – Case Converter, Word Counter & More

Everything text.
One place.

Fast, free, and powerful tools to convert, analyze, clean, and optimize your text instantly — all in one place.

Case Converter
Instantly convert any text to UPPERCASE, lowercase, Title Case, or Sentence Case. Paste your text and click once — works on any length in under a second. The most-used free online case converter for writers, SEO pros, and bloggers.
Choose a conversion
Word Counter
Paste any text and get 8 live statistics instantly — words, characters, sentences, paragraphs, reading time, and more. Updates in real time as you type. Perfect for essays, SEO articles, social posts, and speeches.
8 live stats — all instant
Words
Characters
Sentences
Paragraphs
Lines
Read Time
Speak Time
Unique Words
AI Text Checker
Detect AI-written content instantly

Find out if your text reads as AI-generated or human-written. Get a detailed score with highlighted sentences — great for students, editors, and SEO writers who need authentic content.

Analyse Your Text
AI Prompt Score
Rate & improve your AI prompts

Score your prompts for ChatGPT, Claude, or Gemini before you use them. Get instant feedback on clarity, specificity, and structure — so you get dramatically better AI results.

Score My Prompt
Find & Replace
Batch-edit any text in seconds

Find and replace any word, phrase, or pattern across large blocks of text instantly. Supports plain text and regex. Perfect for writers, developers, and data cleaners.

Open Find & Replace
Text Compare
Diff two texts side by side

Paste two versions of any text and see exactly what changed — additions, deletions, and edits highlighted clearly. Great for proofreading, code reviews, and contract changes.

Compare Texts
Online Notepad
Auto-saves in your browser

A distraction-free notepad that saves your text automatically in the browser. No account needed. Your notes stay private on your device — never uploaded to any server.

Open Notepad

Free Online Text & AI Tools — No Signup Required

Quick Case Converter is a free, browser-based suite of text and AI tools used by writers, bloggers, SEO professionals, developers, students, and content creators worldwide. Every tool runs instantly in your browser — your text is never sent to any server, keeping your data 100% private.


Who Uses These Tools?

✍️ Writers & BloggersFix capitalization, count words, clean up pasted text, and take quick notes without interrupting their workflow.
🔎 SEO SpecialistsFormat meta titles to Title Case, check character counts, and clean up copy pasted from crawlers or spreadsheets.
💻 DevelopersConvert variable names to camelCase, snake_case, or kebab-case, and diff text files or JSON payloads side by side.
🎓 Students & TeachersFix pasted text with wrong capitalization from PDFs, count words in essays, and take auto-saving browser notes.

Why Quick Case Converter?

  • 100% free — no account, no subscription, no hidden paywall ever
  • Instant — every tool responds in under a second, regardless of text length
  • Private — all processing happens in your browser; your text is never uploaded
  • No install — works on any device with a browser: desktop, tablet, or mobile
  • No distractions — clean, focused UI built entirely for the task