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TextKit

Convert Text Case Instantly

Accidentally left Caps Lock on? Paste your text below and switch between UPPERCASE, lowercase, Title Case, Sentence case and more in one click — plus 300+ other free, private text, code, image and data tools.

Case Converter is your homepage tool.
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Browse by Category

Text Tools

43 tools

Convert, clean, analyze and rewrite text.

  • Add Line Numbers
  • APA Citation Generator
  • Case Converter
  • Character Remover
View all 43 →

Code & Data

79 tools

Format, encode and transform code and data.

  • .gitignore Generator
  • AI Prompt Generator
  • AI Token Counter
  • Audio Converter
View all 79 →

Image & Media

28 tools

Convert images and extract content, in your browser.

  • Advanced Image Converter
  • Audio Converter
  • Color Blindness Simulator
  • Favicon Generator
View all 28 →

Font Styles

32 tools

Generate copy-paste Unicode fonts and styles.

  • Aesthetic Text Generator
  • Big Text Generator
  • Bold Text Generator
  • Bubble Text Generator
View all 32 →

Generators

29 tools

Generate random numbers, passwords, UUIDs, strings and more.

  • Advanced Bracket Maker
  • Baby Name Generator
  • Chore Chart Maker
  • Coin Flip
View all 29 →

Calculators

109 tools

Calculate percentages, ages, dates and other everyday math.

  • 401(k) Calculator
  • A/B Test Significance Calculator
  • Ad Metrics Calculator (CPM, CPC, CTR, CPA)
  • Age Calculator
View all 109 →

PDF Tools

13 tools

Merge, split, rotate and convert PDF files — all in your browser.

  • Add Page Numbers to PDF
  • Compress PDF
  • Crop PDF
  • Delete PDF Pages
View all 13 →

Fun & Games

40 tools

Randomizers, brackets, games and just-for-fun calculators.

  • Advanced Bracket Maker
  • Baby Name Generator
  • Chore Chart Maker
  • Coin Flip
View all 40 →

Music Tools

3 tools

Explore harmony, build progressions and train your musical ear.

  • Chord Progression Studio
  • Circle Of Fifths
  • Music Theory Workbench
View all 3 →

Finance

56 tools

Money tools — loans, savings, taxes, investing and payday math.

  • 401(k) Calculator
  • A/B Test Significance Calculator
  • Ad Metrics Calculator (CPM, CPC, CTR, CPA)
  • Amortization Schedule Calculator
View all 56 →

New & Notable

Business Valuation Calculator
Estimate enterprise and equity value with DCF, market and adjusted-asset methods, explicit reconciliation, scenarios and sensitivity analysis.
Chord Progression Studio
Compose with diatonic, secondary-dominant and borrowed-chord maps, then arrange, audition, transpose, save and export the progression.
Circle Of Fifths
Navigate major and minor keys, key signatures, diatonic harmony and functional relationships on an interactive harmonic wheel.
Music Theory Workbench
Explore scales, chords, intervals, keys and tempo in one visual workspace with instant local audio playback.
Business Startup Cost Calculator
Build a launch budget, add contingency, model monthly burn and see how long your opening cash will last.
Equipment Lease Vs. Buy Calculator
Compare the after-tax present cost of leasing equipment with financing a purchase, including residual value and opportunity cost.
Business Ratios Calculator
Turn an income statement and balance sheet into a professional liquidity, leverage, profitability and efficiency dashboard.
Total Compensation Calculator
Compare salary, bonus, employer benefits, paid time off and risk-adjusted equity on one annual and hourly basis.
Emergency Fund Calculator
Set a risk-adjusted cash reserve from essential expenses, income stability, dependents, insurance and existing liquid savings.
Debt Payoff Vs. Invest Calculator
Compare guaranteed interest savings with after-tax, risk-adjusted investment outcomes over the same time horizon.
Rent Vs. Buy Calculator
Compare renting and owning across a chosen horizon with transaction costs, maintenance, taxes, appreciation and investment opportunity cost.
College Savings Calculator
Project inflation-adjusted education costs and the monthly savings needed after grants, existing funds and investment growth.

Popular Tools

Title Case Converter
Convert text to title case with smart rules for articles, conjunctions and prepositions.
QR Code Generator
Create custom QR codes from any URL or text and download them as PNG or SVG — generated entirely in your browser.
JSON Formatter & Minifier
Beautify, validate and minify JSON with clear parse errors.
Unicode Text Converter
Preview your text in 35+ Unicode styles at once with copy buttons and favorites.
Word Counter
Count words, characters, sentences and paragraphs in real time, with reading time and keyword density.
Strong Password Generator
Generate secure random passwords using cryptographic randomness.
Base64 Encode & Decode
Encode text to Base64 and decode Base64 back to readable text.
Slugify URL Generator
Turn any text into a clean, SEO-friendly URL slug.

330+ Free Online Tools — No Sign-Up, No Uploads

TextKit started as a lightning-fast case converter and has grown into a complete toolbox of 330+ free, browser-based utilities. Turn shouty ALL-CAPS into clean Sentence case, format a heading in Title Case, or create quirky aLtErNaTiNg cAsE — every conversion happens instantly in your browser, and your text is never uploaded to a server, so it stays completely private.

Text, Code, Images, Calculators & More

Beyond changing case, TextKit bundles tools for counting and cleaning text, formatting code and data (JSON, CSV, SQL and more), generating QR codes and barcodes, converting images, creating Unicode fonts and emoji, and producing random values like passwords and UUIDs. Our growing collection of calculators covers everyday math, unit and currency conversion, mortgages, loans, retirement, BMI, GPA and a full scientific calculator. Every tool has its own page with a clear guide, examples and FAQs, and works on mobile and desktop alike.

Fast, Private and Free

There's nothing to install and no account to create. Tools run locally with JavaScript, so most keep working even offline once the page has loaded. Bookmark TextKit and the tool you need is always one click away.