Case Modify

Free Case Converter & Text Case Tools

Convert text to uppercase, lowercase, title case, sentence case, camelCase, and more with free browser-based tools. Paste below or browse formatters, encoders, and converters—no signup required.

Browse all case converters

Text Tools
Tools
Buy me a Coffee

Processed locally in your browser after the page loads. Ads or analytics may still use cookies—see our Privacy Policy. Keyboard: Ctrl or ⌘ + Enter copies. Escape clears. Dedicated pages: Uppercase Converter, Lowercase Converter, Sentence case, Title Case, Capitalized Case, aLtErNaTiNg cAsE, InVeRsE CaSe, or the full case converters hub.

Character Count: 0 | Word Count: 0 | Sentence Count: 0 | Line Count: 0

Start with the converters and formatters people use most—then browse the full directory below.

Title Case ConverterFormat headlines with major-word capitalization.Sentence Case ConverterCapitalize the start of each sentence.Uppercase ConverterConvert text to ALL CAPS instantly.Lowercase ConverterNormalize shouting text to lowercase.camelCase ConverterJavaScript variables and JSON-style keys.PascalCase ConverterClasses, components, and type names.JSON FormatterPretty-print, validate, and minify JSON.Slug GeneratorTurn headlines into URL-safe slugs.

All tools

Search every formatter, encoder, and converter on Case Modify. Each tool runs in your browser.

Case converters

Upper Case ConverterTurn any text into UPPERCASE instantly.Lower Case ConverterFix caps-lock mistakes or normalize headings: instant lowercase conversion.Title Case ConverterFormat headlines in web, APA 7, Chicago, AP, or capitalize-each-word style.Sentence Case ConverterNormalize messy copy: each sentence starts with a capital; the rest goes lowercase.Capitalized Case ConverterConvert any text to Capitalized Case instantly.Alternating Case ConverterTurn any sentence into alternating uppercase and lowercase letters.Inverse Case ConverterInvert uppercase and lowercase letters to fix Caps Lock mistakes.

Developer naming converters

camelCase ConverterConvert text to camelCase for JavaScript variables, API fields, and code examples.PascalCase ConverterConvert text to PascalCase for React components, classes, TypeScript types, and code identifiers.snake_case ConverterConvert text to snake_case for Python variables, database columns, filenames, and config keys.kebab-case ConverterConvert text to kebab-case for URL slugs, CSS classes, package names, and CLI flags.CONSTANT_CASE ConverterConvert text to CONSTANT_CASE for environment variables, enum values, feature flags, and shared constants.dot.case ConverterConvert text to dot.case for translation keys, config paths, analytics events, and namespaced labels.

Text tools

Whitespace RemoverRemove double spaces, stray tabs, and unwanted line breaks from pasted text or logs.Duplicate Line RemoverStrip duplicate lines from pasted text—keep first or last occurrence.Character RemoverRemove specific letters, digits, or symbols from any text instantly.Duplicate Word FinderFind repeated or overused words in any draft.Em Dash RemoverStrip em dashes and en dashes from AI-generated or pasted text.Find and Replace TextFind and replace words or phrases in any text, with optional regex and case-insensitive matching.Invisible Text GeneratorGenerate invisible Unicode characters you can paste into WhatsApp, Discord, and games that reject empty input.Lorem Ipsum GeneratorGenerate lorem ipsum placeholder text by paragraphs, sentences, or words.NATO Phonetic Alphabet TranslatorSpell names, codes, and numbers with the NATO phonetic alphabet.Number to Words ConverterConvert numbers into written words using international or Indian numbering.Sentence CounterCount sentences, words, and characters in any text instantly.Phonetic Spelling ToolConvert English text into an approximate IPA phonetic transcription.Pig Latin TranslatorTranslate English into Pig Latin instantly.Plain Text ConverterConvert rich HTML or pasted web text into plain text while keeping list markers.Remove Line BreaksRemove line breaks from text or join lines with a space, comma, pipe, or nothing.Remove Text FormattingClean formatting from copied text: HTML tags, fancy Unicode fonts, and hidden characters.Remove UnderscoresReplace underscores with spaces to make file names and identifiers readable.Repeat Text GeneratorRepeat any text a chosen number of times with a custom separator.Roman Numeral Date ConverterConvert numbers and dates into Roman numerals (I, IV, MCMXCIX).Sort Words AlphabeticallySort words or lines alphabetically in ascending or descending order.Word Frequency CounterCount how often each word appears in your text.Word Cloud GeneratorBuild a word cloud from any text in your browser.APA Citation GeneratorGenerate APA 7th edition reference-list citations for books, journal articles, and websites.Text DiffCompare two texts line by line and see added or removed lines without uploading files.

Code & data

JSON FormatterPretty-print messy JSON, catch syntax issues, or minify for production—all in one free online tool.JSON EditorEdit JSON in dual tree, text, and table panes: repair, transform, compare, validate with a schema, and import CSV—fully local.HTML FormatterClean up copied HTML: consistent indentation, readable structure, optional minify.CSS FormatterTurn messy CSS into readable, indented code—or minify it for faster pages.JavaScript FormatterBeautify messy JavaScript with proper indentation—or minify for deploy.Markdown FormatterFix inconsistent Markdown spacing and structure, then preview how it reads.Regex TesterPaste a pattern and text, see matches and captures.A1Z26 CipherEncode or decode the A1Z26 cipher (A=1 … Z=26).Base64 Encode & DecodeEncode strings to Base64 or decode Base64 payloads back to plain text—ideal for JWT segments, API testing, and quick debugging.Binary Code TranslatorEncode text as binary or decode binary back to text.Caesar CipherShift letters to encode or decode messages.CSV to JSON ConverterTurn spreadsheet-style CSV into JSON instantly.GraphQL FormatterIndent and clean GraphQL operations and SDL.Hex to Text ConverterConvert hex strings to readable text or text to hex.HTML to Markdown ConverterConvert HTML to Markdown or Markdown to HTML instantly.JSON Escape / UnescapeTurn raw text into safe JSON strings or reverse escaped JSON.JSON StringifyPaste plain text, get a quoted JSON string with escapes.JSON to CSV ConverterTurn an array of JSON objects into spreadsheet CSV, or CSV rows back into JSON, in the browser.JSON to YAML ConverterConvert JSON to YAML in your browser.JSON UnstringifierTurn a JSON.stringify() result back into readable text, or stringify text for embedding in JSON.JWT DecoderDecode a JSON Web Token header and payload locally. Signatures are shown, not verified.Markdown Table GeneratorBuild Markdown tables from a spreadsheet-style grid.MD5 Hash GeneratorPaste any text and get an MD5 digest instantly.Morse Code TranslatorTranslate letters to Morse and Morse to text.Number SorterClean up comma or line-separated numbers.ROT13 EncoderShift the alphabet by 13 to obscure spoilers or puzzles.SCSS FormatterClean up nested SCSS for readability.SHA-1 Hash GeneratorCompute SHA-1 checksums in the browser for legacy APIs and Git-style object ids.SHA-256 Hash GeneratorGenerate SHA-256 hashes from text locally for integrity checks and fingerprints.SHA-512 Hash GeneratorCreate SHA-512 digests in the browser when a protocol asks for a 512-bit checksum.Slug GeneratorPaste a headline, get a clean slug for blogs and SEO.TypeScript FormatterClean up TypeScript and TSX snippets: consistent braces, spacing, and line breaks before code review or paste into docs.URL Encode & DecodeFix broken links and special characters in URLs.UTF-8 Encoder & DecoderSee UTF-8 byte sequences or recover text from encoded data.UTM URL GeneratorAdd utm_source, utm_medium, utm_campaign to any base URL.XML FormatterFormat or minify XML for RSS, SOAP, SAML, SVG, Android layouts, and sitemap files.YAML FormatterClean up Docker Compose, CI configs, and data files.

Font styles

Bold Text GeneratorCreate bold-looking text with Unicode—works in bios, captions, DMs, and Discord without HTML.Bubble Text GeneratorTurn plain text into bubble-style Unicode letters.Italic Text GeneratorMake 𝘪𝘵𝘢𝘭𝘪𝘤-style text with Unicode for social apps and messages.Superscript GeneratorGenerate superscript Unicode text instantly.Wide Text GeneratorAdd fullwidth characters for a retro wide look.Wingdings ConverterTranslate between Wingdings glyphs and readable characters.Upside Down Text GeneratorTurn readable text into upside-down letters you can copy.Strikethrough Text GeneratorAdd strikethrough styling without rich text.Reverse Text GeneratorTurn "hello" into "olleh" in one click.Mirror Text GeneratorCreate mirrored or backwards-looking text for social and design.Underline Text GeneratorAdd underline styling without HTML where Unicode works.Small Text GeneratorShrink the look of your text with Unicode small caps.Facebook Font GeneratorCreate Facebook-ready Unicode fonts for bios, posts, comments, Groups, Pages, and Marketplace text.Cursed Text ConverterMake creepy, slanted “cursed” text with combining characters.Unicode Text ConverterFind special characters for math, arrows, and emoji-related symbols.Zalgo Text GeneratorStack diacritics for distorted, glitchy strings.Fancy Text GeneratorGenerate fancy Unicode fonts for bios and posts.Instagram FontsCreate stylish Unicode fonts for Instagram bios, captions, and names.Discord Font GeneratorStyle Discord nicknames and status text with Unicode fonts.TikTok Font GeneratorGenerate Unicode fonts for TikTok bios, captions, and comments.WhatsApp Font GeneratorGenerate Unicode fonts for WhatsApp status and messages.X (Twitter) Font GeneratorTransform tweets and X bios with Unicode font styles.Aesthetic TextGenerate aesthetic Unicode text: wide vaporwave, cursive script, small caps, and typewriter styles you can paste anywhere.Cute Font GeneratorGenerate cute script, circled, and pretty Unicode letter styles for messages, bios, and notes.Gothic TextConvert text into Gothic, Fraktur, and bold blackletter Unicode characters you can copy and paste.Double-Struck TextConvert letters and digits into double-struck (blackboard bold) Unicode characters for math-style emphasis.Typewriter TextTransform text into monospaced typewriter-style Unicode characters you can paste into chats and bios.Subscript GeneratorConvert letters and digits into subscript Unicode for chemistry, math indices, and footnotes.Slash Text GeneratorAdd a strikethrough slash overlay to each letter using Unicode combining marks.Stacked Text GeneratorStack letters vertically, or place small letters on a word. Vertical is the default. Overlay is the bio style.Script Text GeneratorConvert text into cursive script and bold script Unicode characters for bios, captions, and nicknames.Sans-Serif Unicode TextGenerate sans-serif, italic, bold, and bold-italic Unicode letters.Circled Inverted TextTurn letters into filled, inverted circled Unicode characters (negative bubble letters) you can copy and paste.Squared Text GeneratorConvert text into squared Unicode letters.Squared Inverted TextGenerate filled squared Unicode letters (negative boxed characters) for logos, bios, and short labels.Parenthesized Text GeneratorWrap each letter in a parenthesized Unicode character.Bold Italic Text GeneratorConvert text into bold italic Unicode (mathematical bold italic).Unicode to Text ConverterConvert styled Unicode fonts (bold, italic, gothic, circled, small caps) back into plain Latin characters.Big Text GeneratorTurn short phrases into large 5-line ASCII banner letters.

Image converters

barcode generatorFree online barcode generator: create CODE 128, CODE 39, EAN-13, UPC-A, ITF-14, and QR codes.QR Code GeneratorGenerate QR codes for URLs, text, and notes.PNG to JPG ConverterFlatten PNG transparency onto a white JPEG for email, Word, and CMSes that still reject PNG.JPG to PNG ConverterWrap a JPEG as PNG without restoring discarded photo detail—use when a printer or editor wants PNG.JPG to WebP ConverterRe-encode JPEG photos as WebP for smaller hero images on modern sites. Another lossy pass—keep a master file.PNG to WebP ConverterKeep PNG alpha in a smaller WebP for UI icons and logos. Check edges if the encoder fringes transparency.WebP to JPG ConverterExport a WebP still as JPEG when a kiosk or older Office build cannot open WebP. Animation and alpha are dropped.WebP to PNG ConverterDecode a WebP still into PNG for editors that lack WebP, keeping alpha when the source had it.SVG to PNG ConverterRasterize SVG with fonts installed on this device. Missing typefaces drop out of the PNG; scripts are not a sanitizer.PNG to ICO ConverterPack a square PNG into a multi-size ICO favicon. Hairline logos vanish at 16×16—start from a simple 256px mark.ASCII Art GeneratorTurn a short banner or a photo into ASCII characters. This is a visualization, not OCR—it will not read text in a screenshot.

Random generators

Random Number GeneratorPick random integers from dice rolls to statistical samples.Random Month GeneratorGet a random calendar month instantly.Random Choice GeneratorEnter names, ideas, or tasks and get a fair random pick.Random Letter GeneratorBuild strings of random letters for games, passwords, or exercises.Random IP Address GeneratorCreate random IP strings for mocks and configs.Random Date GeneratorPick start and end dates, get random results.UUID GeneratorNeed unique IDs? Generate RFC 4122 UUID v4 values in one click—ideal for Postgres keys, API mocks, and QA data.Strong Password GeneratorGenerate long, random passwords with uppercase, lowercase, numbers, and symbols.

Unit converters

length converterConvert meters, feet, miles, inches, and nautical miles for travel, drawings, and homework—factors update as you type.volume converterSwitch liters, gallons, cups, and cubic meters for recipes, fuel, and tank estimates. Not a dosing calculator.frequency converterConvert hertz, kilohertz, megahertz, and RPM for audio, radio, and motor notes—do not mix RPM with Hz without the 2π/60 factor.temperature converterSwitch Celsius, Fahrenheit, and Kelvin for weather, cooking, and science—free, instant.time converterConvert seconds, minutes, hours, and days of duration—not time zones or calendar dates.weight converterConvert pounds, kilograms, ounces, and stones for luggage and kitchen scales. Not a medical dosing tool.bytes converterConvert bits, bytes, KB, MB, GB, and TB. Check whether you mean 1000 (SI) or 1024 (binary) when a disk label is ambiguous.angle converterConvert degrees, radians, gradians, and mils for trig homework and aiming tables—confirm which mil definition you need.fuel converterCompare US MPG and L/100 km without mixing the inverse scales. Use the same fuel type when you compare vehicles.mass converterConvert kilograms, grams, and slugs for science labs—use this when you need SI mass rather than kitchen-scale weight.power converterConvert watts, kilowatts, and horsepower. Note mechanical vs electrical horsepower when a spec sheet is ambiguous.pressure converterConvert pascals, bar, psi, and torr for HVAC and lab notes. Not a substitute for ASME stamp tables.area converterConvert square feet, square meters, acres, and hectares for flooring and lots. This is area math, not a GIS projection transform.speed converterConvert mph, km/h, m/s, and knots for travel and weather. Aviation paperwork still needs the published factor.density converterConvert density units such as kg/m³, g/cm³, g/ml, lb/ft³, slugs/ft³, and lb/gal.energy converterMove between joules, calories, kilowatt-hours, and BTU for homework and bills—check food Calorie vs calorie scale.force converterConvert newtons, pound-force, and kilogram-force for statics problems and spec sheets.astronomical converterConvert AU, light-years, and parsecs for classroom astronomy. Rounded factors are not spacecraft navigation.Time Zone ConverterConvert a date and time between IANA time zones, including DST where the zone observes it.

What is Case Modify?

Case Modify is a free online toolkit for text case conversion, text formatting, and related utilities. Paste text on the homepage to switch case instantly, or open a dedicated page when you need one rule applied consistently across a document.

What is a case converter?

A case converter changes how letters are capitalized without rewriting your content. Uppercase and lowercase shift every letter; sentence case and title case follow publishing rules for body copy and headlines; developer styles such as camelCase, PascalCase, snake_case, and kebab-case turn phrases into identifiers for code, URLs, and config files.

A case changer is the same job with a different name: one paste, then uppercase, lowercase, sentence case, or title case. Alternating case (mock caps) and inverse case help with creative text or fixing accidental Caps Lock input. Capitalized case uppercases the first letter of every word—a quick cleanup that is not the same as editorial title case, which leaves short words lowercase in the middle of a heading.

For code and URLs, match the layer: camelCase for JavaScript values, PascalCase for components, snake_case for Python and SQL, kebab-case for slugs, and CONSTANT_CASE for environment variables. The naming-style guide shows the same label in all five forms. For a social bio, read when Unicode fancy text breaks before you publish characters a search box will not treat as ordinary letters.

Which text case should you use?

Common text case formats and when each one fits.
CaseExampleCommon use
Sentence caseHello worldBody copy, emails, UI strings
Title CaseHello WorldHeadlines, blog titles, slide titles
UPPERCASEHELLO WORLDLabels, emphasis, fixing caps-lock
lowercasehello worldURLs, text normalization
Capitalized CaseHello WorldEvery word capitalized (not style-guide title case)
camelCasehelloWorldJavaScript variables, JSON keys
PascalCaseHelloWorldClasses, React components, types
snake_casehello_worldPython, SQL columns, data files
kebab-casehello-worldURL slugs, CSS classes, CLI flags
CONSTANT_CASEHELLO_WORLDEnvironment variables, enums
dot.casehello.worldi18n keys, config paths

Why use Case Modify?

  • Free to use with no account required for standard converters and formatters.
  • Fast copy-and-paste workflow—paste, convert, copy, and move on.
  • Standard converters, Unicode stylers, and formatters run in your browser after the page loads (no upload for those tools).
  • Useful for writers, students, developers, SEO professionals, and anyone cleaning pasted text.
  • Dedicated pages for each case style so you can bookmark the exact rule you need.
  • Related guides explain title case rules, naming conventions, and when to pick sentence case over title case.

Open a dedicated page for one capitalization rule, or browse the case converters hub for every style in one place.

Title Case

Capitalize headings and article titles with common English title rules.

This Is an Example of Title Case.

Sentence Case

Capitalize the first word of each sentence—standard for body copy and UI strings.

This is an example of sentence case.

Uppercase

Convert text to ALL CAPS for labels, emphasis, or fixing accidental lowercase input.

THIS IS AN EXAMPLE OF UPPER CASE.

Lowercase

Normalize shouting text or prepare slugs and identifiers before another conversion.

this is an example of lower case.

camelCase

JavaScript-style variable names: first word lowercase, following words capitalized.

helloWorldExample

PascalCase

Class and component names with every word capitalized: React, C#, and TypeScript types.

HelloWorldExample

snake_case

Python and database-friendly names with underscores between words.

hello_world_example

Alternating caps

Letter-by-letter mock caps for captions. Not for emails or page titles.

hElLo WoRlD

Capitalize text

Uppercase the first letter of every word. Not APA title case.

The Lord Of The Rings

Stacked text

One letter per line, or small letters over a word. Not Zalgo.

h / e / l / l / o

kebab-case

URL slugs, CSS classes, and CLI flags with hyphens between words.

hello-world-example

Browse by category

Frequently asked questions

Does Case Modify upload the text I paste?

Standard converters, Unicode stylers, formatters, and image conversions run in this browser after the page loads. You do not create an account to convert a draft.

What is the difference between title case and capitalized case?

Capitalized case uppercases the first letter of every word. Title case usually leaves short words such as “and” or “the” lowercase in the middle of a heading.

Which case style should I use for code?

JavaScript variables often use camelCase, React components use PascalCase, Python and SQL columns favor snake_case, and URL slugs typically use kebab-case.

How to use this tool

  1. Open Case Converter in a modern browser.
  2. Paste or type your text, code, list, or value into the input area.
  3. Review the output, then copy or download the result for your workflow.

Uppercase Converter — Turn any text into UPPERCASE instantly.

Lowercase Converter — Fix caps-lock mistakes or normalize headings: instant lowercase conversion.

Title Case Converter — Format headlines in web, APA 7, Chicago, AP, or capitalize-each-word style.

JSON Formatter — Pretty-print messy JSON, catch syntax issues, or minify for production—all in one free online tool.

Frequently asked questions

What is a case converter?

A case converter changes the capitalization of text—for example from ALL CAPS to lowercase, or to title case and sentence case. Case Modify runs in your browser so you can paste, convert, and copy in seconds.

Is this case converter free?

Yes. All text case tools run in your browser with no account required.

What case styles can I convert?

Uppercase, lowercase, title case, sentence case, alternating case, inverse case, and dozens of Unicode stylers.

Is my text uploaded to a server?

Conversions run locally in your browser after the page loads. Case Modify does not require you to upload text for basic case changes.

Explore Case Modify

Case Modify publishes free browser-based text converters, code formatters, encoders, random generators, and unit calculators. Each page runs locally after load unless a tool page states otherwise.

  • Case converters hub — Title case, sentence case, uppercase, lowercase, camelCase, PascalCase, snake_case, and kebab-case tools.
  • Code formatters hub — JSON, HTML, CSS, JavaScript, XML, YAML, Markdown, GraphQL, TypeScript, and SCSS formatters.
  • JSON tools hub — Format, minify, escape, stringify, and edit JSON in the browser.
  • Text utilities hub — Find and replace, duplicate line removal, sorting, encoding, and cleanup utilities.
  • Unit converters hub — Length, weight, temperature, time, volume, area, energy, and related conversion calculators.
  • Unicode font styles hub — Bold, italic, bubble, aesthetic, and platform-specific Unicode text generators.
  • Random generators hub — Random numbers, letters, passwords, UUIDs, dates, and related generators.
  • Case Modify blog — Guides on title case, camelCase, JSON formatting, and developer naming conventions.

Machine-readable summaries: llms.txt, llms-full.txt, agents.txt.