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.

Convertisseur de casse gratuit : title case, casse de phrase, majuscules

Collez un texte et passez en casse de phrase, title case, MAJUSCULES ou camelCase dans le navigateur. Outils gratuits en ligne — la conversion reste sur l'appareil, sans inscription.

Voir tous les convertisseurs de casse

Outils texte

Outils

Offrez-moi un café

Traité localement dans votre navigateur après le chargement de la page. Les publicités ou analyses peuvent utiliser des cookies — voir la politique de confidentialité. Clavier : Ctrl ou ⌘ + Entrée copie. Échap efface. Pages dédiées : Casse de phrase, Casse de titre, Majuscule par mot, cAsSe aLtErNéE, InVeRsE CaSe, ou le hub convertisseurs de casse.

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Popular tools

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.

Tous les outils

Recherchez chaque formateur, encodeur et convertisseur sur Case Modify. Chaque outil s’exécute dans votre navigateur.

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 titles the right way: major words capitalized, minor words handled correctly.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.

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 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.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.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, one character per line, for distinctive social bios and posters.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.

À propos de Case Modify

Case Modify est un convertisseur de casse gratuit et une collection d’outils texte, code et conversion dans le navigateur. Collez du texte sur l’accueil pour changer la casse instantanément, ou ouvrez une page dédiée pour une règle appliquée de façon cohérente.

Qu'est-ce qu'un convertisseur de casse ?

Un convertisseur de casse change les majuscules sans réécrire le texte. Casse de phrase et title case suivent les règles éditoriales ; camelCase, PascalCase, snake_case et kebab-case servent au code, aux URLs et à la config.

La casse capitalisée met une majuscule à chaque mot — ce n’est pas le title case, qui laisse souvent les mots courts en minuscules au milieu.

Pourquoi Case Modify ?

Gratuit — pas de compte pour les convertisseurs standard.
Coller, convertir, copier — tout dans le navigateur.
Une page par règle, avec guide dédié.
Articles sur le title case, le nommage et le JSON.

Convertisseurs de casse populaires

Page dédiée pour une règle de capitalisation, ou parcourez le hub des convertisseurs de casse pour tous les styles au même endroit.

Title Case

Capitaliser titres et en-têtes d’articles selon les règles anglaises courantes du title case.

This Is an Example of Title Case.

Casse de phrase

Premier mot de chaque phrase en majuscule — standard pour le corps de texte et l’interface.

This is an example of sentence case.

Majuscules

Convertir en MAJUSCULES pour étiquettes, emphase ou saisie accidentelle en minuscules.

THIS IS AN EXAMPLE OF UPPER CASE.

Minuscules

Normaliser un texte criard ou préparer slugs et identifiants avant une autre conversion.

this is an example of lower case.

camelCase

Noms de variables JavaScript : premier mot en minuscule, suivants capitalisés.

helloWorldExample

PascalCase

Noms de classes et composants avec chaque mot capitalisé — React, C# et types TypeScript.

HelloWorldExample

snake_case

Noms Python et bases de données avec traits de soulignement entre les mots.

hello_world_example

kebab-case

Slugs d’URL, classes CSS et drapeaux CLI avec tirets entre les mots.

hello-world-example

Parcourir par catégorie

Questions fréquentes

Case Modify envoie-t-il le texte que je colle ?

Les convertisseurs, styliseurs Unicode, formateurs et conversions d’image s’exécutent dans ce navigateur après le chargement. Aucun compte n’est requis pour un brouillon.

Quelle différence entre title case et casse capitalisée ?

La casse capitalisée met une majuscule au début de chaque mot. Le title case laisse souvent les mots courts comme « et » ou « le » en minuscules au milieu d’un titre. title case · casse capitalisée

Quelle casse utiliser dans le code ?

Les variables JavaScript utilisent souvent camelCase, les composants React PascalCase, Python et SQL snake_case, les slugs d’URL kebab-case. camelCase, PascalCase, snake_case · kebab-case