Case Converter — Uppercase, Lowercase & More
Convert uppercase to lowercase, build Title Case headlines, or shape camelCase identifiers — then copy or download instantly. Processing stays in your browser.
Runs locally in your browser — text is not uploaded.
Conversion mode
UPPERCASE — Convert letters to uppercase
Example: Hello World Example → HELLO WORLD EXAMPLE
Everyday text
Preserves spaces and line breaksDeveloper formats
Rebuilds tokens into identifiersShortcuts: Alt+C copy output · Alt+S load sample
Original text
Paste a paragraph, headline, or identifier — output updates as you type.
Converted output
UPPERCASE
Case conversion guide
Practical notes for everyday text and developer formats.
What is a Case Converter?
A case converter changes letter capitalization. Use it to fix caps lock, normalize pasted text, prepare headlines, or build code-style identifiers without retyping.
How to change uppercase to lowercase
Paste ALL CAPS text into Original text, choose lowercase, then Copy. Example: HELLO WORLD EXAMPLE becomes hello world example.
How to convert lowercase to uppercase
Select UPPERCASE and type or paste your draft. Example: Hello World Example becomes HELLO WORLD EXAMPLE.
Types of text case
Live examples for “Hello World Example” using this page’s converter:
| Mode | Group | Result |
|---|---|---|
| UPPERCASE | Everyday text | HELLO WORLD EXAMPLE |
| lowercase | Everyday text | hello world example |
| Sentence case | Everyday text | Hello world example |
| Title Case | Everyday text | Hello World Example |
| Capitalize Each Word | Everyday text | Hello World Example |
| aLtErNaTiNg cAsE | Everyday text | hElLo WoRlD eXaMpLe |
| iNVERSE cASE | Everyday text | hELLO wORLD eXAMPLE |
| camelCase | Developer | helloWorldExample |
| PascalCase | Developer | HelloWorldExample |
| snake_case | Developer | hello_world_example |
| kebab-case | Developer | hello-world-example |
Sentence case vs Title Case
Sentence case reads like prose and capitalizes after sentence endings (with a short abbreviation list for Dr., Mr., and similar). This Case Converter’s Title Case capitalizes major words for everyday headlines using WordMelo’s general policy. For sourced APA 7, MLA 9, Chicago 18, and AP composition-title capitalization with side-by-side comparison, use the Title Case Converter.
Programming case conversions
camelCase, PascalCase, snake_case, and kebab-case rebuild phrase text into identifier tokens. Spaces and many punctuation marks become separators — formatting is intentionally lossy.
Does case conversion preserve formatting?
Everyday text modes preserve whitespace. Developer formats change word and character counts because separators are rewritten. See the note under Converted output when counts differ.
How Unicode case conversion works
- Casing uses the en-US locale (US English) via JavaScript locale string methods.
- Ordinary text modes (upper, lower, sentence, title, capitalize, alternating, inverse) preserve spaces, tabs, and line breaks.
- Programming modes (camelCase, PascalCase, snake_case, kebab-case) intentionally rewrite whitespace and separators into identifier tokens.
- Sentence case lowercases the input first, then capitalizes letters after `!`, `?`, newlines, or periods that are not in a short abbreviation list (Mr., Dr., etc.). Unusual abbreviations can still create false sentence starts.
- Title Case follows a WordMelo general policy: capitalize major words and hyphen segments; keep a short list of small words lowercase unless first or last. It is not AP, APA, or Chicago Style.
- Alternating case toggles only on letters, starting with lowercase; punctuation and digits do not shift the alternation.
- Caseless scripts (for example many Arabic or Devanagari letters) are left unchanged by inverse/alternating where no upper/lower pair exists.
- Emoji, ZWJ sequences, and combining marks are preserved as written; conversion never strips them.
After you normalize case, check length with the Word Counter, style a short bio with the Fancy Text Generator, or gather prompts with the Random Word Generator.
Frequently asked questions
Is the Case Converter free?
Yes. WordMelo’s Case Converter is free to use in your browser and does not require an account.
How do I convert uppercase to lowercase?
Paste ALL CAPS text into Original text, choose lowercase, then Copy or Download. Mode changes always reprocess your original input.
How do I convert lowercase to uppercase?
Select UPPERCASE and paste or type your text. The Converted output panel updates live.
Does case conversion preserve formatting?
Everyday text modes keep spaces, tabs, and line breaks. Developer formats (camelCase, PascalCase, snake_case, kebab-case) intentionally rewrite separators into identifiers.
What is the difference between sentence case and Title Case?
Sentence case capitalizes sentence starts. This page’s Title Case uses WordMelo’s general headline policy. For APA, MLA, Chicago, and AP composition-title rules with style comparison, open the Title Case Converter.
Can I convert text into camelCase or snake_case?
Yes. Open Developer formats and choose camelCase, PascalCase, snake_case, or kebab-case. These modes tokenize on spaces, hyphens, underscores, and camel boundaries.
Is my text uploaded to a server?
No. Conversion runs locally in your browser. Drafts are not uploaded to WordMelo for casing.
Does it support Unicode characters?
Accented Latin letters follow the en-US locale. Emoji are preserved. Caseless scripts may stay unchanged for inverse or alternating modes.
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