Case Converter Free - Uppercase, Lowercase, Title

Convert text to uppercase, lowercase, title case, and more.

If this tool isn’t working as expected, please take a screenshot of the error and report the problem here so we can investigate and improve it.

About this tool

Casing problems show up constantly - text pasted from an all-caps source, a heading typed in the wrong case, or a caption that needs a quick style change. This case converter applies six casing transformations instantly: UPPERCASE, lowercase, Capitalized Case (every word capitalized), Sentence case (only the start of each sentence capitalized), Title Case (every word capitalized, split on spaces), and aLtErNaTiNg CaSe.

Each mode is a straightforward, mechanical text transformation - there's no dictionary of acronyms, proper nouns, or style-guide rules (like keeping "a," "the," or "of" lowercase) behind any of them, so double-check names, acronyms, and brand terms after converting.

A case converter changes the capitalization pattern of text without changing the words themselves. This tool offers six modes - UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, and aLtErNaTiNg CaSe - useful for writers fixing inconsistent heading styles, anyone cleaning up text pasted from a source with the wrong casing, or generating novelty alternating-case text.

How to Use Case Converter

Type or Paste

Enter any text you want to convert.

→

Choose Mode

Select uppercase, lowercase, title case, etc.

→

Process Text

Transforms your text based on selection.

→

Copy Output

Copy converted text or process it further.

Common Workflows

Type or Paste Your Text

Enter or paste the text you want to change the casing of.

Choose a Case Mode

Click one of the six mode buttons - UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, or aLtErNaTiNg CaSe.

Review the Result

The textarea updates in place with the converted text - check names, acronyms, and brand terms, since none of the modes protect these automatically.

Copy or Convert Again

Copy the result to your clipboard, or click another mode button to apply a different case to the current text.

Best For

Converts text between UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, and aLtErNaTiNg CaSe.
Processes any amount of pasted text instantly, entirely in your browser - nothing is uploaded to a server.
No login, no signup - case converter online free for writing and general text formatting cleanup.

Examples

How Title Case, Capitalized Case, and Sentence case actually differ

Input

"the NASA report on well-known climate data"

Result

Capitalized Case: "The Nasa Report On Well-Known Climate Data". Title Case: "The Nasa Report On Well-known Climate Data". Sentence case: "The nasa report on well-known climate data".

Capitalized Case capitalizes both halves of a hyphenated word ("Well-Known"), while Title Case only capitalizes the first letter of each space-separated word, leaving the second half of a hyphenated word lowercase ("Well-known"). Neither mode keeps "the" or "on" lowercase, and both mangle the acronym "NASA" into "Nasa" since there's no acronym-detection logic - Sentence case leaves it as "nasa" entirely, since it only capitalizes the very first letter of each sentence.

Use Cases

Fixing text pasted in all caps

Convert ALL CAPS text copied from an old document or system into lowercase or Sentence case for normal reading.

Standardizing headline casing across a document

Apply Title Case or Capitalized Case consistently across multiple headings for a uniform look - then manually fix any acronyms or names that got mangled.

Correcting accidental Caps Lock text

Convert text typed with Caps Lock on back to Sentence case or lowercase without retyping it.

Creating novelty aLtErNaTiNg CaSe text

Use the alternating case mode for informal, meme-style, or attention-grabbing text.

Common Mistakes

Problem

Expecting Title Case to keep articles and short prepositions lowercase

Solution

This tool's Title Case mode capitalizes every word, including "a," "the," "of," and "on" - it doesn't follow AP, Chicago, or any other style guide's capitalization exceptions.

Problem

Assuming acronyms and proper nouns are protected

Solution

None of the six modes detect acronyms or proper nouns - a word like "NASA" or "iPhone" will be capitalized or lowercased mechanically along with everything else, and will usually need manual correction afterward.

Problem

Looking for camelCase, snake_case, or kebab-case conversion

Solution

This tool doesn't include programming naming-convention modes - it only offers the six general text-casing modes listed above.

Problem

Expecting Capitalized Case and Title Case to always produce identical results

Solution

They differ on hyphenated words: Capitalized Case capitalizes both sides of a hyphen, while Title Case (which splits only on spaces) leaves the second half lowercase.

Tips & Best Practices

Manually recheck acronyms and proper nouns after converting

Since no mode protects acronyms or names, scan the result for words like brand names or abbreviations that need manual re-capitalizing.

Use Sentence case for pasted all-caps paragraphs

Sentence case only capitalizes the first letter of each sentence, which usually reads more naturally for body text than Capitalized Case or Title Case.

Try Capitalized Case for hyphenated headline words

If a heading includes a hyphenated term you want fully capitalized (like "Well-Known"), Capitalized Case handles both halves - Title Case only capitalizes the first half.

Convert in stages if you need a specific style-guide result

Since there's no AP/Chicago-style mode, apply Title Case or Capitalized Case first, then manually lowercase the specific articles or prepositions your style guide requires.

Limitations

Exactly six modes - no developer case formats

The tool offers UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, and aLtErNaTiNg CaSe only. It doesn't generate camelCase, snake_case, kebab-case, or PascalCase for use in code.

No style-guide-aware title casing

Title Case and Capitalized Case both capitalize every word - neither follows AP, Chicago, APA, or MLA rules for keeping short articles and prepositions lowercase.

No acronym or proper-noun protection

Acronyms and proper nouns are capitalized or lowercased mechanically along with every other word, so results usually need a manual pass for names and abbreviations.

No download button

Converted text can be copied to the clipboard, but there's no option to download it as a file directly from this tool.

Title Case and Capitalized Case handle hyphens differently

Capitalized Case capitalizes each half of a hyphenated word; Title Case only capitalizes the first letter of the whole space-separated token, leaving text after a hyphen lowercase.

Comparisons

Case Converter vs. a Programming Naming-Convention Tool

This tool handles general text casing; it doesn't generate code-naming formats.

	This Tool (Case Converter)	A Developer Naming-Convention Tool
Modes offered	UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, aLtErNaTiNg CaSe	camelCase, snake_case, kebab-case, PascalCase, and similar code-naming formats
Typical audience	Writers and editors fixing general text casing	Developers naming variables, files, or CSS classes
Acronym/style handling	None - purely mechanical per-character or per-word rules	Varies by tool - some support acronym exceptions

Which should you use?

Use this tool for everyday writing and text-casing cleanup; if you need camelCase, snake_case, or kebab-case for code, you'll need a dedicated naming-convention converter, since this tool doesn't generate those formats.

FAQs

The most common question is which mode to use for headings, and whether the tool follows a specific style guide (AP, Chicago, etc.) when capitalizing. It doesn't - both Title Case and Capitalized Case capitalize every word, including articles and short prepositions, with no style-guide exceptions. The FAQ below covers exactly what each mode does and where mechanical capitalization can produce a result you'll want to touch up by hand.

How many case conversion modes does this tool have?

Six: UPPERCASE, lowercase, Capitalized Case, Sentence case, Title Case, and aLtErNaTiNg CaSe. It doesn't include camelCase, snake_case, kebab-case, or other programming naming-convention formats.

Does Title Case follow AP, Chicago, or another style guide?

No. This tool's Title Case mode capitalizes every word, including articles and short prepositions like "a," "the," and "of" - there's no style-guide logic that keeps specific short words lowercase.

What's the difference between Title Case and Capitalized Case?

For most text they produce the same result, but they handle hyphenated words differently: Capitalized Case capitalizes both halves of a hyphenated word ("Well-Known"), while Title Case only capitalizes the first letter of each space-separated word, leaving the half after a hyphen lowercase ("Well-known").

Will this protect acronyms or proper nouns like "NASA" or brand names?

No. None of the six modes detect acronyms or proper nouns - a word like "NASA" gets capitalized or lowercased mechanically along with every other word, so double-check names and acronyms after converting.