Text Capitalizer and Case Converter
Capitalize text online or convert case to sentence case, title case, uppercase, and lowercase. Paste your text, choose a format, and copy the result.
All text capitalization and case transformations execute entirely in your local browser memory. Your text is never transmitted over the network or saved on remote servers.
Convert and Fix Text Capitalization Online
Inconsistent capitalization is a frequent issue when copying notes, receiving unformatted drafts, or recovering from accidental Caps Lock typing. ToolJiffy’s Text Capitalizer and Case Converter gives you instant control over letter cases with five distinct formatting modes.
Five Practical Capitalization Modes
Select the appropriate formatting mode for your publishing or editing task:
- Sentence case: Capitalizes the initial letter of each sentence after punctuation marks (
.,!,?), keeping subsequent prose letters lowercase. - Title Case: Capitalizes primary words while preserving lowercase for common short prepositions, conjunctions, and articles (e.g. The Art of War).
- Capitalize Every Word: Capitalizes the first letter of each word unconditionally (e.g. for names, addresses, or data fields).
- UPPERCASE: Converts every alphabetical character to capital letters.
- lowercase: Converts all characters to lower case.
Related Text Editing Tools
Combine your capitalization workflow with our other text formatting utilities:
- Case Converter — Convert between camelCase, snake_case, kebab-case, and standard text cases.
- Uppercase Converter — Dedicated tool to convert entire blocks of text to capital letters.
- Lowercase Converter — Quickly normalize text to all lowercase characters.
- Title Case Converter — Transform article headlines and book titles into proper title case.
- Text Cleaner — Strip extra spaces, unwanted symbols, and broken line breaks.
- Word Counter — Analyze word count, character density, and reading time.
If you retype or edit a lot of capitalized headings and copy by hand, test your typing speed and accuracy on TypingProo — Free Online Typing Speed Test.
How to Capitalize Text and Convert Case
- Paste or Enter Text: Type or paste the text you want to format into the editor box above.
- Select a Case Format: Choose your desired format from the dropdown: Sentence case, Title Case, Capitalize Every Word, UPPERCASE, or lowercase.
- Convert and Copy: Click Convert to apply the transformation, then copy your clean text to your clipboard or download it as a .txt file.
Supported Inputs & Output Formats
| Type | Format | Details & Handling |
|---|---|---|
| Input | Plain Text | Any text, paragraphs, headings, lists, or articles requiring capitalization correction. |
| Output | Formatted Text (.txt) | Clean converted text formatted according to your selected case mode, available to copy or download. |
Common Practical Use Cases
- Fix ACCIDENTAL CAPS LOCK: Convert entire paragraphs typed in all-caps back into clean, readable sentence case.
- Format Headings & Titles: Apply title case to blog post titles, newsletter headings, and presentation slides.
- Standardize Lists & Names: Capitalize each word in contact lists, spreadsheet columns, and product catalogues.
Important Limitations & Technical Boundaries
- Generic Title Case Rules: Uses a general-purpose title case algorithm with a standard minor-word exclusion list. It does not provide specialized rule toggles for AP, Chicago, APA, or MLA style guides.
- Proper Nouns in Sentence Case: Sentence case capitalizes only sentence starters; mid-sentence acronyms and proper nouns may need manual verification if input was all-lowercase.
- Client-Side In-Memory: All transformations run in your browser session without storing history or sending data to a backend.
Frequently Asked Questions
What capitalization modes does the Text Capitalizer support?
It supports five modes: Sentence case (capitalizes the first letter of each sentence), Title Case (capitalizes major words while keeping common minor words lowercase), Capitalize Every Word (capitalizes the first letter of all words), UPPERCASE (converts all letters to upper case), and lowercase (converts all letters to lower case).
How does Title Case differ from Capitalize Every Word mode?
Title Case keeps common minor words (such as "in", "on", "at", "and", "or", "the", "a") in lowercase unless they are the first or last word of a line. Capitalize Every Word capitalizes the initial letter of every single word without exception.
Can this tool fix all-caps text into normal sentence case?
Yes. Paste your all-caps text, select Sentence case, and click Convert. The tool converts the text to lowercase and capitalizes the first letter of each sentence following periods, exclamation marks, or question marks.
Does Title Case follow a specific style guide like AP or Chicago?
The tool uses a practical general-purpose title case algorithm that capitalizes major words and lowercases standard short conjunctions, articles, and prepositions. It does not provide individual toggle switches for specific publication stylebooks.
Is my text processed securely on my device?
Yes. All text conversions execute 100% locally in your web browser using JavaScript string methods. No text is ever uploaded to a server or saved remotely.
Can I process multiple lines or paragraphs at once?
Yes. The capitalizer processes multi-line text and multiple paragraphs simultaneously, preserving your line breaks and spacing.