Kefiw

Archived noindex page. Kefiw's public focus is Property decision help.

Archived page

This older Kefiw page is kept for reference, marked noindex, and removed from the primary sitemap. The current Kefiw experience is focused on property decisions: cost, quotes, damage, buying, selling, owning, and packets.

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Case Converter

Swap between UPPER, lower, Title, and sentence case cleanly.

Use the Case Converter when text has the right words but the wrong capitalization or identifier style. Paste a phrase, headline, tag list, or code label, then choose one of eight modes. The tool is a fast string transformer, not a style-guide editor: Title Case capitalizes each word, sentence case is punctuation-based, and identifier modes split on non-alphanumeric characters.

Part of: Text Cleanup Tools

Enter letters, words, or text below
Fields marked optional can be skipped; results update as you type
Presets

How to use

  1. Paste or type text into the input area.
  2. Choose the case style: uppercase, lowercase, Title Case, sentence case, camelCase, snake_case, kebab-case, or CONSTANT_CASE.
  3. Review the converted output and the length-change summary.
  4. Copy the result into your draft, list, filename, or code context.
  5. For formal headlines, review style-guide exceptions manually.

Examples

Headline cleanup
“summer reading list” can become “Summer Reading List” for a simple title-style heading.
Code identifier
“Customer Status Label” can become “customerStatusLabel,” “customer_status_label,” or “customer-status-label.”
List normalization
Convert a pasted tag list to lowercase before sorting or deduping it.

What users are actually trying to do

  • ▸ Fix all-caps or all-lowercase pasted text.
  • ▸ Prepare simple headlines, labels, or section titles.
  • ▸ Normalize tags before sorting or removing duplicates.
  • ▸ Convert human-readable labels into camelCase, snake_case, kebab-case, or CONSTANT_CASE.
  • ▸ Clean inconsistent capitalization in short lists.

Common mistakes

  • ! Expecting AP, Chicago, APA, or MLA title capitalization.
  • ! Using identifier modes on prose that must preserve apostrophes or accents.
  • ! Expecting sentence case to understand proper nouns and acronyms.
  • ! Assuming camelCase will preserve existing camelCase boundaries.
  • ! Forgetting to review formal names after automated conversion.

Before you use the result

Word tools can narrow options, clean text, or show patterns, but they do not know the rules of every puzzle, class assignment, publication style, or house dictionary. Check the result against the context where you plan to use it.

For learning, review why a result matched instead of copying the first answer. That keeps the tool useful as practice, not only lookup.

Limitations

  • · No AP, Chicago, APA, MLA, or other stylebook-specific title case.
  • · Title and sentence capitalization focus on ASCII first letters.
  • · Identifier modes split on non-alphanumeric characters and may drop accents, apostrophes, or hyphens.
  • · The tool does not understand proper nouns or acronyms.
  • · Existing camelCase boundaries are not preserved as separate words.

Next up

Case fixed? Flip the text order next.Reverse Text → Normalized case? Now sort the list cleanly.Sort Lines →

Frequently asked questions

› What case styles does the case converter support? Definition

The case converter supports eight modes: uppercase, lowercase, Title Case, sentence case, camelCase, snake_case, kebab-case, and CONSTANT_CASE. Each mode transforms the pasted text immediately. The identifier modes are useful for labels, filenames, CSS-like tokens, and simple programming names.

› Is the Title Case mode AP, Chicago, APA, or MLA style? Comparison

No, the Title Case mode capitalizes the first letter of each word rather than applying stylebook exceptions. Small words such as “a,” “of,” and “the” are not automatically handled by AP or Chicago rules. Formal publication headlines still need manual review.

› How does camelCase or snake_case conversion work? How-to

Identifier-style conversion trims the text, splits it on non-alphanumeric runs, and joins the remaining tokens. That makes it fast for simple labels, but apostrophes, hyphens, and accented characters can be removed or changed in ways that do not round-trip the original text.

› Can the case converter handle multiple lines? Edge case

Yes, the converter accepts multi-line input and returns converted output in the same page flow. Sentence case still depends on punctuation rather than every line break, so a new line may not automatically start with a capital letter unless punctuation creates a new sentence.

› Why did punctuation, accents, or hyphens disappear? Troubleshooting

Punctuation and some non-ASCII characters can disappear in identifier modes such as camelCase, snake_case, kebab-case, and CONSTANT_CASE. Those modes split on non-alphanumeric characters, then rebuild a clean identifier. Use uppercase, lowercase, Title Case, or sentence case when preserving prose punctuation matters.

› Does this case converter keep my text private? Trust & accuracy

The case conversion runs in the browser, so ordinary transformations do not need server processing. That keeps quick formatting tasks lightweight. Sensitive text still deserves caution, especially when browser extensions, shared devices, or workplace policies affect what can be pasted.

Tips & related reading

See the Text Cleanup Tools hub →

Tips & how-tos

Relevant links

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