Choose uppercase, lowercase, sentence case, title case or toggle case. Conversion replaces the text in the input box; keep a copy of your original.
Paste text, then select the required conversion button. The result replaces the current input and updates the word and character statistics. Copy copies the current text; Reset clears it. There is no dedicated restore-original button, so save important source text before converting.
Uppercase and lowercase are useful for normalizing a short label or repairing a passage typed with Caps Lock. Sentence case and Title Case use additional pattern rules; inspect their results before publishing a heading or name.
For “hello WORLD”, Uppercase gives “HELLO WORLD”, Lowercase gives “hello world”, Title Case gives “Hello World”, Sentence case gives “Hello world”, and Toggle case gives “HELLO world”. Toggle changes each cased character according to its current case rather than alternating by position.
Sentence case first lowercases the passage, then capitalizes recognized starts after the beginning or sentence-ending punctuation. Title Case also lowercases first, then capitalizes basic word starts. Neither option preserves acronyms such as NASA automatically.
These are pattern-based conversions, not grammar corrections. Title Case does not apply an editorial list of small words, and its basic word-boundary pattern can capitalize letters after apostrophes or hyphens. Sentence case may treat an abbreviation’s period as a sentence boundary.
Uppercase and lowercase use JavaScript’s default Unicode mappings rather than a selected locale. Sentence and title modes rely on basic word-character patterns, so results for accented words and non-English text need particular care. Scripts without case, such as Devanagari, are not converted into capitals.
Words are counted as non-empty items separated by whitespace. Characters use JavaScript string length, including spaces and line breaks; some visible symbols use more than one unit. A conversion can change the length when a letter maps to multiple characters.
Copy depends on your browser allowing clipboard access. If copying is blocked, select the text manually. When you have checked the final spelling and punctuation, paste the result into its destination and confirm that its formatting still suits the task.
The case converter provides several transformations that serve different tasks. Uppercase and lowercase normalize the entire passage, while sentence and title modes add pattern-based initial capitals after lowercasing. Toggle case reverses the existing case of each letter. Choose the behavior you actually need before selecting a button, because every conversion acts on the current contents of the input box rather than an untouched copy saved elsewhere by the tool.
For a passage with intentional acronyms, retain an original alongside the working version. Repeatedly trying different modes can lose the original distinctions between proper names, ordinary words and abbreviations. You can normalize a draft label quickly, but restoring a long document’s specialist capitalization may require manual work. Start with a representative sentence containing the same kinds of names, punctuation and mixed-language text that appear in the full passage.
Sentence case lowercases the input, then uppercases basic word characters at the beginning or after periods, question marks and exclamation marks, with optional intervening whitespace. It does not decide whether a period belongs to a sentence ending or an abbreviation. A form such as “dr. smith” can therefore capitalize the name after the period even though the intended structure is a title followed by a name.
Opening punctuation also matters. A quote or bracket between an ending mark and a word can prevent the expected match, while punctuation without a separating space can still match the mode’s pattern. Review quoted speech, initials and decimal-like expressions rather than assuming the mode recognizes grammar. After conversion, restore proper nouns and the pronoun “I” where required, because the initial lowercasing step does not preserve those distinctions inside ordinary sentences.
The Title Case button uses a basic word-boundary pattern after lowercasing. It is not a style engine for newspaper headlines, academic titles or a particular publication. Small words are capitalized too, and a letter after an apostrophe or hyphen can be treated as another word start. An input such as “don't stop” can therefore produce a form you would not use in an edited headline.
If a style guide specifies how to handle conjunctions, prepositions, brands or subtitles, apply those decisions in your final review. For a short list of labels, the automatic result may be a useful starting point. For names and published titles, compare against the source rather than assuming that consistency means correctness. The related Capitalize Each Word tool uses a different rule and preserves remaining internal capitals, so its output is not interchangeable with this mode.
Uppercase and lowercase use JavaScript’s default character mappings. Digits and most punctuation remain unchanged because they have no case, while scripts with case can change. The interface does not provide a locale selector for language-specific expectations. Some letters map to multiple characters, so a case conversion can alter string length even when no ordinary word or space was added intentionally. Check identifiers and multilingual names especially carefully.
Toggle mode is based on each character’s current case; it does not create a pattern by alternating positions. “AbC” becomes “aBc”, while uncased characters generally remain unchanged. Applying toggle twice is not a guaranteed restoration method for every Unicode mapping, particularly when an earlier conversion expanded a character. Keep an original copy whenever exact recovery matters instead of depending on a second transformation to reconstruct information that the first one may have changed.
The word figure splits the current text at whitespace, and the character figure measures JavaScript string length. Neither value checks spelling, grammar or whether the chosen case is suitable for the reader. Emoji and combined characters can contribute several units to the length. When you compare a before-and-after count, remember that a case mapping itself can change the number, rather than assuming any difference must come from lost text.
Spaces, tabs and newlines generally stay in place through these conversion functions, but the destination editor can handle pasted text differently. After copying, check the document where the result will actually be used. A heading that fits a text field may still wrap awkwardly in the final font. Case conversion and layout review solve different problems, so inspect both before publishing a prominent label, title or navigation item.
If the result is wrong for your task, return to the source copy rather than applying a chain of additional modes and hoping to restore every original distinction. Conversions that lowercase names or expand characters can discard information about the previous form. Reset clears the current input; it is not an undo operation. Keep intermediate drafts outside the tool when you need a record of what changed between editorial versions.
For a reliable workflow, select the smallest passage that needs normalization, convert it, then restore any required exceptions such as acronyms. Use Copy if the browser permits clipboard access, otherwise select the text manually. Check the pasted result and save it in your normal editor. This keeps a mechanical formatting step from spreading unintended case changes into passwords, case-sensitive paths, source code or other material that should not have been included in the conversion.
No. It reverses each letter’s existing case. “AbC” becomes “aBc”.
No. The passage is lowercased first, so you need to restore acronyms and proper names manually.
No. It uses a word-start pattern and does not apply publication-specific rules for short words.
The tool has no dedicated restore-original control. Keep an original copy before changing the text.
Yes. Each mode transforms the current input in place and refreshes its word and character totals. Save the original before experimenting with several modes.
The conversion functions do not intentionally normalize whitespace. Review the destination after pasting, since its own formatting rules may differ.
It uses a basic word-boundary pattern rather than a dictionary or style guide. Apostrophes and other punctuation can create boundaries that need manual correction.
Yes. Some Unicode case mappings expand a character into multiple characters. The displayed length measures the current JavaScript string.
No. Reset clears the current input and statistics. The tool does not retain a dedicated original-text version for recovery.
Clipboard access depends on browser permissions and context. If access is unavailable, select the current text and copy it manually.