Convert text to uppercase, lowercase, capitalize or title case instantly
The uppercase and lowercase converter is an essential tool for quickly adjusting the capitalization format of any text. Supports multiple formats including complete UPPERCASE, total lowercase, sentence capitalization, and title format. Ideal for correcting incorrectly formatted text, preparing content for different platforms, or standardizing writing style in professional documents.
The tool instantly transforms your text by applying specific capitalization rules according to the selected format:
Enter or paste the text you want to convert into the input area.
Select the desired capitalization format: UPPERCASE, lowercase, Capitalize sentences, or Title Format.
Click 'Process' and the text transforms instantly according to the chosen format.
Copy the result or download it as a text file to use in your projects.
Uses optimized native JavaScript methods (toUpperCase/toLowerCase) that correctly handle special characters, accents, and symbols in multiple languages.
Identifies the start of each sentence using periods, question marks, and exclamation points, applying uppercase to the first letter while keeping the rest lowercase.
Capitalizes the first letter of each word, except short articles and prepositions, following professional editorial conventions.
This tool solves multiple text formatting needs:
Correcting text copied from sources using excessive uppercase or inconsistent formatting, like social media messages or informal emails.
Standardizing article titles, book chapters, or section headers according to specific style guides.
Preparing text for databases requiring consistent formatting in text fields like names, addresses, or descriptions.
Converting UPPERCASE shouting to normal, more professional text for corporate communications or official documents.
For professional titles, use the 'Title' format but manually review important words that should always be capitalized like proper nouns.
If you accidentally converted everything to lowercase, use 'Capitalize sentences' to quickly restore a readable format.
For social media text, avoid excessive use of UPPERCASE as it's perceived as shouting or spam.
Combine with other text tools to clean extra spaces before applying the desired capitalization format.
No, total lowercase conversion affects all text. If you need to preserve proper nouns, use 'Capitalize sentences' or manually review the result.
Yes, the tool correctly handles letters with accents (á, é, í, ó, ú), dieresis (ü), and the letter ñ, in both uppercase and lowercase.
'Capitalize sentences' only capitalizes at the start of each sentence. 'Title Format' capitalizes the first letter of each word (with exceptions).
The tool converts all entered text. If you need to convert only a section, copy only that part to the input area.
Absolutely. All processing is done locally in your browser, so your text is never sent to any server. Your data remains completely private and secure.
There are no artificial limits imposed by our tool. The only limit is your browser's processing capacity, which can generally handle very large documents without problems.
No, all our text tools are completely free and require no registration, login, or provision of personal information.