What is a text case converter?

A text case converter is an online tool that transforms text between different letter cases such as uppercase (ALL CAPS), lowercase (all small letters), title case (First Letter Of Each Word Capitalized), and sentence case (First letter of each sentence capitalized).

How do I convert text to uppercase?

Simply paste your text into the input field and click the 'UPPER CASE' button. Your text will instantly be converted to all capital letters. You can then copy the result or download it as a text file.

Is this text case converter free to use?

Yes, the Case Converter on BosConvertPro is completely free to use. There are no limits on the amount of text you can convert, no registration required, and no hidden fees.

Title case is a capitalization style where the first letter of each major word is capitalized, while minor words like 'a', 'an', 'the', 'and', 'or', 'but', etc. remain lowercase unless they are the first word.

Can I upload a text file to convert?

Yes, you can upload .txt files directly to the converter. Click the upload button, select your file, and the contents will be loaded into the input field for conversion.

Case Converter | Uppercase, Lowercase & Title Case

Text Editor

Type or paste your text below, then select a conversion option

Input Text

0Characters

0Words

0Sentences

1Lines

Instant Conversion

Convert your text instantly with a single click. No waiting, no processing time.

Copy & Download

Easily copy your converted text or download it as a file for later use.

Upload Files

Upload text files directly and convert them with ease. Supports .txt format.

About Text Case Converter

This is a free online tool that helps you convert text between different letter cases. Whether you accidentally left your caps lock on, need to format titles correctly, or want to create unique text effects, our converter has you covered.

Sentence case

Capitalizes the first letter of each sentence

lower case

Converts all letters to lowercase

UPPER CASE

Converts all letters to uppercase

Capitalized Case

Capitalizes the first letter of each word

aLtErNaTiNg cAsE

Alternates between lower and upper case

Title Case

Capitalizes words following standard title case rules

InVeRsE cAsE

Inverts the case of each letter

The Ultimate Case Converter & Case Conversion Tool

Welcome to the most comprehensive case converter and case conversion tool on the web. Whether you accidentally left your caps lock on and need to fix uppercase letters back to normal, or you're looking for a title case converter to format headlines perfectly, or a sentence case converter to apply standard grammar — our tool handles everything in seconds. Simply type or paste your text into the text area, pick the capitalization style you need, and watch your text transform instantly. No downloads, no sign-up, completely free.

How to Use the Case Converter

Paste Text into the Text Area

Type or paste your text into the text area below. You can also upload a .txt file directly — the contents load instantly into the editor.

Choose a Capitalization Style

Select the capitalization style you need: UPPER CASE, lower case, Title Case Converter, Sentence Case Converter, or any of the advanced text effects.

Simply Copy or Download

Simply copy the converted text to your clipboard with one click, or download it as a .txt file to use wherever you need.

Available Text Cases Explained

Upper Case (ALL CAPS)

Converts every character to an upper case letter. Useful for headlines, acronyms, legal text, and fixing passages typed with caps lock off. Every lowercase letter becomes a bold, capital upper case letter instantly.

Lower Case

Converts every letter to lowercase letters. Perfect for normalizing text inputs, email addresses, code identifiers, or fixing entire paragraphs accidentally typed in ALL CAPS. The result contains only clean, uniform lowercase letters with no capitals.

Sentence Case Converter

Our sentence case converter capitalizes only the first letter of each sentence and keeps everything else in lowercase letters. This is the standard grammatical capitalization style for most writing. Ideal for fixing blocks of text where caps lock was accidentally left on.

Title Case Converter

Our title case converter applies the standard capitalization style for headlines: the first letter of major words is capitalized while minor words like 'a', 'an', 'the', 'and', 'of', 'in' stay lowercase. This is the correct title case format used for blog titles, article headings, and book names.

Alternating Case

Switches between lowercase letters and upper case letters for every single character — producing a distinctive aLtErNaTiNg sTyLe. Often used for meme text, social media posts, or playful stylistic choices.

Inverse Case

Flips the capitalization style of every letter: uppercase letters become lowercase letters and vice versa. Excellent for correcting text typed with caps lock reversed, or creating an eye-catching inverted effect.

Frequently Asked Questions