Uppercase to Lowercase Converter

What is an uppercase to lowercase converter?

An uppercase to lowercase converter is a free online tool that changes capital letters into small letters. Paste text that was typed with caps lock on, copied from a document written in capitals, or exported from a database, and the converter turns it into clean lowercase text in an instant. It also works the other way around, so you can switch lowercase text into uppercase with one click.

Our tool shows the converted text next to your original, updates as you type and lets you copy or download the result. An optional setting capitalizes the first letter of every sentence, which is handy when you want readable text rather than all lowercase. Everything runs in your browser, so your text is never uploaded to a server.

Features of this lowercase converter

• Two directions: Switch between UPPERCASE to lowercase and lowercase to UPPERCASE with one click.
• Live result: The converted text updates as you type or paste, so there is no convert button to hunt for.
• Sentence capitalization: Turn everything into lowercase, then capitalize the first letter of each sentence automatically.
• Copy, download and reuse: Copy the result, save it as a text file, or use the result as the new input for another change.
• Word and character count: See the number of words and characters for both your original text and the result.
• Free and private: No signup, no limits and nothing is sent to a server.

When do you need to change uppercase to lowercase?

Changing capital letters to small letters solves many everyday problems:

• Fixing caps lock mistakes: Text typed by accident with caps lock on can be corrected in seconds, without retyping it.
• Cleaning imported data: Names, product titles and addresses exported in capital letters look harsh. Lowercase or sentence case makes them easier to read.
• Preparing text for matching: Lowercase text makes it easier to compare, sort and remove duplicates, because Apple and APPLE become the same word.
• Writing URLs and slugs: Many web servers treat the path of a URL as case sensitive, so mixing capitals can create duplicate versions of one page. Lowercase URLs are the safe choice for SEO.
• Formatting emails and tags: Email addresses, usernames and hashtags are usually written and compared in lowercase.
• Improving readability: Long blocks of capital letters are harder to read than normal text.

How to change uppercase to lowercase in Word, Excel and Google Docs

You can also change the case inside the program you already use:

• Microsoft Word: Select the text and use the Change Case button on the Home tab, or press Shift + F3 until the text is lowercase.
• Excel and Google Sheets: Use the LOWER function, for example =LOWER(A2), then copy the result. UPPER and PROPER work in the same way.
• Google Docs: Select the text, then choose Format, Text, Capitalization and pick lowercase.
• JavaScript: Call the toLowerCase method on a string.
• Python: Call the lower method on a string.

Uppercase, lowercase and sentence case

UPPERCASE makes every letter a capital, lowercase makes every letter small, and sentence case capitalizes only the first letter of each sentence. This tool covers the first two directly and offers sentence case through the capitalization option. If you also need Title Case, camelCase, snake_case or kebab-case, use the Case Converter, which supports many more styles.

Things to know before you convert

• Accented letters: Letters such as é, ü and ñ are converted correctly.
• Letters that change length: In uppercase, the German letter ß becomes SS, so the text can get slightly longer.
• Proper nouns and acronyms: Lowercase conversion also lowercases names, places and acronyms such as NASA. Use the sentence option or edit them afterwards.
• Scripts without case: Arabic, Urdu, Hindi, Chinese and Japanese have no uppercase and lowercase forms, so those letters stay unchanged.
• Turkish letters: This tool follows standard rules, so the capital I becomes i. In Turkish it should become a dotless i, so check Turkish text by hand.