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.

Step-by-step: changing uppercase to lowercase

• Step 1: Add your text: Paste or type your text into the box. It can be a single word or a long document.
• Step 2: Choose the direction: Pick UPPERCASE to lowercase, or switch to lowercase to UPPERCASE at the top of the tool.
• Step 3: Decide about sentences: Turn on the sentence option if you want each sentence to start with a capital letter after the text is converted to lowercase.
• Step 4: Check the result: The converted text appears next to your original and updates as you type, so you can see the change straight away.
• Step 5: Copy or download: Click Copy result, or save the text as a file. You can also use the result as the new input if you want to change it again.

Tips for a clean conversion

• Lowercase first, then add sentence case: For text typed with caps lock on, convert everything to lowercase and then turn on the sentence option. The result reads like normal writing.
• Check names and acronyms: Converting to lowercase changes every letter, including names, places and acronyms. Look through the result and fix those by hand.
• Compare the counts: The word and character counts for the original and the result should match. If they do not, something was changed that you did not expect.
• Keep your original: Copy the original text somewhere safe before you replace it, in case you need the capital letters again.
• Check slugs and addresses: If you convert URLs, tags or email addresses, read them once after the change, because some systems treat capital letters differently.

Common problems and fixes

• Names and acronyms became lowercase: Lowercase conversion cannot know which words should keep a capital letter. Fix these words by hand, or use the Case Converter for a title case result.
• My Urdu, Arabic or Hindi text did not change: These scripts have no uppercase and lowercase letters, so there is nothing to convert. Only the Latin letters in the text change.
• A sentence does not start with a capital: Sentence capitalization works best on text with normal punctuation. For unusual text, review the result and fix a few letters by hand.
• The conversion is slow on a huge text: Very large texts depend on the speed of your device. Split the text into smaller parts and convert them one by one.

Other text tasks you may need

• More case styles: Use the Case Converter for title case, camelCase and other styles.
• Count words and characters: Use the Word Counter for a detailed count, including reading time.
• Write and format text: Use the Online Text Editor to write, format and download your text.
• Shorten a long text: Use the Text Summarizer to get the key points of a long article.

Convert your text now

Paste your text in the box above, choose a direction and copy the result in a second. It is free, has no limits and needs no signup.