What Is a Lowercase Converter?

Quick answer: A lowercase converter swaps every capital letter in your text for its small form, so PLEASE REPLY BEFORE FRIDAY comes out as please reply before friday. Use it when a paragraph was typed with Caps Lock stuck, pasted from a shouting email, or exported in block capitals.

Lowercase letters are the small forms of the alphabet, also called minuscules, and they make up most of what we read every day.

Lowering text by hand means deleting and retyping it. Here the whole box drops to small letters in one press, or only the words you select. You can keep real acronyms such as NASA and IBM in capitals, and the part of a web address after the domain is protected, because on many servers /Report.PDF and /report.pdf are different files. For lists, the email cleaner and the tag maker do the lowering, trimming, and de-duplicating in a single step.

• 1 Press to drop every capital
• 3 Tools: toolbar, emails, tags
• 100K Characters per conversion
• 6 Lowercase formats

For every other format, from Title Case to camelCase, open the case converter.

How Do You Change Uppercase to Lowercase?

1. Paste the capitals: An email, a document, or a list typed in caps.
2. Choose what to keep: Plain lowercase, or lowercase that spares acronyms.
3. Check the counter: It shows how many capitals are still in the box.
4. Copy the result: Or save the small letters as a .txt file.

How Do You Make Text Lowercase in Word, Excel and Code?

Where	Method
Microsoft Word	Home tab, Change Case (Aa), lowercase; or press Shift + F3 until the letters are small
Google Docs	Format, Text, Capitalization, lowercase
Excel and Google Sheets	=LOWER(A2)
SQL	LOWER(column_name)
JavaScript	text.toLowerCase()
Python	text.lower(), or text.casefold() for comparisons in any language
Phones	No built-in button on iPhone; on Gboard, select the text and tap Shift until it is small

Are Email Addresses and URLs Case-Sensitive?

The domain part never is: Example.COM and example.com reach the same place. For email, the part before the @ could in theory be case-sensitive, but virtually every mail provider treats it as case-insensitive, so storing addresses in lowercase is the safe way to avoid duplicates in a mailing list. Web addresses are different: the path after the domain is case-sensitive on many servers, which is why this converter leaves it alone by default. For your own site, use lowercase URLs from the start so links never break because of a capital.

Why Do Some People Write Everything in Lowercase?

All-lowercase writing has become a style of its own on social media, where it reads as relaxed, quiet, or ironic, the opposite of shouting in capitals. Some brands and artists use lowercase names on purpose, and poets have broken capitalization rules for a century. It works for captions, bios, and creative work. For formal documents, client emails, and anything official, keep a capital to open each sentence and for every name.

For tiny superscript-style letters rather than lowercase, try the small text generator.

Who Needs to Convert Caps to Lowercase?

• Office workers: fix replies and documents typed with Caps Lock on.
• Marketers: clean customer email lists before importing them.
• Developers: normalise usernames, keys and tags before comparing them.
• Creators: write relaxed no-caps captions and bios.
• Data analysts: make text columns consistent before matching records.
• File organisers: give folders and files tidy lowercase names.

Give lowercase bios a different look with the font generator.

Lowercase Terms to Know

Lowercase

Small letters; type for them was once kept in the lower case of a printer’s desk.

Minuscule

The formal name for a small letter.

Case-insensitive

Treating capitals and small letters as the same, as email providers do.

Case-sensitive

Treating A and a as different, as many web paths and passwords do.

Normalisation

Making data consistent, often by lowering text before it is stored.

casefold

A stronger lowercasing used to compare text in many languages.

Need the opposite? The uppercase converter turns small letters into capitals.

What Makes This Lowercase Tool Useful?

Whole or selection

Lowercase one line or everything.

Acronyms kept

NASA and IBM stay capitals.

Safe links

Case-sensitive paths untouched.

Email cleaner

Lowered, sorted, de-duplicated.

Tag maker

Hyphens, underscores, or hashtags.

Undo and redo

Nothing is lost by mistake.

Importing a contact list?

Lower, trim, and remove duplicate addresses before you upload them.

@ Open the Email Cleaner

Lowercase Result Not What You Expected?

What happened	Why	Fix
Part of a link kept its capitals	Link paths are protected	Untick the link option if you really want them lowered
An acronym became small	Plain lowercase lowers everything	Use lowercase, keep acronyms instead
Names lost their capitals	Lowercase cannot tell names from other words	Use Sentence case, then fix names by hand
An address was left out of the email list	It has no domain ending such as .com	Check the spelling shown in the warning

Tips for Working With Small Letters

Lower before you compare

Lowercase both lists first, and duplicates like Bob@ and bob@ disappear.

Keep passwords as they are

Passwords are case-sensitive; never lower them.

Name files in lowercase

It avoids broken links when files move between systems.

Restore sentence starts

For readable prose, follow lowercase with Sentence case.

To restore capitals at the start of each sentence, run the text through the sentence case converter.

Lowercase Converter FAQ

What is a lowercase converter?

A free tool that changes capital letters into small letters, so text written in caps becomes normal again.

How do I convert caps to lowercase?

Paste the capitals and press lowercase. Every letter in the box drops to its small form.

Can I keep acronyms in capitals?

Yes. Choose lowercase, keep acronyms, and short all-capital words such as NASA stay as they are.

How do I lowercase only one sentence?

Select that sentence in the box, then press lowercase; the rest of the text is not touched.

Why did part of my link stay in capitals?

The path after the domain can be case-sensitive, so it is protected unless you untick that option.

What is the Excel formula for lowercase?

=LOWER(A2) gives the contents of cell A2 in small letters.

How do I lowercase a string in JavaScript?

Use text.toLowerCase(), which returns a new string in lowercase.

How do I lowercase text in Python?

Use text.lower(), or text.casefold() when you need to compare words across languages.

Are email addresses case-sensitive?

Domains are not, and in practice providers ignore case before the @ as well, so lowercase lists are safe.

Are URLs case-sensitive?

The domain is not, but the path often is, so /Page and /page can be different addresses.

How do I clean a list of email addresses?

Paste it into the Email List Cleaner; it lowers, trims, removes duplicates, and flags invalid entries.

Can I turn titles into lowercase file names?

Yes. The Tag and File Name Maker joins words with hyphens, underscores, dots, or nothing.

How do I make lowercase hashtags?

Choose Hashtag in the Tag and File Name Maker to get one lowercase tag per line.

Is lowercase the same as small letters?

Yes. Lowercase, small letters, and minuscules all mean the same letter forms.

How do I undo the conversion?

Press Undo to step back, or back to UPPERCASE to raise all letters again.

Does it work with accented letters?

Yes. Letters such as É and Ü become é and ü.

Why do people write in all lowercase online?

It reads as relaxed or understated, and has become a popular style for captions and bios.

Is there a size limit?

Each conversion handles up to 100,000 characters.

Is this lowercase converter free?

Yes. Lowering text here costs nothing, and there is no cap on how many times you convert.

Is my text sent to a server?

No. All conversion runs in your own browser.

Does the lowercase converter work on mobile?

Yes. The page works with touch, and selection uses your phone’s text handles.

Bring It Down to Lowercase

AB → ab

Small letters for text, emails, tags, and file names. ab Convert to Lowercase