Will it change punctuation or numbers?

No — only alphabetic letters are lowercased. Numbers, punctuation, and symbols stay the same.

Can I use this to fix ALL-CAPS emails?

Yes — paste the text in, click convert, and you'll get a properly lowercase version in one step.

What's the difference between lowercase and sentence case?

Lowercase makes every letter small. Sentence case lowercases everything but capitalizes the first letter of each sentence.

Lowercase Converter

Instantly convert any text to lowercase.

By Mike Starr·Last reviewed: August 2026

About Lowercase Converter

The Lowercase Converter changes every letter in your text to lowercase instantly. This is handy for normalizing data, cleaning up ALL-CAPS text that was accidentally typed, formatting URLs, usernames, and email addresses, or preparing text for further processing.

How to Use This Tool

1Paste or type your text into the input area.
2Click 'Convert to lowercase'.
3The result appears instantly in the output area.
4Copy the result to your clipboard with one click.

Benefits of This Tool

Instantly fixes accidentally capitalized text

Useful for normalizing user-submitted data

Helps format URLs, usernames, and emails

Works on any length of text

Frequently Asked Questions

Glossary

Lowercase

Text written entirely in small letters.

URL Slug

The human-readable part of a URL that identifies a specific page.

Related Tools

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Sentence Case Converter

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Case Converter

Convert text between UPPER, lower, Title, camelCase, and more.