How to Convert Text to Lowercase Online
A lowercase converter changes every letter in your text to a small letter. It is essential for data normalization, URL formatting, email standardization, and code formatting.
How to Use the Free Lowercase Converter
- Open the FlipMyCase converter.
- Paste your text into the input box.
- Copy the lowercase output.
- Paste it wherever you need it.
Your text stays in your browser. Nothing is sent to a server.
When to Use Lowercase
- Email addresses: Normalize before storing in a database
- URL slugs:
my-blog-post-titlenotMy-Blog-Post-Title - CSS class names:
header-navnotHeader-Nav - Variable names: Preparing text for camelCase or snake_case
- Data cleaning: Standardizing survey responses, tags, and categories
- Usernames: Most platforms store usernames as lowercase
Lowercase in Programming
Most programming languages have a built-in method for lowercasing strings:
- JavaScript:
str.toLowerCase() - Python:
str.lower() - SQL:
LOWER(column_name) - PHP:
strtolower($str)
For quick one-off conversions without writing code, FlipMyCase handles it instantly.
Data Normalization with Lowercase
When working with datasets, mixed case causes problems. "New York", "new york", and "NEW YORK" are treated as three different values in most systems. Lowercasing all text values before comparison or storage eliminates these duplicates and makes your data consistent.
Lowercase and SEO
Google treats uppercase and lowercase URLs as potentially different pages. To avoid duplicate content issues, use lowercase URLs consistently and set up redirects from mixed-case variants. Most web frameworks handle this automatically, but it is worth checking your sitemap.