Uppercase Converter - Convert Text to ALL CAPS
What is an uppercase converter?
An uppercase converter changes every letter in your text to capital letters while keeping numbers and punctuation the same. It helps you fix lowercase headlines, create consistent labels, or prepare data for systems that require caps—all offline in your browser.
How to use the uppercase converter
- Paste text: Drop in sentences, tags, or file names.
- Convert: Click Uppercase to see the ALL CAPS output right away.
- Copy or download: Copy the result or save it as a text file.
Why use this tool?
- Consistent styling: Match headline or button styles fast.
- Data readiness: Prepare codes, IDs, or constants that must be uppercase.
- No retyping: Fix casing from pasted sources without manual edits.
Use case 1: Headline cleanup
Convert mixed-case titles to ALL CAPS for print-ready designs.
Use case 2: Labeling and packaging
Standardize product codes or box labels so scanners and teams see the same casing.
Use case 3: Config prep
Create uppercase environment variable names for deployment scripts.
Examples
Basic example
Input: update release notes
Output: UPDATE RELEASE NOTES
Advanced example
Input: File names with extensions
Output: Extensions stay the same while the names become uppercase.
Common errors
Locale-specific letters
Some languages have unique uppercase rules. If characters look off, check locale settings or adjust manually.
Styled small caps confusion
If text appears uppercase already, it may be small caps styling. Convert plain text to ensure true uppercase letters.
Tips and proven approaches
- Compare with the lowercase converter to pick the right style.
- For sentence starts only, use the sentence case converter.
- Strip HTML or emojis first with the remove formatting tool for clean results.
Related tools
- Switch to headline style with the title case converter.
- Prepare snake_case identifiers using the snake_case converter.
Privacy and security
All conversion happens in your browser. No text is uploaded or stored.