How it works
- Input. Paste your content or drop a supported file.
- Options. Adjust the options for the result you need.
- Process. Run the tool, then copy or download the result.
Compare and format
Uppercase
Convert text to uppercase.
TXT, CSV, TSV, JSON or MD · UTF-8 · up to 10 MiB. Each input, including files: up to 500,000 code points.
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Compare and format
How it works: Uppercase
Convert every letter to uppercase using language-aware browser rules while preserving numbers, punctuation and line breaks.
Input → Result
Input
a guide to CSV data
Result
A GUIDE TO CSV DATA
Common uses
- Standardize codes and labels
- Prepare headings
- Normalize values before comparison
Formats and limits
- The active page language controls case conversion. Numbers, punctuation and line breaks are preserved.
- Some letters expand or change differently by language. Check Turkish i/ı, German ß, names and acronyms.
2026-10-07