Case Converter
Free online case converter: UPPERCASE, lowercase and Title Case modes with line-by-line batch conversion — runs locally.
Privacy: all processing happens locally in your browser. Your input never leaves your device.
What is Case Converter?
Unifying the case of English text comes up constantly in code, copywriting and data cleaning. This tool offers three modes — UPPERCASE, lowercase and Title Case — converting multi-line text in batches, line by line. For naming-style conversions such as camelCase or snake_case, use the Camel/Snake converter instead.
How to Use
- Paste text (multiple lines supported)
- Choose the target case mode
- Copy the result
FAQ
- How does Title Case treat existing capitals?
- It uppercases the first letter of each word at word boundaries and leaves the rest of each word as-is.
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Last updated 2026-09-04