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文字ケース変換

Text case converter: convert between 11 cases like upper, lower, title and camel with character count for writing and coding, with one-click copy and offline.

使い方

テキストを貼り付けるか入力し、目的の形式を選ぶと、結果と文字数がリアルタイムに更新されます。「コピー」をクリックするだけで利用できます。

Overview

Text Case Converter is a Language tool. Convert between 11 cases like upper, lower, title and camel with character count for writing and coding, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of Text Case Converter: Paste or type text, choose a target case, and the result and character count update instantly. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use Text Case Converter offline or on poor network — all calculations stay local and private.
  • Batch process CSV columns
  • Clean duplicates and whitespace

How to use

  1. 1 Paste or type text, choose a target case, and the result and character count update instantly..
  2. 2 Choose cleaning actions (dedupe, trim, case)
  3. 3 Preview diff with line numbers
  4. 4 Copy or download

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Split very long texts
  • Dedupe is case-sensitive by default
  • Word vs char counts differ

FAQ

Regex supported?
Yes in find/replace tools.
Preserve formatting?
Line breaks preserved by default.
How is Text Case Converter different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “case converter, snake_case” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
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