iToolsPro

Case Converter

13 conversions - uppercase, lowercase, sentence case, camelCase, snake_case, kebab-case and more, one-click copy

Input text
Results
UPPER · lower · Camel · snake

One input, 13 cases

Type once and get 13 conversions - uppercase, lowercase, camel, snake, kebab and more - click any to copy.

100% local · pure in-browser

Features

13 conversions
Uppercase, lowercase, title, camel, pascal, snake, kebab, dot, constant, swap and more.
Smart splitting
Detects spaces, underscores, hyphens and camel boundaries for consistent results.
One-click copy
Click any conversion result to copy it to the clipboard.

Use cases

🧑‍💻 Code naming 🌐 API fields 🗄 DB columns 📝 Copywriting

大小写转换使用指南Case Converter Guide

了解 12 种大小写转换方式、分词规则与常见问题。The 12 case conversions, word-splitting rules, and answers to common questions.

支持的转换Supported Conversions

工具一次输出 12 种转换结果:大写、小写、首字母大写、标题大小写、驼峰命名(camelCase)、帕斯卡命名(PascalCase)、蛇形命名(snake_case)、大写蛇形(SCREAMING_SNAKE_CASE)、烤串命名(kebab-case)、点分命名(dot.case)、常量命名(CONSTANT-CASE)与大小写交换。

The tool outputs 12 conversions at once: UPPERCASE, lowercase, sentence case, Title Case, camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, dot.case, CONSTANT-CASE and swap case.

分词规则Word Splitting

自动识别空格、下划线、连字符、点号以及驼峰边界(如 fooBar → foo Bar、HTTPServer → HTTP Server),保证命名转换结果规范。

Spaces, underscores, hyphens, dots and camel boundaries are detected automatically (e.g. fooBar → foo Bar, HTTPServer → HTTP Server).

使用步骤How to Use

  1. 在左侧粘贴或输入文本。Paste or type text on the left.
  2. 右侧实时显示 12 种转换结果。See all 12 conversions update live on the right.
  3. 点击任意结果复制。Click any result to copy it.

常见问题FAQ

Q1. 支持中文吗?Q1. Does it support Chinese?

支持,中文字符原样保留,仅对英文单词进行大小写转换。Yes - Chinese characters are kept as-is while English words are converted.

Q2. 驼峰和蛇形如何互转?Q2. How do camelCase and snake_case convert?

工具会自动识别驼峰边界,把 fooBar 拆为 foo bar,再按下划线/连字符规则重排。Camel boundaries are split automatically, so fooBar becomes foo bar and is rebuilt with the target separator.

Q3. 内容会上传吗?Q3. Is my text uploaded?

不会,全部在浏览器本地完成。No - everything runs locally in your browser.