Text Case Converter

文本大小写转换

Paste any text and convert it to UPPERCASE, lowercase, Title Case, or Sentence case.

粘贴文本并一键转换为全大写、全小写、标题或句首大写。

UPPERCASE — every letter is converted to its uppercase form using Unicode casing rules.
全大写 —— 使用 Unicode 大小写规则把所有字母转为大写。
lowercase — every letter is converted to its lowercase form.
全小写 —— 把所有字母转为小写。
Title Case — the first letter of every word is capitalized, with small words (a, an, the, of, in, on, etc.) left lowercase in English.
标题式 —— 每个单词首字母大写，英文中的虚词（a, an, the, of, in, on 等）保持小写。
Sentence case — only the first letter of each sentence is capitalized.
句首大写 —— 仅每句首字母大写。