Free online Unicode code point search and lookup - Character categories/code point conversion
Unicode码点是Unicode标准为每个字符分配的唯一编号,通常用U+加十六进制数表示。例如"中"的码点是U+4E2D,"A"的码点是U+0041。Unicode目前定义了超过14万个字符,覆盖世界上几乎所有书写系统。
Unicode是字符集标准,定义了字符与码点的映射。UTF-8是Unicode的编码方式之一,用1-4个字节表示一个码点。ASCII字符(U+0000-U+007F)在UTF-8中只需1字节,中文通常3字节,表情符号4字节。
Windows:按住Alt+数字小键盘输入十进制码点。Mac:Ctrl+Cmd+Space打开表情选择器,或使用Unicode Hex Input输入法。HTML:使用加十六进制码点;如中显示"中"。本工具可直接搜索并复制任何Unicode字符。
No. Unicode Character Lookup uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
Yes, Unicode Character Lookup is completely free to use. No registration or login required — all features are available immediately.
No. Unicode Character Lookup is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.
Unicode Character Lookup has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.
Yes. Unicode Character Lookup is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.