Calculator

Calculator is a clean, fast calculator that lives in your browser toolbar. Run everyday arithmetic or switch to Scientific Mode for trigonometry, logarithms, and roots — no app to install. Key features: - Scientific Mode: sin, cos, tan, log, ln, sqrt, x², and π - Unit Converter for length, weight, and temperature, with localized unit names - Calculation history so you can review and reuse previous results - Built-in Scratchpad for jotting notes or rough calculations - Keyboard input support - Available in 11 UI languages - Clean light theme Everything runs locally and works fully offline. No account is needed and your calculations never leave your device. =============== Calculator 是一款简洁快速的浏览器工具栏计算器。既可进行日常四则运算，也可切换到科学模式完成三角函数、对数和开方运算 — 无需安装额外应用。 主要功能： - 科学模式：sin、cos、tan、log、ln、sqrt、x²、π - 单位换算：长度、重量、温度，并提供本地化的单位名称 - 计算历史：随时查看并复用此前的结果 - 内置草稿纸：记录笔记或临时计算 - 支持键盘输入 - 提供 11 种界面语言 - 简洁浅色主题 所有运算均在本地完成，可完全离线使用。无需注册账号，计算内容绝不离开你的设备。