屏幕画面宽高比与分辨率缩放计算器
等比例缩放 • 16:9 / 21:9 / 4:3 工业标准显示比例精准换算
📐 屏幕画面宽高比计算器
计算比例:
16 : 9
📁 Drag & drop an image here to auto-detect dimensions (or click to upload)
🛡️ 100% 浏览器本地离线隐私保护
所有财务与换算计算全部在您本地浏览器 JavaScript 引擎中执行，绝不向任何云端服务器发送财务隐私数据。
⚡ 零网络延迟即时反馈
基于浏览器原生高性能浮点计算，输入数值瞬间呈现结果，无加载等待。
数学算法模型与常见问题
How is the simplified ratio determined?
Using the Euclidean Greatest Common Divisor (GCD) algorithm to find the lowest integer ratio.
Does changing W2 automatically update H2?
Yes, modifying width or height automatically computes the reciprocal dimension while maintaining geometry.
What are common video and monitor aspect ratios?
16:9 (1920x1080 Full HD, 3840x2160 4K UHD), 21:9 (Ultrawide), and 4:3 (Legacy).