VPS 剩余价值计算器（VPS Residual Value Calculator）是一个免费、隐私优先、纯前端的 Web 应用， 用于实时计算 VPS（Virtual Private Server，虚拟专用服务器）订阅的剩余货币价值。 用户输入续费价格、币种、付款周期、到期日期和交易日期后，应用按"日单价 × 剩余天数"自动换算成人民币（CNY）， 并显示原始币种的等值金额、剩余天数与剩余进度百分比，同时支持溢价与售价的双向联动。 主要特性：10 种货币（CNY、USD、EUR、GBP、JPY、KRW、AUD、HKD、CAD、SGD）； 自定义汇率或调用 Prebid currency file 实时汇率（12 小时本地缓存）； 6 种付款周期（月付/季付/半年付/年付/两年付/三年付）； 深色 / 浅色模式自动切换；一键生成 WebP 分享卡片图片（纯前端渲染，无需上传）； Markdown 结果一键复制；移动端 / 桌面端自适应；零追踪、零上传、零登录。
A free, privacy-first, fully client-side web application that calculates the residual monetary value of a Virtual Private Server (VPS) subscription in real time. Enter the renewal price, currency, billing cycle, due date, and trade date; the app computes the remaining value in CNY using a daily-price times days-remaining model, and also displays the original-currency equivalent, the number of days remaining, and a progress percentage. Supports 10 currencies (CNY, USD, EUR, GBP, JPY, KRW, AUD, HKD, CAD, SGD), custom or live exchange rates from the Prebid currency file, 6 billing cycles, dark / light mode, one-click share-card WebP image generation (rendered entirely in-browser, no upload), Markdown copy-to-clipboard, and bidirectional premium / sale-price quote fields.