驻外薪资换汇计算器

专为驻外员工打造的薪资换汇与盈亏核算工具，实时官方汇率跟踪，精准测算 USD → EGP → CNY 汇差盈亏与最终到手收益。

Overseas Salary Currency Exchange Calculator is an essential financial productivity tool designed specifically for expatriates, cross-border professionals, and international remote teams. Key Features: 1. Live & Historical Official FX Rates: Automatically tracks daily official benchmark exchange rates for USD/EGP and USD/CNY via public open-source currency APIs. Supports historical rate retrospective for up to 45 company settlement days. 2. Dual Payroll Conversion (USD → EGP → CNY): Enter your base USD salary, select your company settlement date to calculate actual local EGP received, and calculate the exact CNY converted back with one-click full payout (Max All). 3. Real-Time Profit / Loss Audit: Compare your final received CNY against the payday benchmark value with instant visual badges (FX Gain, FX Loss, or Break-even). 4. Full Bilingual Support (English & Chinese): Instant one-click toggle between English and Chinese across all labels, dropdowns, and status badges. 5. Privacy & Offline Safe: All calculations and user inputs (salary, deal rates, language preference) are saved strictly inside your local browser storage. No user data is ever uploaded to any remote server. 6. Flexible View Modes: Instant popup under your extension toolbar, plus one-click expansion to a full-screen desktop tab.