VPS 剩余价值计算器 | VPS Remaining Value Calculator

中文 | English

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中文

一个精致的 VPS 剩余价值计算器，支持实时汇率转换、多币种显示和中英双语切换。

在线体验: https://vps.ohminicat.com/

功能特性

• 实时汇率 - 集成 ExchangeRate-API，自动获取最新汇率，每小时更新
• 9 种货币 - 支持 USD、EUR、GBP、CNY、JPY、HKD、SGD、AUD、CAD
• 多币种对比 - 计算结果自动转换为其他 8 种货币，方便横向对比
• 中英双语 - 界面支持中文/English 一键切换，偏好自动保存
• 截图分享 - 支持一键复制截图到剪贴板或下载为图片
• 偏好记忆 - 自动保存货币选择、到期日期等偏好到本地
• 计算公式 - 完整展示计算过程，结果透明可验证
• 响应式设计 - 适配桌面、平板和手机
• Docker 部署 - 开箱即用的容器化部署方案

快速开始

Docker 部署（推荐）

预构建的多平台镜像（amd64/arm64）托管在 GitHub Container Registry，每次推送到 main 分支时通过 GitHub Actions 自动构建。

git clone https://github.com/jx453331958/vps-calculator.git
cd vps-calculator
./deploy.sh deploy

或者不克隆仓库，直接使用 Docker：

docker pull ghcr.io/jx453331958/vps-calculator:latest

docker run -d \
  --name vps-calculator \
  -p 3457:3457 \
  ghcr.io/jx453331958/vps-calculator:latest

可用的镜像标签：

• latest — main 分支最新构建
• <commit-sha> — 指定提交（如 ghcr.io/jx453331958/vps-calculator:abc1234）
• <version> — 语义化版本号（如 ghcr.io/jx453331958/vps-calculator:1.0.0）

部署脚本

./deploy.sh deploy   # 首次部署
./deploy.sh update   # 拉取最新镜像并重启
./deploy.sh start    # 启动服务
./deploy.sh stop     # 停止服务
./deploy.sh restart  # 重启服务
./deploy.sh status   # 查看状态
./deploy.sh logs     # 查看日志
./deploy.sh clean    # 删除容器和镜像

手动运行

npm install
npm start

访问 http://localhost:3457

使用说明

1. 输入 VPS 信息

   • 购买金额和货币类型
   • 付款周期（月付 / 季付 / 半年付 / 年付）
   • 到期时间

2. 点击计算 - 或按 Enter 键快速计算

3. 查看结果

   • 每日成本、剩余价值、剩余天数
   • 其他币种等值金额
   • 完整计算公式

技术栈

层级	技术
前端	HTML5 + Tailwind CSS + Vanilla JavaScript
后端	Node.js + Express
汇率	ExchangeRate-API（免费）
日期	Flatpickr
截图	modern-screenshot
部署	Docker + Docker Compose

API

端点	说明
GET /	主页面
GET /api/rates	获取汇率数据（缓存 1 小时）
GET /health	健康检查

环境变量

变量	默认值	说明
PORT	3457	服务端口
NODE_ENV	development	运行环境

License

MIT

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English

A sleek VPS remaining value calculator with real-time exchange rates, multi-currency display, and bilingual support.

Live Demo: https://vps.ohminicat.com/

Features

• Real-time Exchange Rates - Powered by ExchangeRate-API, auto-refreshed hourly
• 9 Currencies - USD, EUR, GBP, CNY, JPY, HKD, SGD, AUD, CAD
• Multi-currency Comparison - Results automatically converted to all other currencies
• Bilingual UI - Toggle between Chinese and English with one click
• Screenshot & Share - Copy results to clipboard or download as image
• Preference Persistence - Currency selection and expiry date saved locally
• Formula Display - Transparent calculation process with full formula breakdown
• Responsive Design - Works on desktop, tablet, and mobile
• Docker Ready - One-command deployment with Docker Compose

Quick Start

Docker Deployment (Recommended)

Pre-built multi-platform images (amd64/arm64) are available on GitHub Container Registry, automatically built via GitHub Actions on every push to main.

git clone https://github.com/jx453331958/vps-calculator.git
cd vps-calculator
./deploy.sh deploy

Or use Docker directly without cloning:

docker pull ghcr.io/jx453331958/vps-calculator:latest

docker run -d \
  --name vps-calculator \
  -p 3457:3457 \
  ghcr.io/jx453331958/vps-calculator:latest

Available image tags:

• latest — latest build from main branch
• <commit-sha> — specific commit (e.g. ghcr.io/jx453331958/vps-calculator:abc1234)
• <version> — semantic version when tagged (e.g. ghcr.io/jx453331958/vps-calculator:1.0.0)

Deploy Script

./deploy.sh deploy   # First-time deployment
./deploy.sh update   # Pull latest image and restart
./deploy.sh start    # Start the service
./deploy.sh stop     # Stop the service
./deploy.sh restart  # Restart the service
./deploy.sh status   # Show status
./deploy.sh logs     # View logs
./deploy.sh clean    # Remove containers and images

Manual

npm install
npm start

Visit http://localhost:3457

Usage

1. Enter VPS Info

   • Purchase price and currency
   • Payment cycle (monthly / quarterly / semi-annual / annual)
   • Expiry date

2. Calculate - Click the button or press Enter

3. View Results

   • Daily cost, remaining value, remaining days
   • Equivalent amounts in other currencies
   • Full calculation formula

Tech Stack

Layer	Technology
Frontend	HTML5 + Tailwind CSS + Vanilla JavaScript
Backend	Node.js + Express
Rates	ExchangeRate-API (free)
Date Picker	Flatpickr
Screenshot	modern-screenshot
Deployment	Docker + Docker Compose

API

Endpoint	Description
GET /	Main page
GET /api/rates	Exchange rates (cached 1 hour)
GET /health	Health check

Environment Variables

Variable	Default	Description
PORT	3457	Server port
NODE_ENV	development	Runtime environment

License

MIT