# Everyday Planning Tools

> Use calculators and planning helpers for money, workload, studying, and daily decisions when a spreadsheet feels like overkill.

## Tools in this collection

- [薪资计算器](https://www.teafun.cyou/tools/salary/) — 即时换算薪资与时薪。计算年薪、月薪、周薪、日薪和时薪，支持自定义工时与休假天数。
- [小费计算器](https://www.teafun.cyou/tools/tip/) — 即时计算小费并分摊账单。可选择货币、加入可选服务费，并分享每人金额明细。
- [发票生成器](https://www.teafun.cyou/tools/invoice-generator/) — 快速创建可以直接发给客户的 invoice，带 logo、税率、line items，同时本地保留 draft，再下载干净 PDF。
- [净资产追踪器](https://www.teafun.cyou/tools/net-worth-tracker/) — 在本地追踪资产、负债与净资产，提供灵活账户字段、货币选择、历史快照与 CSV 导出。
- [GPA / 期末成绩计算器](https://www.teafun.cyou/tools/gpa/) — 计算期末考试还需要多少分、模拟不同评分制度下的 GPA，并在本地导出结果卡。
- [ADHD 任務排序器](https://www.teafun.cyou/tools/adhd-task-prioritiser/) — 貼上你嘅任務清單，答三條低負擔問題，立即只拎到一件最應該而家做嘅事。
- [阅读时间估算器](https://www.teafun.cyou/tools/reading-time/) — 即时估算阅读和演讲时间。粘贴任意文字，即可获取字数、字符数、阅读时间和演讲时间，支持中日韩文。
- [求職信產生器](https://www.teafun.cyou/tools/cover-letter-builder/) — 用三款模板快速整求職信，即時預覽，並可直接喺瀏覽器下載 PDF。
- [TDEE 熱量計算機](https://www.teafun.cyou/tools/tdee/) — 用 Mifflin-St Jeor 估每日所需熱量，比較 Harris-Benedict，並即時拎到可收藏嘅宏量營養建議。
- [平面图工具](https://www.teafun.cyou/tools/floor-plan/) — 用 2D 方式快速排房间、拖放家具、旋转选中项目，再导出干净 PNG；无需账号、没有 watermark。

## FAQ

### Who is this collection for?

It is for students, freelancers, households, and anyone who wants a quick browser-based tool to make a small planning or money decision.

### Why group these tools together?

They often appear in the same real-world flow: estimate the number, draft the output, then move to the next planning step without losing context.

### Do these tools save my numbers?

No. Each tool calculates locally in your browser and keeps nothing after you close the tab. Your salary, invoice details, grades, and net-worth figures are never uploaded or stored on a server.

### Are the results precise enough to rely on?

They are good for quick, informed decisions, and most tools show the assumptions behind the figure so you can adjust them. For tax filing, formal financial planning, or construction, treat the output as a starting estimate and confirm with the appropriate professional tool.