# 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

- [薪資計算器](https://www.teafun.cyou/tools/salary/) — 即時換算薪資與時薪。計算年薪、月薪、週薪、日薪和時薪，支援自訂工時與休假天數。
- [小費計算器](https://www.teafun.cyou/tools/tip/) — 即時計算小費並分攤帳單。可選擇貨幣、加入選填的服務費，並分享每人金額明細。
- [發票產生器](https://www.teafun.cyou/tools/invoice-generator/) — 快速建立可直接寄給客戶的發票，加入 Logo、稅率與項目明細，在本地保留草稿，並下載乾淨的 PDF。
- [淨資產追蹤器](https://www.teafun.cyou/tools/net-worth-tracker/) — 在本地追蹤資產、負債與淨資產，提供彈性的帳戶欄位、貨幣選擇、歷史快照與 CSV 匯出。
- [GPA / 期末成績計算器](https://www.teafun.cyou/tools/gpa/) — 計算期末考還需要幾分、模擬不同評分制度下的 GPA，並在本地匯出結果卡。
- [ADHD 任務排序器](https://www.teafun.cyou/tools/adhd-task-prioritiser/) — 貼上您的任務清單，回答三個低負擔問題，立即得到一件現在最該做的事。
- [閱讀時間估算器](https://www.teafun.cyou/tools/reading-time/) — 即時估算閱讀和演講時間。貼上任意文字，即可取得字數、字元數、閱讀時間和演講時間，支援中日韓文。
- [求職信產生器](https://www.teafun.cyou/tools/cover-letter-builder/) — 用三款模板快速建立求職信，即時預覽，並可直接在瀏覽器中下載 PDF。
- [TDEE 熱量計算機](https://www.teafun.cyou/tools/tdee/) — 以 Mifflin-St Jeor 估算每日所需熱量、比較 Harris-Benedict，並立即取得可加入書籤保存的宏量營養建議。
- [平面配置工具](https://www.teafun.cyou/tools/floor-plan/) — 以 2D 方式快速規劃房間、拖放家具、旋轉選取項目，再匯出乾淨的 PNG；不需要帳號，也沒有浮水印。

## 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.