This is a simplified model (fixed annual rate). Results are estimates and do not include taxes/fees/inflation.
| Year | Balance | Contributions | Interest |
|---|
Tip: to compare scenarios, change one input at a time and copy the summary.
Compound interest calculator — Estimate future value with a fixed annual rate and regular contributions (weekly/monthly/yearly). Shareable, browser-only MVP.
Example: Use this tool to sanity-check numbers quickly, then share the link if you need to discuss with others.
FAQ: (1) Does it upload my data? No—runs in your browser. (2) Can I share results? Yes—use the share link feature. (3) Is it authoritative? Treat it as a convenience, not professional advice.
複利計算器 — 用固定年化報酬率與定期投入（每週/每月/每年）估算期末金額、累計投入與成長。可分享連結、純前端。
範例：用這個工具快速試算與對照結果，需要討論時再把連結分享給對方。
FAQ： (1) 會上傳資料嗎？不會，計算在瀏覽器內完成。 (2) 能分享結果嗎？可以，用分享連結。 (3) 準確嗎？請把它當作便利工具，不是專業建議。