📈ファイナンス
複利計算機
Calculate compound interest with optional monthly contributions. Enter your principal, annual rate, investment period, and compounding frequency to see your final balance, total interest earned, and a year-by-year growth chart.
Final Balance
$37,405
Total Interest
$15,405
Total Contributions
$22,000
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How it works
This 複利計算機 runs entirely in your browser — no data is sent to any server. Simply fill in the fields above and the result updates instantly. You can copy the output with the copy button provided.
Frequently Asked Questions
複利とは？
利息にも利息がつく仕組みです。元本と過去の利息の合計に対して新たな利息が発生します。