複利計算
貯蓄の増え方を確認
ブラウザで動作 · アップロード不要
このツールとページ内の説明は、現在は英語のみです。動作は同じで、すべてブラウザ内で実行されます。
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Money put in Interest earned
Year by year
| Year | Put in | Interest | Balance |
|---|
お使いのブラウザはこのツールを動かすには古すぎます。更新するか、最新の Chrome、Edge、Firefox、Safari をお使いください。
- 何も端末から出ません
- サーバーによるサイズ制限なし
- 登録不要・透かしなし
- 無料
How to use the compound interest calculator
- Enter a starting amount, what you add each month, the yearly rate and the number of years.
- Choose how often interest is compounded.
- Read the final balance and the year-by-year table, or download it.
How compounding works
Interest is added to the balance, and then it earns interest too. The formula for a single amount is A = P × (1 + r/n)^(n × t). With monthly additions, the calculator works month by month, using the monthly rate that matches your compounding.
よくある質問
Does it include inflation or taxes?
No. Results are before tax and in today's money terms. Use a lower rate to allow for inflation.
Is anything sent anywhere?
No. The calculation happens in your browser, and your numbers never leaves your device.