将来価値計算機
Calculate how much your money will grow over time with compound interest and regular contributions. Get instant results with charts and scenarios.
あなたの詳細
Enter your starting amount, monthly contribution, interest rate, and time period. Click Calculate to see your future value, growth chart, and contribution scenarios.
将来価値
$0
合計貢献額
$0
利息の発生
$0
成長倍率
0x
拠出額と利息
成長のバランスをとる
毎月の貢献シナリオ
| 毎月 | 貢献しました | 将来価値 |
|---|
| 年 | 貢献しました | 興味 | バランス |
|---|
完全なユーザーガイド
What is Future Value?
Future value (FV) is the amount your money will grow to over time with compound interest. This calculator combines the growth of a starting lump sum and the future value of regular contributions (e.g. monthly). The more you invest and the longer the period, the larger your future value.
What Your Results Mean
将来価値
Total projected value at the end of the period: starting amount plus contributions plus interest earned.
成長倍率
How many times your total contributions have grown (e.g. 2x means your money doubled).
この計算機の使い方
- Enter your starting amount (present value)
- Enter monthly contribution (optional; use 0 for lump sum only)
- Enter expected annual interest rate and time period in years
- Click Calculate to see future value, charts, scenarios, and yearly breakdown
数式
FV of lump sum: FV = PV × (1 + r/n)^(n×t)
FV of regular payments (ordinary annuity): FV = PMT × [((1 + r/n)^(n×t) − 1) / (r/n)]
重要な注意事項
- This shows nominal future value. For real (inflation-adjusted) value, use a lower rate (e.g. subtract 2–3%% for inflation).
- For education only. Not financial or investment advice. Actual returns vary.
Tips
- Compound interest grows fastest over long periods; start early.
- Regular contributions often contribute more than the initial amount over decades.
- Use conservative return assumptions (e.g. 6–7%%) for long-term planning.