複利計算機
リアルタイムの成長グラフでお金がどのように増えるかを確認できます。
返済スケジュール
| # | 支払い | 元金 | 利息 | 残高 |
|---|---|---|---|---|
最初の12件を表示中（全 ヶ月。
時間経過による成長
| 年 | 投資額 | 値 |
|---|---|---|
はじめに
Compound Interest Calculator — See how your money grows with a live growth chart. Enter Principal, Rate (%), Years, Compounds / year to get an instant, accurate result.
計算式
A = P(1 + r/n)^(n·t), where P is principal, r is the annual rate, n is compounds per year, and t is years.
ステップごとの説明
- Enter the Principal.
- Enter the Rate (%).
- Enter the Years.
- Enter the Compounds / year.
- Click Calculate to see your result instantly.
実例
Example: With Principal = 10000, Rate (%) = 8, Years = 10, Compounds / year = 12, the Compound Interest Calculator gives Final Amount: 22196.4023, Interest Earned: 12196.4023.
よくある質問
How does compounding frequency affect returns?
More frequent compounding (e.g. monthly vs. annually) yields slightly more interest for the same nominal rate.
What does the growth table show?
The invested amount vs. the projected value at the end of each year, so you can see how growth accelerates over time.
What inputs does the Compound Interest Calculator need?
You'll need to provide: Principal, Rate (%), Years, Compounds / year. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Compound Interest Calculator?
The Compound Interest Calculator applies the formula exactly as calculated — A = P(1 + r/n)^(n·t), where P is principal, r is the annual rate, n is compounds per year, and t is years. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Are these results guaranteed?
No. The Compound Interest Calculator gives an estimate based on the numbers you enter and standard financial formulas — actual rates, fees, taxes, and terms vary by lender, institution, and jurisdiction, and can change over time. This is not financial advice; consult a qualified financial professional for decisions specific to your situation.
Is the Compound Interest Calculator free to use?
Yes, the Compound Interest Calculator is completely free, requires no signup, and runs instantly in your browser.
複利計算機について
The Compound Interest Calculator uses a real, verifiable formula — A = P(1 + r/n)^(n·t), where P is principal, r is the annual rate, n is compounds per year, and t is years. — so results are accurate every time, not an approximation.