Compound Interest Calculator - Future Value, Contributions & Growth Chart

Calculate future value with compounding interest, monthly contributions, and year-by-year growth

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注意: 下記のツールインターフェースは現時点で英語のみに対応しています。UI の翻訳は順次進めています。このツールを英語で見る →

Initial ($)Rate (% APR)YearsCompoundingMonthly add ($)

Final balance

$144,572.72

Total contributions

$58,000.00

Interest earned

$86,572.72

Year	Balance
1	$13,201.42
2	$16,634.27
3	$20,315.28
4	$24,262.39
5	$28,494.83
6	$33,033.24
7	$37,899.74
8	$43,118.03
9	$48,713.55
10	$54,713.58
11	$61,147.34
12	$68,046.20
13	$75,443.79
14	$83,376.14
15	$91,881.93
16	$101,002.60
17	$110,782.60
18	$121,269.60
19	$132,514.70
20	$144,572.72

A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) − 1) / (r/n)]

あくまで推定値です。 計算結果は入力値に基づく一般的な式から生成された、情報提供のみを目的とするものです。金融、税務、法律、医療、または専門的な助言ではなく、個々の状況、管轄、税金、手数料、健康状態を考慮していません。重要な数値は必ず有資格の専門家に確認してください。本ツールの利用により、以下に同意したものとみなされます: 利用規約と免責事項.

使い方

1
Enter initial amount
Your starting principal - the money you invest today.
2
Enter rate and term
Annual percentage rate (APR) and how many years the money will grow.
3
Pick compounding & contribution
Choose how often interest compounds (monthly, quarterly, etc.) and how much you plan to add each month.

Compound Interest Calculator - Future Value, Contributions & Growth Chart について

Free compound interest calculator. Enter your initial investment, annual interest rate, term in years, compounding frequency, and optional monthly contribution to instantly see the future value, total contributions, interest earned, and a year-by-year growth table. Perfect for planning savings, retirement, or investment growth. Runs entirely in your browser. 712 Tools の Compound Interest Calculator - Future Value, Contributions & Growth Chart はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。

デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。

よくある質問

What is the compound interest formula?

A = P(1 + r/n)^(nt) + PMT × [((1 + r/n)^(nt) − 1) ÷ (r/n)], where P is principal, r is annual rate, n is compounding periods per year, t is years, and PMT is the per-period contribution.

What is compounding frequency?

How often interest is added back to the balance. More frequent compounding (daily vs annual) produces slightly higher returns because interest earns interest sooner.

Does this account for inflation or taxes?

No - this is a nominal-return calculator. Real (inflation-adjusted) returns and after-tax returns are typically lower.

Is my data uploaded?

No. All calculations run entirely in your browser.

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