複利計算機

Compound Interest Calculation Result

Total Revenue

$0 0% Growth

Final Amount

$0 0% Growth

Annual Compound Interest Breakdown

Records key data on annual investment growth.
Unlike the charts, this table provides precise figures, helping you track changes year by year and monitor your investment plan.

Year Principal Deposit Interest Final Amount

Annual Compound Growth Chart

Shows the overall growth of your investment over time.
Each point on the line represents your final amount for that year, making it easy to visualize the impact of compounding.

Annual Asset Structure Chart

The bar chart breaks down the annual growth into distinct components:
Principal, Regular Contributions, and Interest/Profit — clearly showing how compounding drives asset growth.

1. Select Your Calculation Goal

This tool helps you calculate initial investment, final amount, annualized return, investment term, or periodic contributions based on your goals — supporting more precise financial planning.

  • Initial Investment: Determine how much you should invest up front under certain conditions.
  • Final Amount: Estimate how your investment will grow over time.
  • Annualized Return: Calculate the return needed to achieve your goal.
  • Investment Duration: Find out how long it takes to reach your financial goal.
  • Regular Contribution: Figure out how much to invest monthly or annually.

2. Enter Your Parameters

Based on your selection, input the relevant known parameters including:

  • Initial Investment (Principal): The amount you plan to invest.
  • Investment Duration (Years): The length of time you intend to invest.
  • Annualized Return (%): Your expected annual return (e.g., 5%, 7%).
  • Compounding Frequency: Choose how often interest is compounded (monthly, quarterly, semiannually, annually).
  • Regular Contribution: Select the amount you plan to invest monthly or annually.

3. Get the Calculation Result

Results update automatically as you adjust your values, and provide detailed investment insights including:

  • Annual Compound Growth Chart: Visualize your wealth accumulation over time.
  • Annual Asset Structure Chart: Breakdown of your investment growth into principal, contributions, and profit.
  • Annual Breakdown Table: Shows yearly changes in principal, interest, contributions, and final amount.

4. Optimize Your Investment Strategy

Based on your results, adjust parameters to improve your plan.

  • Increase regular contributions to see their effect on total returns.
  • Extend the investment duration to see the long-term impact.
  • Adjust the return rate to simulate different strategies.

This calculator not only estimates returns but also helps optimize your investment strategy!

Introduction to Compound Interest Calculator

This calculator is simple and easy to use. Just input your principal, annual rate, investment duration, and compounding frequency to quickly estimate your future total amount. You can also simulate regular contributions and see the breakdown of principal vs. interest. Additionally, it allows reverse calculations to determine the time needed to reach your goal. With clear charts, you can visually understand how your money grows. A practical financial planning tool!

What Is Compound Interest?

Compound interest is a method of calculating interest that builds upon itself. Unlike simple interest, it calculates interest not only on the principal but also on accumulated interest, creating a snowball effect over time.

The impact of compounding increases with time and frequency. The more frequent the compounding (e.g., monthly or daily), the faster your money grows. The longer the investment period, the greater the accumulated effect. Over time, compound interest leads to exponential growth.

Even with a modest rate of return, long-term investing with compounding can result in significant wealth accumulation. This is why 'time is money' is especially true in financial planning.

Therefore, compound interest is one of the most powerful tools in investing. Starting early and staying consistent can help you unlock its full potential and steadily grow your wealth.

Compound Interest Formula

A = P × (1 + r)n

  • A:Future Value (Total with Interest)
  • P:Principal (Initial Amount)
  • r:Interest Rate per Period (in decimal, e.g., 5% = 0.05)
  • n:Number of Compounding Periods

Terms and Definitions

Term Definition
Initial Investment (Principal) The amount of money you initially invest. It serves as the foundation for compound growth and significantly affects future value.
Annualized Return (%) The annualized return is the percentage difference between investment earnings and cost. It's a key metric to assess profitability and compare investment options.
Investment Duration The period over which interest is calculated (e.g., yearly, monthly, or daily).
Compounding Frequency How often interest is calculated and added to the principal. Common frequencies include yearly, semiannually, quarterly, and monthly.
Final Amount The total amount your investment grows into over time, including both principal and accumulated interest.

Real-World Examples of Compound Growth

  • Long-Term Investing: Investing $1,000 annually at a 7% annual return will grow to $101,073 after 30 years — showcasing the power of consistency and compounding.
  • High Initial Investment: An initial investment of $50,000 with a 5% annual return will grow to $132,665 after 20 years.
  • Short-Term Compounding: Investing $10,000 with monthly compounding and a 6% annual return will grow to $13,489 in 5 years.