Compound Interest Calculator
Calculate how your investments grow over time with compound interest and regular contributions.
Investment Details
Enter your investment information
Investment Growth
Your investment projection
Enter investment details to see growth projection
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How to Use This Calculator
Step-by-step guide to get accurate results
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Compound Interest Calculator: Maximize Your Savings & Investments
Understanding how your money can grow over time is essential for smart financial planning. Our compound interest calculator online helps you easily calculate potential returns on savings, investments, and loans, giving you clear insights into your financial future.
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Why Use a Compound Interest Calculator?
Accelerated Growth
Compound interest allows your money to earn interest on both the principal and the accumulated interest over time, helping savings and investments grow faster compared to simple interest.
Clear Financial Insights
Instantly view your potential growth without needing to understand complex formulas.
Retirement & Savings Planning
Plan ahead with accurate forecasts for retirement or other long-term savings goals.
Flexible Comparisons
Compare different interest rates, compounding periods, and contribution strategies.
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How to Use This Calculator
Step 1
Enter the principal amount – the starting balance of your investment or loan.
Step 2
Set the interest rate – annual or monthly, depending on your plan.
Step 3
Choose the compounding frequency – daily, monthly, quarterly, or yearly.
Step 4
Add contributions – if applicable, enter monthly or annual deposits.
Step 5
View results – the calculator will display your total interest earned, final balance, and a growth chart.
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Examples & Scenarios
Fixed Deposit
Deposit $10,000 at 5% annual interest, compounded monthly. Your investment grows significantly over time.
Retirement Planning
Small monthly contributions accumulate into a substantial retirement fund over decades.
Student Savings
Even small regular deposits can grow, making it an ideal tool for students.
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Compound Interest Explained
Compound vs Simple Interest
Simple interest is calculated only on the principal, while compound interest grows on both the principal and accrued interest.
Compounding Frequency
Daily, monthly, or yearly compounding affects growth. More frequent compounding results in higher returns.
Step-by-Step
Identify principal, interest rate, and time period → choose compounding frequency → add contributions → view balance and interest.
Frequently Asked Questions
How to calculate compound interest with monthly deposits?
Enter your monthly contributions in the calculator, select monthly compounding, and it will show your total growth over time.
What is the difference between simple and compound interest?
Simple interest is calculated only on your principal, while compound interest is calculated on both principal and accrued interest, allowing faster growth.
How much will my investment grow with compound interest?
Use our online calculator to input your details and see projected growth over months or years.
Can I compare compound interest rates for banks?
Yes! You can simulate different rates and compounding periods to choose the most profitable option.
Does the interest rate affect compound interest growth?
Absolutely. Even a small change in the interest rate can significantly impact long-term growth.