Compound Interest Calculator
Calculate compound interest growth and total accumulated portfolio value.
compound interest-calculator Inputs
About Compound Interest Calculator
The Compound Interest Calculator computes future investment growth, total compound interest earned, annual percentage yield (APY), and visual month-by-month amortization schedules with customizable compounding frequencies (Daily, Monthly, Quarterly, Annually) and periodic deposits.
How to Use Compound Interest Calculator
Step 1
Enter your initial principal investment amount.
Step 2
Specify the annual interest rate percentage (APR) and investment tenure in years.
Step 3
Enter optional recurring monthly contribution deposits.
Step 4
Select compounding frequency and review the total accumulated wealth.
Practical Use Cases for Compound Interest Calculator
Long-Term Wealth & Retirement Planning
Project 401(k), Roth IRA, index fund, and stock portfolio growth over 10 to 40 years with regular monthly contributions.
Savings Account & Fixed Deposit Yields
Calculate exact interest payouts for high-yield savings accounts (HYSA) and certificate of deposit (CD) investments.
Input & Output Examples
Calculating 10-Year Growth on $10,000 at 8% Compounded Annually
Principal: $10,000, Annual Rate: 8%, Time: 10 Years, Monthly Contribution: $200
Total Future Value: $58,359.83 | Total Interest Earned: $24,359.83 | Total Principal Invested: $34,000.00
Key Features & Performance
- ✓Configurable compounding frequencies: Daily, Monthly, Quarterly, Semi-Annually, Annually.
- ✓Supports regular monthly or annual recurring contribution deposits.
- ✓Inflation-adjusted purchasing power estimate toggle.
- ✓Year-by-Year breakdown table showing Principal vs Interest balance.
- ✓100% Client-Side calculation with zero financial data transmission.
- ✓1-Click Copy formatted financial summary.
Key Terminology & Definitions
Compound Interest
Interest calculated on the initial principal and also on the accumulated interest of previous periods ("interest on interest"). Formula: A = P(1 + r/n)^(nt).
Annual Percentage Yield (APY)
The real annual rate of return earned on an investment, taking into account the effect of compounding frequency.