Compound Interest Calculator
Calculate your investment growth over time with monthly compounding interest. 100% private.
Growth Summary
How to Use the Compound Interest Calculator
- Enter your initial principal deposit or starting balance.
- Input the expected annual interest rate percentage.
- Select the compounding frequency (e.g., Annually, Semi-Annually, Monthly, or Daily).
- Specify the investment duration in years and optional recurring monthly contributions.
- Review your projected total balance, earned interest breakdown, and growth schedule.
What is a Compound Interest Calculator?
A Compound Interest Calculator is a financial planning tool that estimates how an initial investment or savings balance grows over time when interest compounds. Unlike simple interest, compound interest earns interest on both the initial principal and the accumulated interest from previous periods, significantly accelerating long-term wealth accumulation.
Frequently asked questions
What is the difference between simple and compound interest?
Simple interest is calculated solely on the principal amount, while compound interest accumulates on the principal plus any previously earned interest over time.
How does compounding frequency affect total returns?
The more frequently interest compounds (e.g., monthly vs. annually), the faster your money grows, resulting in a higher effective annual yield.
Are my financial calculations saved or tracked?
No, all compound interest calculations run privately inside your web browser. No personal or financial details are ever stored on a server.