How to use
- Enter your starting principal balance and regular periodic deposit amount (monthly or annually).
- Set your annual interest rate percentage, investment term in years, and compounding frequency.
- Explore the interactive visual growth chart, compare total contributions versus earned interest, and export the yearly breakdown table to CSV.
FAQ
What is compound interest and compounding frequency?
Compound interest represents earning interest on both your initial principal and previously accumulated interest. More frequent compounding (e.g. monthly vs annually) generates slightly higher overall yields.
Does this formula support regular monthly deposits?
Yes, the calculator accurately models periodic monthly or annual additions, compounding the gains each month across your entire investment horizon.
Is my financial calculation data private?
Yes, 100%. All computations and chart renderings execute strictly inside your local web browser. No numbers or personal data are ever uploaded.