# Compound Interest Calculator

Compound interest allows your investments to grow geometrically over time. A small monthly deposit over a couple of decades will produce incredible results even with a conservative interest rate. This calculator, also often called an investment calculator, is for figuring the **future value of a periodic investment** (one that you repeatedly make at a given interval). You can also try our Lump Sum Future Value Calculator to find the affect of compound interest on a one time investment.

## What You Should Know

- Smart Investing
- The Value of Diversification
- More Money with Index Funds
- Options Trading
- Financial Advisors
- Investment Companies and Advisors
- Timing the Market

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