Interest Lab
Growth Logic Comparison
Did you know? Einstein reportedly called Compound Interest the "8th Wonder of the World." This tool shows you why.
Extra earned vs. simple interest
About the Simple vs Compound Interest Calculator
The Simple vs Compound Interest Calculator helps you compare how interest is calculated and how it affects your savings or investments over time. It clearly shows the difference between earning interest only on your principal versus earning interest on both your principal and accumulated interest.
Simple interest is calculated only on the original amount invested or borrowed, while compound interest grows exponentially by adding interest on top of interest. This tool demonstrates why compound interest is often referred to as “interest on interest.”
Whether you are saving money, investing for the long term, or comparing loan options, this calculator provides a clear and visual way to understand how compounding frequency and time impact financial growth.
What this calculator helps you with
- Compare simple interest vs compound interest returns
- Understand the long-term impact of compounding
- Estimate future value of savings or investments
- Visualize interest growth over time
- Make smarter saving and investment decisions
This calculator is for educational and planning purposes only. Actual investment returns may vary based on market conditions and fees.
Quick Guide
- 1. Enter your base values in the fields above.
- 2. Adjust interest rates or terms to see live changes.
- 3. Review the charts to visualize your growth.
Results are estimates based on standard financial algorithms.
Common Questions
Everything you need to know about this calculator and the math behind it.
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