About CalcCompoundInterest.com
Simple calculators and real-world examples to help you understand compound growth — before you invest.
What this site is
CalcCompoundInterest.com is a set of fast, simple calculators and practical articles that help you understand how saving and investing can grow over time. The goal is clarity: plug in your numbers, compare scenarios, and make better long-term decisions.
What you can do here
- Estimate how regular contributions compound over time.
- Model retirement targets using different assumptions.
- Compare ETF-style investing vs a savings account.
- Explore “what if” examples in the Articles section.
Who makes it
Hi — I’m Peter. I built this site to make the maths behind compounding easy to use and easy to explain. I’m not a financial adviser. Everything here is educational and uses simplified assumptions so you can explore scenarios quickly.
If you spot an error, want a new calculator, or have a topic suggestion, I’d love to hear from you.
Important note
This website provides general information only and does not consider your personal situation. Always do your own research and consider professional advice before making financial decisions.