Annualized Compound Interest Calculation

There is a famous saying -- "The most powerful force in the Universe is compound interest". Some people claim that this quote is said by Albert Einstein when he was giving a speech to a private group. Some argue that they need more proof to confirm it. 

Anyway, it does not matter Einstein said it or not. It is a very powerful quote and a lot of people from Wall Street seem to agree with it . For example, Warren Buffett and Peter Lynch mention this quote multiple times in their speeches.

Basically, it is the snow ball effect. The number may be started out small but if you keep adding consistently to the principal, the number will be very huge over time. Let’s say if you started with $10,000 in year 2020. You can consistently make it grow 30% every year. In next 30 years, your $10,000 can be huge $26 million! This is just one example and if you want to calculate more, I created calculators. 

Initially, I created the calulator using python script. A simple lightweight calculator that the result will be showed in table. And I uploaded the source code at github and called Compound Interest Calculator. Also, here is the screen shot: 

Sometimes, I want to calculate it without using python so I created web version of it and called Annualized Compound Return Calculator .